File: configure.in [Ruby 2.4.9]

dnl Process this file with autoconf to produce a configure script. AC_INIT() { AC_CONFIG_AUX_DIR(tool)

AC_PREREQ(2.67)

[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]), [$1]), [-1],
        AC_MSG_ERROR([Autoconf version ]$1[ or higher is required]$2))])

AC_DISABLE_OPTION_CHECKING

AC_ARG_VAR(, [additional CFLAGS]) AC_ARG_VAR(, [additional CPPFLAGS]) AC_ARG_VAR(, [additional CXXFLAGS])

AC_DEFUN(, [ m4_if(m4_version_compare(m4_defn(), [2.70]), [-1], [ # suppress error messages, rm: cannot remove 'conftest.dSYM', from # AC_EGREP_CPP with CFLAGS=-g on Darwin. # # TODO: remove this hack when AC_PREREQ() becomes 2.70 or later. AS_CASE(, [darwin*], [ rm() {

rm_recursive=''
for arg do
    AS_CASE("$arg",
            [--*], [],
            [-*r*], [break],
            [conftest.*], [if test -d "$arg"; then rm_recursive=-r; break; fi],
            [])
done
command rm $rm_recursive "[$]@"

} ])])])

{ # environment section

AC_ARG_WITH(baseruby,

AS_HELP_STRING([--with-baseruby=RUBY], [use RUBY as baseruby; RUBY is the pathname of ruby]),
[
        AS_CASE(["$withval"],[*ruby*],[BASERUBY=$withval],[AC_MSG_ERROR(need ruby)])
],
[
        AC_PATH_PROG([BASERUBY], [ruby], [false])
])

if test “`RUBYOPT=- $BASERUBY -e 'print 42' 2>/dev/null`” = 42; then

if test "`RUBYOPT=- $BASERUBY --disable=gems -e 'print 42' 2>/dev/null`" = 42; then
    BASERUBY="$BASERUBY --disable=gems"
fi
$BASERUBY -C "$srcdir/tool" downloader.rb -e gnu config.guess config.sub
HAVE_BASERUBY=yes

else

BASERUBY="echo executable host ruby is required.  use --with-baseruby option.; false"
HAVE_BASERUBY=no

fi AC_SUBST(BASERUBY) AC_SUBST(HAVE_BASERUBY)

AC_DEFUN(, [AS_CASE(, [cygwin*], [ AC_CACHE_CHECK(for mingw32 environment, rb_cv_mingw32, [AC_TRY_CPP([ ifndef MINGW32 # error endif ], rb_cv_mingw32=yes,rb_cv_mingw32=no) rm -f conftest*]) if test “$rb_cv_mingw32” = yes; then

target_os="mingw32"
: ${ac_tool_prefix:="`expr "$CC" : ['\(.*-\)g\?cc[^/]*$']`"}

fi ]) AS_CASE(, [mingw*msvc], [ target_os=“`echo ${target_os} | sed 's/msvc$//'`” ]) AS_CASE(, [x86_64-mingw*], [ target_cpu=x64 ]) ])

AC_DEFUN(, [

AS_CASE(["${host_os}"],

[nacl], [

ac_cv_exeext=.nexe
host_vendor=chromium
ac_cv_host=chromium
AC_MSG_CHECKING([wheather \$NACL_SDK_ROOT is set])
if test x"${NACL_SDK_ROOT}" = x; then
  AC_MSG_RESULT([no])
  AC_MSG_ERROR([You need to set \$NACL_SDK_ROOT environment variable to build for NativeClient])
fi
AC_MSG_RESULT([yes])

nacl_cv_build_variant=glibc
AC_ARG_WITH(newlib,
            AS_HELP_STRING([--with-newlib], [uses newlib version of NativeClient SDK]),
            [AS_CASE([$withval],
                     [no], [nacl_cv_build_variant=glibc],
                     [yes], [nacl_cv_build_variant=newlib])])

AS_CASE(["$target_cpu"],
        [x86_64], [nacl_cv_cpu_nick=x86
                   nacl_cv_cpu_nick2=x86_64],
        [i?86], [nacl_cv_cpu_nick=x86
                 nacl_cv_cpu_nick2=x86_32],
        [le32], [nacl_cv_cpu_nick=pnacl
                 nacl_cv_cpu_nick2=pnacl
                 ac_cv_exeext=.pexe],
        [nacl_cv_cpu_nick=$target_cpu])
AS_CASE(["$build_os"],
        [linux*], [nacl_cv_os_nick=linux],
        [darwin*], [nacl_cv_os_nick=mac],
        [cygwin*|mingw*], [nacl_cv_os_nick=win],
        [nacl_cv_os_nick=$build_os])

host="$host_cpu-chromium-$host_os-"
ac_tool_prefix="$host_cpu-nacl-"

AC_MSG_CHECKING([NativeClient toolchain])
if test x"$nacl_cv_cpu_nick" = xpnacl; then
  NACL_TOOLCHAIN="${nacl_cv_os_nick}_pnacl"
  ac_tool_prefix=pnacl-
elif test -d \
  "${NACL_SDK_ROOT}/toolchain/${nacl_cv_os_nick}_${nacl_cv_cpu_nick}_${nacl_cv_build_variant}"; then
  NACL_TOOLCHAIN="${nacl_cv_os_nick}_${nacl_cv_cpu_nick}_${nacl_cv_build_variant}"
elif test -d \
  "${NACL_SDK_ROOT}/toolchain/${nacl_cv_os_nick}_x86_${nacl_cv_cpu_nick}/${nacl_cv_build_variant}"; then
  NACL_TOOLCHAIN="${nacl_cv_os_nick}_x86_${nacl_cv_cpu_nick}/${nacl_cv_build_variant}"
else
  AS_CASE(
    ["${nacl_cv_build_variant}"],
    [glibc], [if test \
      -d "${NACL_SDK_ROOT}/toolchain/${nacl_cv_os_nick}_${nacl_cv_cpu_nick}_newlib" \
      -a -d "${NACL_SDK_ROOT}/toolchain/${nacl_cv_os_nick}_${nacl_cv_cpu_nick}"; then
      NACL_TOOLCHAIN="${nacl_cv_os_nick}_${nacl_cv_cpu_nick}"
    fi],
    [newlib], [ NACL_TOOLCHAIN="${nacl_cv_os_nick}_${nacl_cv_cpu_nick}" ])
fi
if test ! -e "${NACL_SDK_ROOT}/toolchain/${NACL_TOOLCHAIN}/${ac_tool_prefix}gcc"; then
  if test "${build_cpu}" = i686 -a -e "${NACL_SDK_ROOT}/toolchain/${NACL_TOOLCHAIN}/nacl-gcc"; then
    ac_tool_prefix=nacl-
  fi
  if test "${build_cpu}" = x86_64 -a -e "${NACL_SDK_ROOT}/toolchain/${NACL_TOOLCHAIN}/nacl-gcc"; then
    ac_tool_prefix=nacl64-
  fi
fi
if test -z "${NACL_TOOLCHAIN}"; then
  AC_MSG_ERROR([Unrecognized --host and --build combination or NaCl SDK is not installed])
fi
AC_MSG_RESULT(${NACL_TOOLCHAIN})

AC_MSG_CHECKING([path to SDK])
if ! echo -- "${PATH}" | grep -F "${NACL_SDK_ROOT}/toolchain/${NACL_TOOLCHAIN}/bin" > /dev/null; then
  PATH="${PATH}:${NACL_SDK_ROOT}/toolchain/${NACL_TOOLCHAIN}/bin"
fi
AC_MSG_RESULT(${NACL_SDK_ROOT}/toolchain/${NACL_TOOLCHAIN}/bin)

RUBY_APPEND_OPTIONS(XCFLAGS, '-I$(NACL_SDK_ROOT)/include')
if test x"${nacl_cv_cpu_nick}" = xpnacl; then
  RUBY_APPEND_OPTIONS(XCFLAGS, '-isystem $(NACL_SDK_ROOT)/include/pnacl')
elif test x"${nacl_cv_build_variant}" = xnewlib; then
  RUBY_APPEND_OPTIONS(XCFLAGS, '-isystem $(NACL_SDK_ROOT)/include/newlib')
fi

AC_MSG_CHECKING([nacl library path])
if test -d "${NACL_SDK_ROOT}/lib/${nacl_cv_build_variant}_${nacl_cv_cpu_nick2}/Release"; then
  nacl_cv_libpath="${nacl_cv_build_variant}_${nacl_cv_cpu_nick2}"
elif test -d "${NACL_SDK_ROOT}/lib/${nacl_cv_cpu_nick2}/Release"; then
  nacl_cv_libpath="${nacl_cv_cpu_nick2}"
else
  AC_MSG_ERROR([not found])
fi
AC_MSG_RESULT([${nacl_cv_libpath}])
RUBY_APPEND_OPTIONS(XLDFLAGS, '-L$(NACL_SDK_ROOT)/'"lib/${nacl_cv_libpath}/Release")

AC_SUBST(NACL_TOOLCHAIN)
AC_SUBST(NACL_SDK_ROOT)
AC_SUBST(NACL_SDK_VARIANT, "${nacl_cv_build_variant}")
AC_SUBST(NACL_LIB_PATH, "${nacl_cv_libpath}")
AC_CHECK_TOOLS(CC, [clang gcc])
AC_CHECK_TOOLS(CXX, [clang++ g++])

])])

AC_DEFUN(, [AS_CASE(, [nacl], [

AC_CHECK_TYPES([struct PPB_Core, struct PPB_Messaging, struct PPB_Var,
             struct PPB_URLLoader, struct PPB_URLRequestInfo,
             struct PPB_URLResponseInfo, struct PPB_FileRef,
             struct PPP_Instance])

]) ])

AC_DEFUN(, [AC_CACHE_CHECK(whether ${CPP} accepts -o, rb_cv_cppoutfile, [save_CPPFLAGS=“$CPPFLAGS” CPPFLAGS='-o conftest-1.i' rb_cv_cppoutfile=no AC_TRY_CPP(,

[grep test-for-cppout conftest-1.i > /dev/null && rb_cv_cppoutfile=yes])

CPPFLAGS=“$save_CPPFLAGS” rm -f conftest*]) if test “$rb_cv_cppoutfile” = yes; then

CPPOUTFILE='-o conftest.i'

elif test “$rb_cv_cppoutfile” = no; then

CPPOUTFILE='> conftest.i'

elif test -n “$rb_cv_cppoutfile”; then

CPPOUTFILE="$rb_cv_cppoutfile"

fi AC_SUBST(CPPOUTFILE)])

AC_DEFUN(, [AC_CACHE_CHECK(whether the linker is GNU ld, rb_cv_prog_gnu_ld, [if `$CC $CFLAGS $CPPFLAGS $LDFLAGS –print-prog-name=ld 2>&1` -v 2>&1 | grep “GNU ld” > /dev/null; then

rb_cv_prog_gnu_ld=yes

else

rb_cv_prog_gnu_ld=no

fi ]) GNU_LD=$rb_cv_prog_gnu_ld AC_SUBST(GNU_LD)])

eval `sed -n ['s/^@%:@define RUBY_API_VERSION_([A-Z_0-9]*) ([0-9]*)/API_1=2/p'] $srcdir/include/ruby/version.h` RUBY_PROGRAM_VERSION=`sed -n 's/^@%:@define RUBY_VERSION “(.*)”/1/p' $srcdir/version.h` MAJOR=`echo $RUBY_PROGRAM_VERSION | cut -d. -f1` MINOR=`echo $RUBY_PROGRAM_VERSION | cut -d. -f2` TEENY=`echo $RUBY_PROGRAM_VERSION | cut -d. -f3` for v in MAJOR MINOR TEENY; do

if eval "test \"\$$v\" = ''"; then
    AC_MSG_ERROR(could not determine $v number from version.h)
fi

done AS_IF([test “$MAJOR.$MINOR” != “$API_MAJOR.$API_MINOR”], [

AC_MSG_ERROR([API version $API_MAJOR.$API_MINOR differs from program version $MAJOR.$MINOR])

]) AC_SUBST(MAJOR) AC_SUBST(MINOR) AC_SUBST(TEENY) AC_SUBST(RUBY_PROGRAM_VERSION) RUBY_PATCHLEVEL=`sed -n 's/^#define RUBY_PATCHLEVEL //p' $srcdir/version.h` AC_DEFINE(CANONICALIZATION_FOR_MATHN) dnl checks for alternative programs AC_CANONICAL_BUILD RUBY_RM_RECURSIVE AC_ARG_WITH(gcc,

AS_HELP_STRING([--without-gcc], [never use gcc]),
[
AS_CASE([$withval],
    [no],  [: ${CC=cc}],
    [yes], [: ${CC=gcc}],
           [CC=$withval])])

dnl If the user switches compilers, we can't believe the cache if test ! -z “$ac_cv_prog_CC” -a ! -z “$CC” -a “$CC” != “$ac_cv_prog_CC” then

AC_MSG_ERROR(cached CC is different -- throw away $cache_file

(it is also a good idea to do 'make clean' before compiling)) fi test -z “$CC” || ac_cv_prog_CC=“$CC”

if test “$program_prefix” = NONE; then

program_prefix=

fi if test “$prefix” -ef .; then

AC_MSG_ERROR(--prefix cannot be the current working directory.)

fi RUBY_BASE_NAME=`echo ruby | sed “$program_transform_name”` RUBYW_BASE_NAME=`echo rubyw | sed “$program_transform_name”` AC_SUBST(RUBY_BASE_NAME) AC_SUBST(RUBYW_BASE_NAME) AC_SUBST(RUBY_VERSION_NAME, '${RUBY_BASE_NAME}-${ruby_version}')

AC_CANONICAL_TARGET test x“$target_alias” = x && target_os=`echo $target_os | sed 's/linux-gnu$/linux/;s/linux-gnu/linux-/'` ac_install_sh='' # unusable for extension libraries.

AC_ARG_WITH(os-version-style,

AS_HELP_STRING([--with-os-version-style=TYPE],
               [OS version number for target and target_os [[full]]]
               [(full|teeny|minor+0|minor|major+0|major|none)]),
[os_version_style=$withval],
[os_version_style=full
    AS_CASE($target_os, [[*[0-9].*]],
        [AS_CASE([`/usr/bin/ruby -e 'puts RUBY_PLATFORM' 2>/dev/null`],
            [[*-*[0-9].*.0]], [os_version_style=minor+0],
            [[*-*[0-9].*.*]], [os_version_style=full],
            [[*-*[0-9].0]  ], [os_version_style=major+0],
            [[*-*[0-9].*]  ], [os_version_style=minor],
            [[*-*[0-9]]    ], [os_version_style=major],
        )])
])

os_version_style_transform= AS_CASE(“${os_version_style}”,

[full|teeny], [],
[minor+0], [os_version_style_transform=['s/\([0-9]\.[0-9][0-9]*\)\.[0-9][.0-9]*$/\1.0/']],
[minor],   [os_version_style_transform=['s/\([0-9]\.[0-9][0-9]*\)\.[0-9][.0-9]*$/\1/']],
[major+0], [os_version_style_transform=['s/\([0-9]\)\.[0-9][.0-9]*$/\1.0/']],
[major],   [os_version_style_transform=['s/\([0-9]\)\.[0-9][.0-9]*$/\1/']],
[none],    [os_version_style_transform=['s/[0-9]\.[0-9][.0-9]*$//']],
[AC_MSG_ERROR(unknown --with-os-version-style: $withval)])

AS_IF([test -z “$target_alias” -a -n “$os_version_style_transform”],

[
target=`echo ${target} | sed "$os_version_style_transform"`
target_os=`echo ${target_os} | sed "$os_version_style_transform"`
])

AC_DEFUN(,

[# RUBY_APPEND_OPTION($1)
AS_CASE([" [$]{$1-} "],
[*" $2 "*], [], ['  '], [ $1="$2"], [ $1="[$]$1 $2"])])

AC_DEFUN(,

[# RUBY_APPEND_OPTIONS($1)
for rb_opt in $2; do
AS_CASE([" [$]{$1-} "],
[*" [$]{rb_opt} "*], [], ['  '], [ $1="[$]{rb_opt}"], [ $1="[$]$1 [$]{rb_opt}"])
done])

AC_DEFUN(,

[# RUBY_PREPEND_OPTION($1)
AS_CASE([" [$]{$1-} "],
[*" $2 "*], [], ['  '], [ $1="$2"], [ $1="$2 [$]$1"])])

AC_DEFUN(,

[# RUBY_PREPEND_OPTIONS($1)
unset rb_opts; for rb_opt in $2; do
AS_CASE([" [$]{rb_opts} [$]{$1-} "],
[*" [$]{rb_opt} "*], [], ['  '], [ $1="[$]{rb_opt}"], [ rb_opts="[$]{rb_opts}[$]{rb_opt} "])
done
$1="[$]{rb_opts}[$]$1"])

AC_ARG_WITH(arch,

 AS_HELP_STRING([--with-arch=ARCHS],
                [build an Apple/NeXT Multi Architecture Binary (MAB);
                   ARCHS is a comma-delimited list of architectures for
                   which to build; if this option is disabled or omitted
                   entirely, then the package will be built only for the
                   target platform]),
[target_archs="$withval"], [unset target_archs])

AC_DEFUN(, [ AC_MSG_CHECKING([arch option]) AS_CASE(,

[*64],        [ARCH_FLAG=-m64],
[[i[3-6]86]], [ARCH_FLAG=-m32],
[AC_MSG_ERROR(unknown target architecture: $target_archs)]
)

AC_MSG_RESULT() ])

AC_DEFUN(, [ # RUBY_UNIVERSAL_ARCH begin ARCH_FLAG=`expr “ $CXXFLAGS ” : ['.* (-m[0-9]*) ']` test ${CXXFLAGS+set} && CXXFLAGS=`echo “$CXXFLAGS” | sed [-e 's/ *-arch *[^ ]*//g' -e 's/ *-m32//g' -e 's/ *-m64//g']` ARCH_FLAG=`expr “ $CFLAGS ” : ['.* (-m[0-9]*) ']` test ${CFLAGS+set} && CFLAGS=`echo “$CFLAGS” | sed [-e 's/ *-arch *[^ ]*//g' -e 's/ *-m32//g' -e 's/ *-m64//g']` test ${LDFLAGS+set} && LDFLAGS=`echo “$LDFLAGS” | sed [-e 's/ *-arch *[^ ]*//g' -e 's/ *-m32//g' -e 's/ *-m64//g']` unset universal_binary universal_archnames if test ${target_archs+set}; then

AC_MSG_CHECKING([target architectures])
target_archs=`echo $target_archs | tr , ' '`
# /usr/lib/arch_tool -archify_list $TARGET_ARCHS
for archs in $target_archs
do
    AS_CASE([",$universal_binary,"],[*",$archs,"*], [],[
        cpu=`$SHELL "$ac_aux_dir/config.sub" "${archs}-${target_os}" 2>&1` || {
            AC_MSG_RESULT([failed])
            AC_MSG_ERROR([$cpu])
        }
        cpu=`echo $cpu | sed 's/-.*-.*//'`
        universal_binary="${universal_binary+$universal_binary,}$cpu"
        universal_archnames="${universal_archnames} ${archs}=${cpu}"
        ARCH_FLAG="${ARCH_FLAG+$ARCH_FLAG }-arch $archs"
        ])
done
target_archs="$universal_binary"
unset universal_binary
AS_CASE(["$target_archs"],
  [*,*], [universal_binary=yes],
         [unset universal_archnames])
AC_MSG_RESULT([$target_archs])

target=`echo $target | sed "s/^$target_cpu-/-/"`
target_alias=`echo $target_alias | sed "s/^$target_cpu-/-/"`
if test "${universal_binary-no}" = yes; then
    AC_SUBST(try_header,try_compile)
    target_cpu=universal
    real_cross_compiling=$cross_compiling
else
    if test x"$target_cpu" != x"${target_archs}"; then
        echo 'int main(){return 0;}' > conftest.c
        if $CC $CFLAGS $ARCH_FLAG -o conftest conftest.c > /dev/null 2>&1; then
            rm -fr conftest.*
        else
            RUBY_DEFAULT_ARCH("$target_archs")
        fi
    fi
    target_cpu=${target_archs}
fi
AS_CASE(["$target"], [-*], [ target="$target_cpu${target}"])
AS_CASE(["$target_alias"], [-*], [ target_alias="$target_cpu${target_alias}"])

else

if test x"$target_alias" = x; then
    AS_CASE(["$target_os"],
      [darwin*], [
        AC_MSG_CHECKING([for real target cpu])
        target=`echo $target | sed "s/^$target_cpu-/-/"`
        target_cpu=`$CC -E - 2>/dev/null <<EOF |

ifdef x86_64 “processor-name=x86_64” endif ifdef i386 “processor-name=i386” endif ifdef __ppc__ “processor-name=powerpc” endif ifdef ppc64 “processor-name=powerpc64” endif EOF

        sed -n 's/^"processor-name=\(.*\)"/\1/p'`
        target="$target_cpu${target}"
        AC_MSG_RESULT([$target_cpu])
        ])
fi
target_archs="$target_cpu"

fi if test “${target_archs}” != “${rb_cv_target_archs-${target_archs}}”; then

AC_MSG_ERROR([target arch(s) has changed from ${rb_cv_target_archs-nothing} to ${target_archs}])

else

rb_cv_target_archs=${target_archs}

fi if test “x${ARCH_FLAG}” != x; then

CFLAGS="${CFLAGS:+$CFLAGS }${ARCH_FLAG}"
LDFLAGS="${LDFLAGS:+$LDFLAGS }${ARCH_FLAG}"

fi # RUBY_UNIVERSAL_ARCH end ])

AC_ARG_ENABLE(load-relative,

AS_HELP_STRING([--enable-load-relative], [resolve load paths at run time]),
[load_relative=$enableval])

AC_ARG_PROGRAM

dnl Checks for programs.

cflagspat= test -z “$optflags” ||

cflagspat="$cflagspat;s|"`eval echo '"'"${optflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^ */ /;s/ *$/ /'`'| |g'

test -z “$debugflags” ||

cflagspat="$cflagspat;s|"`eval echo '"'"${debugflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^ */ /;s/ *$/ /'`'| |g'

test -z “warnflags” ||

cflagspat="$cflagspat;s|"`eval echo '"'"${warnflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^ */ /;s/ *$/ /'`'| |g'

if test -z “${CFLAGS+set}”; then

cflags=`echo " $cflags " | sed "$cflagspat;s/^ *//;s/ *$//"`
orig_cflags="$cflags"
cflags="$cflags "'${optflags} ${debugflags} ${warnflags}'

fi if test -z “${CXXFLAGS+set}”; then

cxxflags=`echo " $cxxflags " | sed "$cflagspat;s/^ *//;s/ *$//"`
orig_cxxflags="$cxxflags"
cxxflags="$cxxflags "'${optflags} ${debugflags} ${warnflags}'

RUBY_NACL AS_CASE(, [darwin*:darwin*], [

AC_CHECK_TOOLS(CC, [clang gcc cc])
# Following Apple deployed clang are broken
# clang version 1.0 (http://llvm.org/svn/llvm-project/cfe/tags/Apple/clang-23 exported)
# Apple clang version 2.0 (tags/Apple/clang-137) (based on LLVM 2.9svn)
# Apple clang version 2.1 (tags/Apple/clang-163.7.1) (based on LLVM 3.0svn)
if ! $CC -E -xc - <<SRC >/dev/null; then
    @%:@if defined __APPLE_CC__ && defined __clang_major__ && __clang_major__ < 3
    @%:@error premature clang
    @%:@endif

SRC

    AC_MSG_ERROR([clang version 3.0 or later is required])
fi

]) if test x“${build}” != x“${host}”; then

AC_CHECK_TOOL(CC, gcc)

AC_PROG_CC

dnl Select the appropriate C++ compiler in OS X AS_CASE(,

[darwin1*.*], [
  AS_CASE(["x$CC"],
    [xgcc-4.2|x/usr/bin/gcc-4.2], [: ${CXX=g++-4.2}],
    [xgcc|x/usr/bin/gcc],         [: ${CXX=g++}],
    [xcc|x/usr/bin/cc],           [: ${CXX=c++}],
    [xicc],                       [: ${CXX=icpc}],
    [xclang|x/usr/bin/clang],     [: ${CXX=clang++}])
])

test -z “$CXX” || ac_cv_prog_CXX=“$CXX”

AC_PROG_CXX RUBY_MINGW32 AC_PROG_GCC_TRADITIONAL AC_SUBST(GCC) AS_CASE(, [solaris*], [AC_PATH_TOOL(, [ld], [/usr/ccs/bin/ld], [/usr/ccs/bin:$PATH])], [AC_CHECK_TOOL(, [ld], [ld])]) AC_SUBST(LD) if test “$GCC” = yes; then

linker_flag=-Wl,
: ${optflags=-O3}
gcc_major=`echo =__GNUC__ | $CC -E -xc - | sed '/^=/!d;s///'`
gcc_minor=`echo =__GNUC_MINOR__ | $CC -E -xc - | sed '/^=/!d;s///'`
test -n "$gcc_major" || gcc_major=0
test -n "$gcc_minor" || gcc_minor=0
# RUBY_APPEND_OPTIONS(XCFLAGS, ["-include ruby/config.h" "-include ruby/missing.h"])

else

linker_flag=

RUBY_PROG_GNU_LD RUBY_CPPOUTFILE

: ${OUTFLAG='-o '} : ${COUTFLAG=${OUTFLAG}} : ${CSRCFLAG=''} AC_SUBST(OUTFLAG) AC_SUBST(COUTFLAG) AC_SUBST(CSRCFLAG)

cc_version= for option in –version -v -V -qversion; do

cc_version_message=`$CC $option 2>&1`
cc_version_status=$?
AS_CASE($cc_version_status, [0], [:], [continue])
AS_CASE($cc_version_message, [*Warning*], [continue])
cc_version='$(CC) '$option
break

done AC_SUBST(CC_VERSION, $cc_version) AC_SUBST(CC_VERSION_MESSAGE, $cc_version_message)

RUBY_UNIVERSAL_ARCH if test “$target_cpu” != “$host_cpu” -a “$GCC” = yes -a “$cross_compiling” = no -a “$universal_binary” = no; then

RUBY_DEFAULT_ARCH("$target_cpu")

AS_CASE(, [[i86*]], [

AC_CACHE_CHECK([for __sync_val_compare_and_swap], [rb_cv_gcc_compiler_cas], [
                AC_TRY_LINK([unsigned long atomic_var;],
                            [
                             __sync_val_compare_and_swap(&atomic_var, 0, 1);
                             ],
                             [rb_cv_gcc_compiler_cas=yes],
                             [rb_cv_gcc_compiler_cas=no])])
if test "$rb_cv_gcc_compiler_cas" = no; then
        unset rb_cv_gcc_compiler_cas
        save_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS -march=i486"
        AC_CACHE_CHECK([for __sync_val_compare_and_swap with -march=i486], [rb_cv_gcc_compiler_cas], [
                        AC_TRY_LINK([unsigned long atomic_var;],
                                    [
                                     __sync_val_compare_and_swap(&atomic_var, 0, 1);
                                     ],
                                     [rb_cv_gcc_compiler_cas=yes
                                      ARCH_FLAG="-march=i486"],
                                     [rb_cv_gcc_compiler_cas=no])])
        CFLAGS="$save_CFLAGS"
fi])

AS_CASE(, [darwin*], [ if libtool 2>&1 | grep no_warning_for_no_symbols > /dev/null; then

ac_cv_prog_ac_ct_RANLIB=:
ac_cv_prog_ac_ct_AR='libtool -static'
rb_cv_arflags='-no_warning_for_no_symbols -o'

fi ]) AC_CHECK_TOOL(RANLIB, ranlib, :) AC_CHECK_TOOL(AR, ar) if test -z “$AR”; then

AC_CHECK_PROGS(AR, aal, ar)

fi AC_CACHE_CHECK([for $AR flags], [rb_cv_arflags], [

AS_IF([$AR rcD conftest.a > /dev/null 2>&1 && rm conftest.a],
    [rb_cv_arflags=rcD], [rb_cv_arflags=rcu])

]) AC_SUBST(ARFLAGS, [“$rb_cv_arflags ”])

AC_CHECK_TOOL(AS, as) ASFLAGS=$ASFLAGS AC_SUBST(ASFLAGS)

AS_CASE(,[cygwin*|mingw*], [ac_cv_prog_ac_ct_OBJCOPY=“:”])

# BSD's ports and MacPorts prefix GNU binutils with 'g' AC_CHECK_TOOLS(OBJDUMP, [objdump gobjdump]) AC_CHECK_TOOLS(OBJCOPY, [objcopy gobjcopy])

AS_CASE(, [cygwin*|mingw*], [

AC_CHECK_TOOL(WINDRES, windres)
AC_CHECK_TOOL(DLLWRAP, dllwrap)
target=`echo $target | sed "s/^$target_cpu-/-/"`
target_alias=`echo $target_alias | sed "s/^$target_cpu-/-/"`
target_cpu=`echo $target_cpu | sed s/i.86/i386/`
AS_CASE(["$target"], [-*], [ target="$target_cpu${target}"])
AS_CASE(["$target_alias"], [-*], [ target_alias="$target_cpu${target_alias}"])
AS_CASE(["$target_os"],
[mingw*], [
    test "$rb_cv_msvcrt" = "" && unset rb_cv_msvcrt
    AC_CACHE_CHECK(for mingw32 runtime DLL, rb_cv_msvcrt, [
    AC_TRY_LINK([@%:@include <stdio.h>],
                [FILE* volatile f = stdin; return 0;],
                [rb_cv_msvcrt=`$OBJDUMP -p conftest$ac_exeext |
                               tr A-Z a-z |
                               sed -n '/^[[         ]]*dll name: \(msvc.*\)\.dll$/{s//\1/p;q;}'`],
                [rb_cv_msvcrt=msvcrt])
    test "$rb_cv_msvcrt" = "" && rb_cv_msvcrt=msvcrt])
    RT_VER=`echo "$rb_cv_msvcrt" | tr -cd [0-9]`
    test "$RT_VER" = "" && RT_VER=60
    AC_DEFINE_UNQUOTED(RUBY_MSVCRT_VERSION, $RT_VER)
])
: ${enable_shared=yes}
],

[aix*], [AC_CHECK_TOOL(NM, nm, /usr/ccs/bin/nm, /usr/ccs/bin:$PATH)], [hiuxmpp*], [AC_DEFINE(HIUX_MPP)]) # by TOYODA Eizi <toyoda@npd.kishou.go.jp> AC_CHECK_TOOL(NM, nm)

AC_PROG_LN_S AC_PROG_MAKE_SET AC_PROG_INSTALL AC_PROG_MKDIR_P if test “x$MKDIR_P” = “x -d”; then

if test x"$as_mkdir_p" != xfalse; then
  MKDIR_P='mkdir -p'
  echo "use 'mkdir -p' as MKDIR_P"
else
  AC_MSG_ERROR([mkdir -p is required])
fi

fi MAKEDIRS=“$MKDIR_P” AC_SUBST(MAKEDIRS)

AC_DEFUN(, [AC_CACHE_CHECK(whether dtrace USDT is available, rb_cv_dtrace_available, [

echo "provider conftest{ probe fire(); };" > conftest_provider.d
rb_cv_dtrace_available=no
AS_FOR(opt, rb_dtrace_opt, ["-xnolibs" ""], [dnl
    AS_IF([$DTRACE opt -h -o conftest_provider.h -s conftest_provider.d >/dev/null 2>/dev/null],
        [], [continue])
    AC_TRY_COMPILE([@%:@include "conftest_provider.h"], [CONFTEST_FIRE();],
        [], [continue])
    # DTrace is available on the system
    rb_cv_dtrace_available=yes${rb_dtrace_opt:+"(opt)"}
    break
])
rm -f conftest.[co] conftest_provider.[dho]

]) AS_CASE(, [“yes(”*“)”],

[DTRACE_OPT=`expr "$rb_cv_dtrace_available" : "yes(\(.*\))"`])

])

AC_DEFUN(, [AC_CACHE_CHECK(whether $DTRACE needs post processing, rb_cv_prog_dtrace_g, [

rb_cv_prog_dtrace_g=no
if {
  cat >conftest_provider.d <<_PROBES &&
  provider conftest {
    probe fire();
  };

_PROBES

  $DTRACE ${DTRACE_OPT} -h -o conftest_provider.h -s conftest_provider.d >/dev/null 2>/dev/null &&
  :
}; then
  AC_TRY_COMPILE([@%:@include "conftest_provider.h"], [CONFTEST_FIRE();], [
      if {
          cp -p conftest.${ac_objext} conftest.${ac_objext}.save &&
          $DTRACE ${DTRACE_OPT} -G -s conftest_provider.d conftest.${ac_objext} 2>/dev/null &&
          :
      }; then
          if cmp -s conftest.o conftest.${ac_objext}.save; then
              rb_cv_prog_dtrace_g=yes
          else
              rb_cv_prog_dtrace_g=rebuild
          fi
      fi])
fi
rm -f conftest.[co] conftest_provider.[dho]

]) ])

AC_CHECK_PROG(, [${ac_tool_prefix}dtrace], [${ac_tool_prefix}dtrace]) if test “$cross_compiling:$ac_cv_prog_DTRACE” = no: -a -n “$ac_tool_prefix”; then

AC_CHECK_PROG([DTRACE], [dtrace], [dtrace])

AC_CHECK_PROGS(DOT, dot) AC_CHECK_PROGS(DOXYGEN, doxygen) AS_CASE(, [nacl], [AC_PATH_PROG(PYTHON, python)])

AC_CHECK_PROG(PKG_CONFIG, pkg-config, [pkg-config], [], [],

[`"$as_dir/$ac_word$ac_exec_ext" --print-errors --version > /dev/null 2>&1 || echo "$as_dir/$ac_word$ac_exec_ext"`])

# checks for UNIX variants that set C preprocessor variables AC_USE_SYSTEM_EXTENSIONS

AC_SUBST(RM, ['rm -f']) AC_SUBST(CP, ['cp']) RMDIRS='$(top_srcdir)/tool/rmdirs' RMDIR=rmdir mkdir “rmdirs_$$_test” “rmdirs_$$_test/a” rmdir –ignore-fail-on-non-empty “rmdirs_$$_test” 2>/dev/null && RMDIR='rmdir –ignore-fail-on-non-empty' $RMDIR -p “rmdirs_$$_test/a” 2>/dev/null && { test -d “rmdirs_$$_test” || RMDIRS=“$RMDIR -p”; } rmdir “rmdirs_$$_test/a” “rmdirs_$$_test” 2>/dev/null AC_SUBST(RMDIR) AC_SUBST(RMDIRS) AC_SUBST(RMALL, ['rm -fr'])

AC_MSG_CHECKING([for cd using physical directory]) rm -fr conf$$.dir mkdir conf$$.dir && (cd conf$$.dir && mkdir src build && cd src && $as_ln_s ../build . > /dev/null 2>&1 && cd build && for chdir in 'cd -P' 'PWD= cd'; do

/bin/sh -c "$chdir ../src && echo '$chdir' > cdcmd" 2> /dev/null && break

done) if test -f conf$$.dir/src/cdcmd; then

read CHDIR < conf$$.dir/src/cdcmd 2> /dev/null

else

CHDIR=cd

fi rm -fr conf$$.dir AC_MSG_RESULT() AC_SUBST(CHDIR)

} { # compiler section

AC_DEFUN(, [dnl save_CFLAGS=“$CFLAGS” CFLAGS=“$CFLAGS $rb_cv_warnflags” if test “${ac_c_werror_flag+set}”; then

rb_c_werror_flag="$ac_c_werror_flag"

else

unset rb_c_werror_flag

fi ac_c_werror_flag=yes $1 CFLAGS=“$save_CFLAGS” save_CFLAGS= if test “${rb_c_werror_flag+set}”; then

ac_c_werror_flag="$rb_c_werror_flag"

else

unset ac_c_werror_flag

fi])

RUBY_WERROR_FLAG([

AC_MSG_CHECKING([whether CFLAGS is valid])
AC_TRY_COMPILE([], [],
    [AC_MSG_RESULT(yes)],
    [
    AC_MSG_RESULT(no)
    AC_MSG_ERROR([something wrong with CFLAGS="$CFLAGS"])
    ]
)
AC_MSG_CHECKING([whether LDFLAGS is valid])
{
    mkdir tmp.$$.try_link &&
    cd tmp.$$.try_link &&
    cp ../confdefs.h . &&
    echo '<?xml?><plist><dict><key>CFBundleIdentifier</key><string></string></dict></plist>' > Info.plist &&
    :
} || AC_MSG_ERROR([failed to make temporary directory])
AC_TRY_LINK([], [],
    [AC_MSG_RESULT(yes)],
    [
    cd .. && rm -fr tmp.$$.try_link
    AC_MSG_RESULT(no)
    AC_MSG_ERROR([something wrong with LDFLAGS="$LDFLAGS"])
    ]
)
cd .. && rm -fr tmp.$$.try_link

])

AC_DEFUN(, [

AC_MSG_CHECKING([whether ]$1[ is accepted as CFLAGS])
RUBY_WERROR_FLAG([
CFLAGS="[$]CFLAGS $1"
AC_TRY_COMPILE([$4], [$5],
    [$2
    AC_MSG_RESULT(yes)],
    [$3
    AC_MSG_RESULT(no)])
])

])

AC_DEFUN(, [

save_LDFLAGS="$LDFLAGS"
LDFLAGS="[$]LDFLAGS $1"
AC_MSG_CHECKING([whether $1 is accepted as LDFLAGS])
RUBY_WERROR_FLAG([
AC_TRY_LINK([$4], [$5],
    [$2
    AC_MSG_RESULT(yes)],
    [$3
    AC_MSG_RESULT(no)])
])
LDFLAGS="$save_LDFLAGS"
save_LDFLAGS=

])

: ${DLDFLAGS=“$LDFLAGS”} : ${RPATHFLAG=''} rpathflag='' AS_IF([test x“${RPATHFLAG}” = x], [

AS_CASE(["$target_os"],
    [hpux*], [AS_IF([test "$rb_cv_prog_gnu_ld" = no], [rpathflag='+b '])],
    [aix*], [rpathflag='-blibpath:'],
    [for rpathflag in -R "-rpath "; do
        AS_CASE("$rpathflag",
                [*" "], [AS_CASE(["${linker_flag}"],
                                 [*,], [rpathflag=`echo "$rpathflag" | tr ' ' ,`])])
        rpathflag="${linker_flag}${rpathflag}"
        RUBY_TRY_LDFLAGS([${rpathflag}.], [], [rpathflag=])
        AS_IF([test "x${rpathflag}" != x], [])
    done])

], [

rpathflag=`echo "$RPATHFLAG" | sed 's/%.*//'`

])

AS_CASE(, [-*],

[particular_werror_flags=yes], [particular_werror_flags=no])

AC_ARG_ENABLE(werror,

AS_HELP_STRING([--disable-werror],
               [don't make warnings into errors
               even if a compiler support -Werror feature
               [[disabled by default unless development version]]]),
[particular_werror_flags=$enableval])

rb_cv_warnflags=“$warnflags” if test “$GCC:${warnflags+set}:no” = yes::no; then

if test $gcc_major -ge 4; then
    extra_warning=-Werror=extra-tokens
else
    extra_warning=
fi
if test $gcc_major -ge 5 -a $gcc_major -le 6; then
    extra_warning="$extra_warning -Wno-maybe-uninitialized"
fi
for wflag in -Wno-unused-parameter -Wno-parentheses -Wno-long-long \
             -diag-disable=2259 \
             -Wno-missing-field-initializers \
             -Wno-tautological-compare \
             -Wno-parentheses-equality \
             -Wno-constant-logical-operand \
             -Wno-self-assign \
             -Wunused-variable \
             -Werror=implicit-int \
             -Werror=pointer-arith \
             -Werror=write-strings \
             -Werror=declaration-after-statement \
             -Werror=shorten-64-to-32 \
             -Werror=implicit-function-declaration \
             -Werror=division-by-zero \
             -Werror=deprecated-declarations \
             -Wno-packed-bitfield-compat \
             -Wsuggest-attribute=noreturn \
             -Wsuggest-attribute=format \
             -Wimplicit-fallthrough=0 \
             $extra_warning \
             ; do
    if test "$particular_werror_flags" != yes; then
        wflag=`echo x$wflag | sed 's/^x-Werror=/-W/;s/^x//'`
    fi
    ok=no
    RUBY_TRY_CFLAGS($wflag, [
        RUBY_APPEND_OPTIONS(warnflags, $wflag)
        ok=yes
    ])
    AS_CASE([$ok:$wflag], [no:-Werror=*], [
        wflag=`echo x$wflag | sed 's/^x-Werror=/-W/'`
        RUBY_TRY_CFLAGS($wflag, [
            RUBY_APPEND_OPTIONS(warnflags, $wflag)
            particular_werror_flags=no
        ])
    ])
done
AS_CASE([" $warnflags "],[*" -Wno-missing-field-initializers "*], [wflag="-Wall -Wextra"],
                         [wflag=-Wall])
RUBY_TRY_CFLAGS($wflag, [warnflags="$wflag${warnflags+ $warnflags}"])
# Disable warnflags while conftest. -Werror=* flags might make bad OS capability guess.
rb_cv_warnflags="$warnflags"
warnflags=

fi RUBY_TRY_CFLAGS(-Qunused-arguments, [RUBY_APPEND_OPTIONS(rb_cv_wsuppress_flags, -Qunused-arguments)])

for n in infinity nan; do

m=AS_TR_CPP($n)
AC_CACHE_CHECK([whether $m is available without C99 option], rb_cv_$n,
    [AC_COMPILE_IFELSE(
        [AC_LANG_BOOL_COMPILE_TRY(AC_INCLUDES_DEFAULT([@%:@include <math.h>

@%:@ifndef $m @%:@error no $m @%:@endif ]), [1])], [eval rb_cv_$n=yes], [eval rb_cv_$n=no])])

if eval test '"$rb_cv_'$n'"' = yes; then
    AC_DEFINE_UNQUOTED([HAVE_]$m)
fi

done

AC_ARG_WITH(compress-debug-sections,

AS_HELP_STRING([--with-compress-debug-sections=type],
    [enable debug section compression]),
[compress_debug_sections=$withval], [compress_debug_sections=])

if test “$GCC” = yes; then

 # NaCl's glibc build generates undefined references to __memset_chk.
 # TODO(sbc): Remove this once NaCl's glibc is fixed.
 AS_CASE(["$target_os"], [nacl], [], [
   # -D_FORTIFY_SOURCE
   # When defined _FORTIFY_SOURCE, glibc enables some additional sanity
   # argument check. The performance drop is very little and Ubuntu enables
   # _FORTIFY_SOURCE=2 by default. So, let's support it for protecting us from
   # a mistake of silly C extensions.
   RUBY_TRY_CFLAGS(-D_FORTIFY_SOURCE=2, [RUBY_APPEND_OPTION(XCFLAGS, -D_FORTIFY_SOURCE=2)])
])

 # -fstack-protector
 AS_CASE(["$target_os"],
 [mingw*|nacl], [
     stack_protector=no
 ])
 if test -z "${stack_protector+set}"; then
     RUBY_TRY_CFLAGS(-fstack-protector, [stack_protector=yes], [stack_protector=no])
     if test "x$stack_protector" = xyes; then
         RUBY_TRY_LDFLAGS(-fstack-protector, [], [stack_protector=broken])
     fi
 fi
 if test "x$stack_protector" = xyes; then
     RUBY_APPEND_OPTION(XCFLAGS, -fstack-protector)
     RUBY_APPEND_OPTION(XLDFLAGS, -fstack-protector)
     RUBY_APPEND_OPTION(LDFLAGS, -fstack-protector)
 fi

 AS_CASE("${compress_debug_sections:-zlib}",
 [none|no], [], [
 RUBY_TRY_LDFLAGS(${linker_flag}--compress-debug-sections=${compress_debug_sections:-zlib},
                  [compress_debug_sections=${compress_debug_sections:-zlib}],
                  [compress_debug_sections=no])
 ])
 if test "x$compress_debug_sections" != xno; then
     RUBY_APPEND_OPTION(DLDFLAGS, ${linker_flag}--compress-debug-sections=$compress_debug_sections)
 fi

 AS_CASE(["$target_os"],[mingw*], [
   # On  Windows  platforms,   system  provided  headers  are  VC++
   # optimized.  That  is, C++  habits are often  contaminated into
   # various  headers.  Most frequent  situation is  the use  of //
   # comments.   We  bypass  ANSI   C  mode  for  them.   Otherwise
   # extension libs cannot include those headers.

   # Since math.h in some mingw64 wrongly delcares frexp and modf
   # to be pure, the variables pointed by the second arguments are
   # considered uninitialized unexpectedly.
   AC_CACHE_CHECK([whether frexp and modf are broken],
     rb_cv_mingw64_broken_frexp_modf,
     [
       save_CFLAGS="$CFLAGS"
       if test "$particular_werror_flags" = "yes"; then
         CFLAGS="$CFLAGS -Werror=uninitialized"
       else
         CFLAGS="$CFLAGS -Werror -Wuninitialized"
       fi
       AC_TRY_COMPILE([@%:@include <math.h>
         int foo(double x)
         {
           int exp;
           frexp(x, &exp);
           return exp;
         }], [if (foo(0.0)) return 1;],
         [rb_cv_mingw64_broken_frexp_modf=no],
         [rb_cv_mingw64_broken_frexp_modf=yes])
       CFLAGS="$save_CFLAGS"
     ])
   if test "$rb_cv_mingw64_broken_frexp_modf" = yes; then
     AC_DEFINE(RUBY_MINGW64_BROKEN_FREXP_MODF)
   fi
 ],
 [cygwin*|darwin*|netbsd*|nacl], [
   # need lgamma_r(), finite()
 ],
 [
   # ANSI (no XCFLAGS because this is C only)
     for ansi_options in -std=gnu99; do
         RUBY_TRY_CFLAGS(${ansi_options}, [
             RUBY_APPEND_OPTIONS(warnflags, ${ansi_options})
             RUBY_APPEND_OPTIONS(strict_warnflags, ${ansi_options})
         ], [ansi_options=])
         test "x${ansi_options}" = x || break
     done
 ])

 # suppress annoying -Wstrict-overflow warnings
 RUBY_TRY_CFLAGS(-fno-strict-overflow, [RUBY_APPEND_OPTION(XCFLAGS, -fno-strict-overflow)])

 test "${debugflags+set}" || {RUBY_TRY_CFLAGS(-ggdb3, [debugflags=-ggdb3])}
 test "${debugflags+set}" || {RUBY_TRY_CFLAGS(-ggdb, [debugflags=-ggdb])}
 test "${debugflags+set}" || {RUBY_TRY_CFLAGS(-g3, [debugflags=-g3])}

fi test $ac_cv_prog_cc_g = yes && : ${debugflags=-g}

if test “$GCC” = “”; then

AS_CASE(["$target_os"],[aix*],[warnflags="$warnflags -qinfo=por" rb_cv_warnflags="$rb_cv_warnflags -qinfo=por"])

fi if test “$GCC” = yes; then

if test "$gcc_major" -ge 4; then
    RUBY_TRY_CFLAGS(-fvisibility=hidden, [visibility_option=yes], [visibility_option=no])
fi
AC_SUBST(WERRORFLAG, "-Werror")
if test "$visibility_option" = yes; then
    RUBY_APPEND_OPTION(XCFLAGS, -fvisibility=hidden)
    AC_DEFINE(RUBY_SYMBOL_EXPORT_BEGIN, [_Pragma("GCC visibility push(default)")])
    AC_DEFINE(RUBY_SYMBOL_EXPORT_END,   [_Pragma("GCC visibility pop")])
else
    RUBY_TRY_LDFLAGS([-Wl,-unexported_symbol,_Init_*], [visibility_option=ld], [visibility_option=no])
fi
test "$visibility_option" = no -o "$host_os" = nacl || OBJCOPY=:

if test “$GCC” = yes; then

# optflags

AS_CASE(["$target_os"], [mingw*], [
    RUBY_TRY_CFLAGS(-fno-omit-frame-pointer, [optflags="${optflags+$optflags }-fno-omit-frame-pointer"])
    RUBY_TRY_CFLAGS(-static-libgcc, [static_libgcc=yes], [static_libgcc=no])
    if test "$static_libgcc" = yes; then
        RUBY_APPEND_OPTION(EXTLDFLAGS, -static-libgcc)
    fi
])

# disable fast-math
for oflag in -fno-fast-math; do
    RUBY_TRY_CFLAGS($oflag, [RUBY_APPEND_OPTION(optflags, $oflag)])
done
for oflag in -fexcess-precision=standard -fp-model\ precise; do
    RUBY_TRY_CFLAGS($oflag, [RUBY_APPEND_OPTION(XCFLAGS, $oflag)])
done

AC_ARG_WITH(opt-dir,

AS_HELP_STRING([--with-opt-dir=DIR-LIST],
               [add optional headers and libraries directories separated by $PATH_SEPARATOR]),
[
        val=`echo "$PATH_SEPARATOR$withval" | sed "s|$PATH_SEPARATOR\([[^$PATH_SEPARATOR]*]\)| -I\1/include|g;s/^ //"`
        CPPFLAGS="$CPPFLAGS $val"
        val=`echo "$PATH_SEPARATOR$withval" | sed "s|$PATH_SEPARATOR\([[^$PATH_SEPARATOR]*]\)| -L\1/lib${rpathflag:+ $rpathflag\\\\1/lib}|g;s/^ //"`
        LDFLAGS="$LDFLAGS $val"
        LDFLAGS_OPTDIR="$val"
        OPT_DIR="$withval"
], [OPT_DIR=])

test -z “${ac_env_CFLAGS_set}” -a -n “${cflags+set}” && eval CFLAGS=“"$cflags $ARCH_FLAG"” test -z “${ac_env_CXXFLAGS_set}” -a -n “${cxxflags+set}” && eval CXXFLAGS=“"$cxxflags $ARCH_FLAG"”

} { # header and library section

AC_ARG_WITH(winnt-ver,

AS_HELP_STRING([--with-winnt-ver=0xXXXX], [target Windows NT version (default to 0x0501)]),
[with_winnt_ver="$withval"], [with_winnt_ver="0x0501"])

AS_CASE(, [mingw*], [

RUBY_APPEND_OPTION(CPPFLAGS, -D_WIN32_WINNT=$with_winnt_ver)
RUBY_APPEND_OPTION(CPPFLAGS, -D__MINGW_USE_VC2005_COMPAT)

])

AS_CASE(, [freebsd*], [

AC_CACHE_CHECK([whether pthread should be enabled by default],
  rb_cv_enable_pthread_default,
  [AC_TRY_CPP([

include <osreldate.h> if __FreeBSD_version < 502102 error pthread should be disabled on this platform endif

    ],
    rb_cv_enable_pthread_default=yes,
    rb_cv_enable_pthread_default=no)])
enable_pthread=$rb_cv_enable_pthread_default
],

[mingw*], [

enable_pthread=no
],

[

enable_pthread=yes
])

AC_ARG_ENABLE(pthread,

AS_HELP_STRING([--enable-pthread], [obsolete, and ignored]))

dnl Checks for libraries. AS_CASE(,[bsd|dragonfly*],[],)

POSTLINK=: AC_SUBST(POSTLINK) AS_CASE(, [nextstep*], [ ], [openstep*], [ ], [rhapsody*], [ ], [darwin*], [ RUBY_PREPEND_OPTION(LIBS, -lobjc)

RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT)
AC_MSG_CHECKING(whether Mac OS X 10.5 or later)
AC_TRY_CPP([#include <AvailabilityMacros.h>
    #if MAC_OS_X_VERSION_MAX_ALLOWED <= 1040
    #error pre OS X 10.4
    [!<===== pre OS X 10.4 =====>]
    #endif
    ],
    [macosx_10_5=yes], [macosx_10_5=no])
AC_MSG_RESULT($macosx_10_5)
AS_IF([test "${target_os@%:@darwin}" -ge 16], [
    ac_cv_func___syscall=no
    ac_cv_func_syscall=no
    ac_cv_header_sys_syscall_h=no
    ac_cv_header_syscall_h=no
])
if test $macosx_10_5 = yes; then
    ac_cv_func_getcontext=no
    ac_cv_func_setcontext=no
else
    AC_DEFINE(BROKEN_SETREUID, 1)
    AC_DEFINE(BROKEN_SETREGID, 1)
fi
incs=`$CC -v -E -xc - < /dev/null 2>&1 | sed ['1,/^@%:@include </d;s/^ *//;s|[^./][^/]*/\.\./||g;/\/include$/!d;s||/lib|;/\/usr\/lib/d']`
for d in `$CC -print-search-dirs | sed -e '/^libraries: */!d;s///' | tr : '\012' | fgrep -v /../ | sed -n 's|^\(/.*/lib\)/$|\1|p'`; do
    incs=`echo "$incs" | fgrep -v "$d"`
done
for d in $incs; do
    test -d "$d" && RUBY_APPEND_OPTIONS(LDFLAGS, "-L$d")
done
ac_cv_type_getgroups=gid_t # getgroups() on Rosetta fills garbage
ac_cv_lib_crypt_crypt=no
ac_cv_func_fdatasync=no # Mac OS X wrongly reports it has fdatasync()
ac_cv_func_vfork=no
if test $gcc_major -lt 4 -o \( $gcc_major -eq 4 -a $gcc_minor -lt 3 \); then
    ac_cv_func___builtin_setjmp=no
fi
AC_CACHE_CHECK(for broken crypt with 8bit chars, rb_cv_broken_crypt,
    [AC_TRY_RUN([

include <stdio.h> include <unistd.h> include <string.h>

void broken_crypt(const char *salt, const char *buf1, const char *buf2) { if 0

printf("%.2x%.2x: %s -> %s\n", (unsigned char)salt[0], (unsigned char)salt[1],
       buf1+2, buf2+2);

endif }

int main() {

int i;
char salt[2], buf[256], *s;
for (i = 0; i < 128*128; i++) {
    salt[0] = 0x80 | (i & 0x7f);
    salt[1] = 0x80 | (i >> 7);
    strcpy(buf, crypt("", salt));
    if (strcmp(buf, s = crypt("", salt))) {
        broken_crypt(salt, buf, s);
        return 1;
    }
}
salt[0] = salt[1] = ' ';
strcpy(buf, crypt("", salt));
salt[0] = salt[1] = 0x80 | ' ';
if (strcmp(buf, s = crypt("", salt))) {
    broken_crypt(salt, buf, s);
    return 1;
}
return 0;

} ],

    rb_cv_broken_crypt=no,
    rb_cv_broken_crypt=yes,
    rb_cv_broken_crypt=yes)])
if test "$rb_cv_broken_crypt" = yes; then
   AC_DEFINE(BROKEN_CRYPT, 1)
fi
AC_CHECK_PROGS(codesign, codesign)
if test -n "$codesign"; then
    POSTLINK="test -z '\$(RUBY_CODESIGN)' || $codesign -s '\$(RUBY_CODESIGN)' -f \$@"
    LINK_SO="$LINK_SO

$(POSTLINK)“

fi
AC_CHECK_HEADERS(crt_externs.h, [], [], [
    #include <crt_externs.h>
])
],

[hpux*], [ LIBS=“-lm $LIBS”

ac_cv_c_inline=no],

[solaris*], [ LIBS=“-lm $LIBS”

ac_cv_func_vfork=no
AC_MSG_CHECKING(whether _XOPEN_SOURCE is already given)
AC_TRY_COMPILE([#include <unistd.h>
    #ifndef _XOPEN_SOURCE
    #error _XOPEN_SOURCE is not defined
    #endif
    ], [],
    [given_xopen_source=yes], [given_xopen_source=no])
AC_MSG_RESULT($given_xopen_source)
if test $given_xopen_source = no; then
  # On Solaris, with gcc, -std=iso9899:1999 in $ansi_options
  # is often also needed in CPPFLAGS, because some feature
  # definitions vary depending on such standards options.
  AS_CASE(["${ansi_options}"],
  [*-std=iso9899:1999*], [
    RUBY_APPEND_OPTIONS(CPPFLAGS, ${ansi_options})
  ])
  AC_MSG_CHECKING(appropriate _XOPEN_SOURCE value to define)
  define_xopen_source=""
  for tmp_xpg in 7 6 5; do
    if test x"$define_xopen_source" != x; then
        break
    fi
    # Both AC_TRY_CPP and AC_TRY_COMPILE should pass
    # because some options may not be set to CPPFLAGS.
    AC_TRY_CPP([
        #define _XOPEN_SOURCE ${tmp_xpg}00
        #include <unistd.h>
        #ifndef _XPG${tmp_xpg}
        #error _XPG${tmp_xpg} should be defined by _XOPEN_SOURCE=${tmp_xpg}00
        #endif
        ], [
        AC_TRY_COMPILE([
        #define _XOPEN_SOURCE ${tmp_xpg}00
        #include <unistd.h>
        #ifndef _XPG${tmp_xpg}
        #error _XPG${tmp_xpg} should be defined by _XOPEN_SOURCE=${tmp_xpg}00
        #endif
        ], [],
        [define_xopen_source=${tmp_xpg}00], [])
        ], [])
  done
  if test x"$define_xopen_source" = x; then
    define_xopen_source=no
  fi
  AC_MSG_RESULT($define_xopen_source)
  if test x"$define_xopen_source" != xno; then
    RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE=$define_xopen_source)
  fi
fi
],

[haiku*], [

LIBS="$LIBS" # m lib is include in root
],

[cygwin*], [ ac_cv_header_langinfo_h=yes

RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE -D_GNU_SOURCE)
AC_CHECK_FUNCS(cygwin_conv_path)
AC_LIBOBJ([langinfo])
],

[mingw*], [ LIBS=“-lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi $LIBS”

ac_cv_header_a_out_h=no
ac_cv_header_pwd_h=no
ac_cv_header_utime_h=no
ac_cv_header_sys_ioctl_h=no
ac_cv_header_sys_param_h=no
ac_cv_header_sys_resource_h=no
ac_cv_header_sys_select_h=no
ac_cv_header_sys_time_h=no
ac_cv_header_sys_times_h=no
ac_cv_header_sys_socket_h=no
ac_cv_func_lstat=yes
ac_cv_func_times=yes
ac_cv_func_waitpid=yes
ac_cv_func_fsync=yes
ac_cv_func_seekdir=yes
ac_cv_func_telldir=yes
ac_cv_func_isinf=yes
ac_cv_func_isnan=yes
ac_cv_func_finite=yes
ac_cv_func_lchown=yes
ac_cv_func_link=yes
ac_cv_func_readlink=yes
ac_cv_func_symlink=yes
ac_cv_lib_crypt_crypt=no
ac_cv_func_getpgrp_void=no
ac_cv_func_memcmp_working=yes
ac_cv_lib_dl_dlopen=no
rb_cv_binary_elf=no
rb_cv_negative_time_t=no
ac_cv_func_fcntl=yes
ac_cv_func_flock=yes
ac_cv_func_gmtime_r=yes
rb_cv_large_fd_select=yes
ac_cv_type_struct_timeval=yes
ac_cv_func_clock_gettime=yes
ac_cv_func_clock_getres=yes
ac_cv_func_malloc_usable_size=no
AS_IF([test "$target_cpu" = x64], [
    ac_cv_func___builtin_setjmp=no
    ac_cv_func_round=no
])
AC_CHECK_TYPE([NET_LUID], [], [],
              [@%:@include <winsock2.h>
              @%:@include <iphlpapi.h>])
if test x"$ac_cv_type_NET_LUID" = xyes; then
    AC_DEFINE(HAVE_TYPE_NET_LUID, 1)
fi
AC_CHECK_FUNCS(_gmtime64_s)
AC_CHECK_FUNCS(_wfreopen_s)
AC_LIBOBJ([langinfo])
],

[bsdi*], [ LIBS=“-lm $LIBS”

AC_DEFINE(BROKEN_SETREUID, 1)
AC_DEFINE(BROKEN_SETREGID, 1)
ac_cv_sizeof_rlim_t=8],

[freebsd*], [ LIBS=“-lm $LIBS”

ac_cv_func_getpeername=no
ac_cv_func_getsockname=no
ac_cv_func_shutdown=no
ac_cv_func_close=no
],

[netbsd*], [ LIBS=“-lm $LIBS”

],

[dragonfly*], [ LIBS=“-lm $LIBS”

# isinf() and isnan() are macros on DragonFly.
ac_cv_func_isinf=yes
ac_cv_func_isnan=yes
],

[aix*],[ LIBS=“-lm $LIBS”

ac_cv_func_round=no
],

[nacl], [

LIBS="-lm $LIBS"
if test "${nacl_cv_build_variant}" = "newlib"; then
  RUBY_APPEND_OPTION(CPPFLAGS, -DNACL_NEWLIB)
else
  RUBY_APPEND_OPTION(XCFLAGS, -fPIC)
fi
],

[ LIBS=“-lm $LIBS”])

AC_CHECK_LIB(crypt, crypt) # glibc (GNU/Linux, GNU/Hurd, GNU/kFreeBSD) AC_CHECK_LIB(dl, dlopen) # Dynamic linking for SunOS/Solaris and SYSV AC_CHECK_LIB(dld, shl_load) # Dynamic linking for HP-UX AC_CHECK_LIB(socket, shutdown) # SunOS/Solaris

dnl Checks for header files. AC_HEADER_DIRENT dnl AC_HEADER_STDC has been checked in AC_USE_SYSTEM_EXTENSIONS AC_HEADER_STDBOOL AC_HEADER_SYS_WAIT

AC_CHECK_HEADERS(a.out.h) AC_CHECK_HEADERS(atomic.h) AC_CHECK_HEADERS(direct.h) AC_CHECK_HEADERS(grp.h) AC_CHECK_HEADERS(fcntl.h) AC_CHECK_HEADERS(float.h) AC_CHECK_HEADERS(ieeefp.h) AC_CHECK_HEADERS(intrinsics.h) AC_CHECK_HEADERS(langinfo.h) AC_CHECK_HEADERS(limits.h) AC_CHECK_HEADERS(locale.h) AC_CHECK_HEADERS(malloc.h) AC_CHECK_HEADERS(malloc/malloc.h) AC_CHECK_HEADERS(malloc_np.h) AC_CHECK_HEADERS(net/socket.h) AC_CHECK_HEADERS(process.h) AC_CHECK_HEADERS(pwd.h) AC_CHECK_HEADERS(setjmpex.h) AC_CHECK_HEADERS(sys/attr.h) AC_CHECK_HEADERS(sys/fcntl.h) AC_CHECK_HEADERS(sys/file.h) AC_CHECK_HEADERS(sys/id.h) AC_CHECK_HEADERS(sys/ioctl.h) AC_CHECK_HEADERS(sys/mkdev.h) AC_CHECK_HEADERS(sys/param.h) AC_CHECK_HEADERS(sys/prctl.h) AC_CHECK_HEADERS(sys/resource.h) AC_CHECK_HEADERS(sys/select.h) AC_CHECK_HEADERS(sys/sendfile.h) AC_CHECK_HEADERS(sys/socket.h) AC_CHECK_HEADERS(sys/syscall.h) AC_CHECK_HEADERS(sys/sysmacros.h) AC_CHECK_HEADERS(sys/time.h) AC_CHECK_HEADERS(sys/times.h) AC_CHECK_HEADERS(sys/uio.h) AC_CHECK_HEADERS(sys/utime.h) AC_CHECK_HEADERS(syscall.h) AC_CHECK_HEADERS(time.h) AC_CHECK_HEADERS(ucontext.h) AC_CHECK_HEADERS(utime.h)

AC_ARG_WITH(,

[AS_HELP_STRING([--without-gmp],
  [disable GNU GMP to accelerate Bignum operations])],
[],
[with_gmp=yes])

AS_IF([test “x$with_gmp” != xno],

[AC_CHECK_HEADERS(gmp.h)
 AS_IF([test "x$ac_cv_header_gmp_h" != xno],
   AC_SEARCH_LIBS([__gmpz_init], [gmp],
     [AC_DEFINE(HAVE_LIBGMP, 1)]))])

AC_ARG_WITH(,

[AS_HELP_STRING([--with-jemalloc],[use jemalloc allocator])],
[with_jemalloc=$withval], [with_jemalloc=no])

AS_IF([test “x$with_jemalloc” = xyes],[

AC_SEARCH_LIBS([malloc_conf], [jemalloc],
  [AC_DEFINE(HAVE_LIBJEMALLOC, 1)], [with_jemalloc=no])
AC_CHECK_HEADER(jemalloc/jemalloc.h, [
  AC_DEFINE(RUBY_ALTERNATIVE_MALLOC_HEADER, [<jemalloc/jemalloc.h>])
])
AS_IF([test "x$with_jemalloc" = xno], [
  AC_CACHE_CHECK([for jemalloc with JEMALLOC_MANGLE], rb_cv_jemalloc_demangle,
    [AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@define JEMALLOC_MANGLE 1
    @%:@ifdef RUBY_ALTERNATIVE_MALLOC_HEADER
    @%:@include RUBY_ALTERNATIVE_MALLOC_HEADER
    @%:@else
    @%:@include <jemalloc.h>
    @%:@endif], [return !&malloc_conf])],
    [rb_cv_jemalloc_demangle=yes],
    [rb_cv_jemalloc_demangle=no])
  ])
])
AS_IF([test "x$rb_cv_jemalloc_demangle" = xyes], [
  AC_DEFINE(JEMALLOC_MANGLE)
  with_jemalloc=yes
])
AS_IF([test "x$with_jemalloc" = xyes],
  [
    ac_cv_func_malloc_usable_size=yes
  ],
  [AC_MSG_ERROR([jemalloc requested but not found])
])

])

dnl check for large file stuff mv confdefs.h confdefs1.h : > confdefs.h AC_SYS_LARGEFILE # On 32-bit Solaris, it is safe to define _LARGEFILE_SOURCE # which is not added by AC_SYS_LARGEFILE. if test x“$enable_largefile” != xno; then

AS_CASE(["$target_os"], [solaris*], [
  AC_MSG_CHECKING([wheather _LARGEFILE_SOURCE should be defined])
  AS_CASE(["${ac_cv_sys_file_offset_bits}:${ac_cv_sys_large_files}"],
    ["64:"|"64:no"|"64:unknown"], [
      # insert _LARGEFILE_SOURCE before _FILE_OFFSET_BITS line
      # that is the same order as "getconf LFS_CFLAGS" output
      mv confdefs.h largefile0.h
      : > confdefs.h
      AC_DEFINE(_LARGEFILE_SOURCE)
      cat largefile0.h >> confdefs.h
      rm largefile0.h
      AC_MSG_RESULT([yes])
    ], [AC_MSG_RESULT([no])])
])

fi mv confdefs.h largefile.h mv confdefs1.h confdefs.h cat largefile.h >> confdefs.h

AS_CASE(,

[mingw*], [ac_cv_type_off_t=yes;ac_cv_sizeof_off_t=8],
[aix*], [
AS_CASE(["$target_cpu:$ac_cv_sys_large_files"],
    [ppc64:*|powerpc64:*], [],
    [*:no|*:unknown], [],
    [
        # AIX currently does not support a 32-bit call to posix_fadvise()
        # if _LARGE_FILES is defined.
        ac_cv_func_posix_fadvise=no
    ])
])

AC_C_BIGENDIAN AC_C_CONST AC_C_CHAR_UNSIGNED AC_C_INLINE AC_C_VOLATILE AC_C_TYPEOF

AS_CASE(“:$ac_cv_c_const:$ac_cv_c_volatile:”,

[*:no:*], [AC_MSG_ERROR(ANSI C-conforming const and volatile are mandatory)])

AC_CHECK_TYPES([long long, off_t])

AC_CACHE_CHECK([char bit], [rb_cv_char_bit],

[test "$universal_binary" = yes && cross_compiling=yes
AC_COMPUTE_INT([rb_cv_char_bit], [CHAR_BIT],
    [AC_INCLUDES_DEFAULT([@%:@include <limits.h>])], [rb_cv_char_bit=8])
test "$universal_binary" = yes && cross_compiling=$real_cross_compiling])

dnl RUBY_CHECK_SIZEOF [typename], [maybe same size types], [macros], [include] AC_DEFUN(, [dnl AS_VAR_PUSHDEF(, [rbcv_sizeof_var])dnl AS_VAR_PUSHDEF(, [rbcv_sizeof_cond])dnl AS_VAR_PUSHDEF(, [rbcv_sizeof_type])dnl AS_VAR_PUSHDEF(, [rbcv_sizeof_size])dnl ] [m4_bmatch(, [.], [], [if test “$universal_binary” = yes; then]) AC_CACHE_CHECK([size of $1], [AS_TR_SH()], [

unset AS_TR_SH(ac_cv_sizeof_$1)
rbcv_var="

typedef m4_bpatsubst(, [..*]) ac__type_sizeof_; static ac__type_sizeof_ *rbcv_ptr; @%:@define AS_TR_CPP(SIZEOF_$1) sizeof((*rbcv_ptr)[]m4_bmatch(, [.], .m4_bpatsubst(, [^[^.]*.]))) “

m4_ifval([$2], [test -z "${AS_TR_SH(ac_cv_sizeof_$1)+set}" && {
for t in $2; do
    AC_COMPILE_IFELSE(
        [AC_LANG_BOOL_COMPILE_TRY(AC_INCLUDES_DEFAULT([$4]
            [$rbcv_var]),
            [AS_TR_CPP(SIZEOF_$1) == sizeof($t)])], [
            AS_TR_SH(ac_cv_sizeof_$1)=AS_TR_CPP([SIZEOF_]$t)
            break])
done
}], [
    AC_COMPUTE_INT([AS_TR_SH(ac_cv_sizeof_$1)], [AS_TR_CPP(SIZEOF_$1)],
        [AC_INCLUDES_DEFAULT([$4])

$rbcv_var],

        [AS_TR_SH(ac_cv_sizeof_$1)=])
])
unset cond
m4_ifval([$3], [test -z "${AS_TR_SH(ac_cv_sizeof_$1)+set}" && {
for s in 32 64 128; do
    for t in $3; do
        cond="${cond}

@%:@${cond+el}if defined(__${t}${s}__) || defined(__${t}${s}) || defined(_${t}${s}) || defined(${t}${s})“

hdr="AC_INCLUDES_DEFAULT([$4

@%:@if defined(__${t}${s}__) || defined(__${t}${s}) || defined(_${t}${s}) || defined(${t}${s}) @%:@ define AS_TR_CPP(HAVE_$1) 1 @%:@else @%:@ define AS_TR_CPP(HAVE_$1) 0 @%:@endif])“

AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$hdr], [!AS_TR_CPP(HAVE_$1)])], [continue])
AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$hdr]
                    [$rbcv_var],
                    [AS_TR_CPP(HAVE_$1) == (AS_TR_CPP(SIZEOF_$1) == ($s / $rb_cv_char_bit))])],
    [AS_TR_SH(ac_cv_sizeof_$1)="${AS_TR_SH(ac_cv_sizeof_$1)+${AS_TR_SH(ac_cv_sizeof_$1)-} }${t}${s}"; continue])
AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$hdr]

[ @%:@if AS_TR_CPP(HAVE_$1) $rbcv_var @%:@else @%:@define AS_TR_CPP(SIZEOF_$1) 0 @%:@endif ],

                [AS_TR_CPP(HAVE_$1) == (AS_TR_CPP(SIZEOF_$1) == (m4_bmatch([$2], [^[0-9][0-9]*$], [$2], [($s / $rb_cv_char_bit)])))])],
            [AS_TR_SH(ac_cv_sizeof_$1)="${AS_TR_SH(ac_cv_sizeof_$1)+${AS_TR_SH(ac_cv_sizeof_$1)-} }${t}${s}m4_bmatch([$2], [^[0-9][0-9]*$], [:$2])"])
    done
done
}])
test "${AS_TR_SH(ac_cv_sizeof_$1)@%:@@<:@1-9@:>@}" = "${AS_TR_SH(ac_cv_sizeof_$1)}" &&
m4_ifval([$2][$3],
    [test "${AS_TR_SH(ac_cv_sizeof_$1)@%:@SIZEOF_}" = "${AS_TR_SH(ac_cv_sizeof_$1)}" && ]){
test "$universal_binary" = yes && cross_compiling=yes
AC_COMPUTE_INT([t], AS_TR_CPP(SIZEOF_$1), [AC_INCLUDES_DEFAULT([$4])]

[${cond+$cond @%:@else} $rbcv_var ${cond+@%:@endif} @%:@ifndef AS_TR_CPP(SIZEOF_$1) @%:@define AS_TR_CPP(SIZEOF_$1) 0 @%:@endif], [t=0])

test "$universal_binary" = yes && cross_compiling=$real_cross_compiling
if test ${t-0} != 0; then
    AS_TR_SH(ac_cv_sizeof_$1)="${AS_TR_SH(ac_cv_sizeof_$1)+${AS_TR_SH(ac_cv_sizeof_$1)-} }${t}"
fi
}
: ${AS_TR_SH(ac_cv_sizeof_$1)=0}

]) {

unset cond
for t in ${AS_TR_SH(ac_cv_sizeof_$1)-}; do
    AS_CASE(["$t"],
    [[[0-9]*|SIZEOF_*]], [
        ${cond+echo "@%:@else"}
        echo "[@%:@define ]AS_TR_CPP(SIZEOF_$1) $t"
        break
        ],
    [
        s=`expr $t : ['.*[^0-9]\([0-9][0-9]*\)$']`
        AS_CASE([$t], [*:*], [t="${t%:*}"], [s=`expr $s / $rb_cv_char_bit`])
        echo "@%:@${cond+el}if defined(__${t}__) || defined(__${t}) || defined(_${t}) || defined($t)"
        echo "@%:@define AS_TR_CPP(SIZEOF_$1) $s"
        cond=1
        ])
done
${cond+echo "@%:@endif"}

} >> confdefs.h m4_bmatch(, [.], [], [else AC_CHECK_SIZEOF(, 0, [$4]) fi]) AS_VAR_POPDEF()dnl AS_VAR_POPDEF()dnl AS_VAR_POPDEF()dnl AS_VAR_POPDEF()dnl ])

RUBY_CHECK_SIZEOF(int, [], [ILP]) RUBY_CHECK_SIZEOF(short) RUBY_CHECK_SIZEOF(long, [int], [ILP LP]) RUBY_CHECK_SIZEOF(long long) RUBY_CHECK_SIZEOF(__int64, [8], [ILP LP]) RUBY_CHECK_SIZEOF(__int128, [16], [ILP LP]) RUBY_CHECK_SIZEOF(off_t) RUBY_CHECK_SIZEOF(void*, [int long “long long”], [ILP LP LLP]) RUBY_CHECK_SIZEOF(float) RUBY_CHECK_SIZEOF(double) RUBY_CHECK_SIZEOF(time_t, [long “long long”], [], [@%:@include <time.h>]) RUBY_CHECK_SIZEOF(clock_t, [], [], [@%:@include <time.h>])

AC_CACHE_CHECK(packed struct attribute, rb_cv_packed_struct,

[rb_cv_packed_struct=no
for mac in \
    "__pragma(pack(push, 1)) x __pragma(pack(pop))" \
    "x __attribute__((packed))" \
    ; do
    AC_TRY_COMPILE([@%:@define PACKED_STRUCT(x) $mac
                    PACKED_STRUCT(struct { int a; });], [],
            [rb_cv_packed_struct=$mac; break])
done])

packed_struct_unaligned=x if test “$rb_cv_packed_struct” != no; then

AC_DEFINE_UNQUOTED([PACKED_STRUCT(x)], [$rb_cv_packed_struct])

else

AC_DEFINE_UNQUOTED([PACKED_STRUCT(x)], x)

fi AC_DEFINE_UNQUOTED(PACKED_STRUCT_UNALIGNED(x), $packed_struct_unaligned)

AC_DEFUN(, [ AC_CACHE_CHECK([for printf prefix for $1], [rb_cv_pri_prefix_]AS_TR_SH($1),[

[rb_cv_pri_prefix_]AS_TR_SH($1)=[NONE]
RUBY_WERROR_FLAG(RUBY_APPEND_OPTIONS(CFLAGS, $rb_cv_wsuppress_flags)
for pri in $2; do
    AC_TRY_COMPILE(
        [@%:@include <stdio.h>
        @%:@include <stddef.h>
        @%:@ifdef __GNUC__
        @%:@define PRINTF_ARGS(decl, string_index, first_to_check) \
          decl __attribute__((format(printf, string_index, first_to_check)))
        @%:@else
        @%:@define PRINTF_ARGS(decl, string_index, first_to_check) decl
        @%:@endif
        PRINTF_ARGS(void test_sprintf(const char*, ...), 1, 2);],
        [printf("%]${pri}[d", (]$1[)42);
        test_sprintf("%]${pri}[d", (]$1[)42);],
        [rb_cv_pri_prefix_]AS_TR_SH($1)[=[$pri]; break])
done)])

if test “[$rb_cv_pri_prefix_]AS_TR_SH($1)” != NONE; then

AC_DEFINE_UNQUOTED([PRI_]m4_ifval($3,$3,AS_TR_CPP(m4_bpatsubst([$1],[_t$])))[_PREFIX],
    "[$rb_cv_pri_prefix_]AS_TR_SH($1)")

fi ])

if test “x$ac_cv_type_long_long” = xyes; then

RUBY_CHECK_PRINTF_PREFIX(long long, ll I64, LL)

elif test “x$ac_cv_type___int64” = xyes; then

RUBY_CHECK_PRINTF_PREFIX(__int64, ll I64, LL)

dnl RUBY_CHECK_SIGNEDNESS [typename] [if-signed] [if-unsigned] [included] AC_DEFUN(, [dnl

AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([AC_INCLUDES_DEFAULT([$4])], [($1)-1 > 0])],
                  [$3], [$2])])

dnl RUBY_REPLACE_TYPE [typename] [default type] [macro type] [included] AC_DEFUN(, [dnl

AC_CHECK_TYPE([$1],
              [n="patsubst([$1],["],[\\"])"],
              [n="patsubst([$2],["],[\\"])"],
              [$4])
AC_CACHE_CHECK([for convertible type of [$1]], rb_cv_[$1]_convertible, [
    u= t=
    AS_CASE(["$n "],
      [*" signed "*], [ ],
      [*" unsigned "*], [
        u=U],
      [RUBY_CHECK_SIGNEDNESS($n, [], [u=U], [$4])])
    if test x"$t" = x; then
        for t in "long long" long int short; do
            test -n "$u" && t="unsigned $t"
            AC_COMPILE_IFELSE(
                [AC_LANG_BOOL_COMPILE_TRY([AC_INCLUDES_DEFAULT([$4])]
                    [typedef $n rbcv_conftest_target_type;
                    typedef $t rbcv_conftest_replace_type;
                    extern rbcv_conftest_target_type rbcv_conftest_var;
                    extern rbcv_conftest_replace_type rbcv_conftest_var;
                    extern rbcv_conftest_target_type rbcv_conftest_func(void);
                    extern rbcv_conftest_replace_type rbcv_conftest_func(void);
                    ], [sizeof(rbcv_conftest_target_type) == sizeof(rbcv_conftest_replace_type)])],
                [n="$t"; break])
        done
    fi
    AS_CASE([" $n "],
      [*" long long "*], [
        t=LL],
      [*" long "*], [
        t=LONG],
      [
        t=INT])
    rb_cv_[$1]_convertible=${u}${t}])
if test "${AS_TR_SH(ac_cv_type_[$1])}" = "yes"; then
    n="$1"
else
    AS_CASE(["${rb_cv_[$1]_convertible}"],
            [*LL], [n="long long"],
            [*LONG], [n="long"],
            [n="int"])
    AS_CASE(["${rb_cv_[$1]_convertible}"],
            [U*], [n="unsigned $n"])
fi
AS_CASE("${rb_cv_[$1]_convertible}", [U*], [u=+1], [u=-1])
AC_DEFINE_UNQUOTED(rb_[$1], $n)
AC_DEFINE_UNQUOTED([SIGNEDNESS_OF_]AS_TR_CPP($1), $u)
AC_DEFINE_UNQUOTED([$3]2NUM[(v)], [${rb_cv_[$1]_convertible}2NUM(v)])
AC_DEFINE_UNQUOTED(NUM2[$3][(v)], [NUM2${rb_cv_[$1]_convertible}(v)])
AC_DEFINE_UNQUOTED(PRI_[$3]_PREFIX,
    [PRI_`echo ${rb_cv_[$1]_convertible} | sed ['s/^U//']`_PREFIX])

]) RUBY_REPLACE_TYPE(pid_t, int, PIDT) RUBY_REPLACE_TYPE(uid_t, int, UIDT) RUBY_REPLACE_TYPE(gid_t, int, GIDT) RUBY_REPLACE_TYPE(time_t, [], TIMET, [@%:@include <time.h>]) RUBY_REPLACE_TYPE(dev_t, [int long “long long”], DEVT) RUBY_REPLACE_TYPE(mode_t, [“unsigned int” long], MODET, [@%:@include <sys/stat.h>]) RUBY_REPLACE_TYPE(rlim_t, [int long “long long”], RLIM, [ @%:@ifdef HAVE_SYS_TYPES_H @%:@include <sys/types.h> @%:@endif @%:@ifdef HAVE_SYS_TYPES_H @%:@include <sys/time.h> @%:@endif @%:@include <sys/resource.h> ]) RUBY_REPLACE_TYPE(off_t, [], OFFT) RUBY_REPLACE_TYPE(clockid_t, [], CLOCKID)

AC_CACHE_CHECK(for prototypes, rb_cv_have_prototypes,

[AC_TRY_COMPILE([int foo(int x) { return 0; }], [return foo(10);],
      rb_cv_have_prototypes=yes,
      rb_cv_have_prototypes=no)])

if test “$rb_cv_have_prototypes” = yes; then

AC_DEFINE(HAVE_PROTOTYPES)

AC_CACHE_CHECK(token paste string, rb_cv_tokenpaste,

[AC_TRY_COMPILE([@%:@define paste(a,b) a@%:@@%:@b],
                [int xy = 1; return paste(x,y);],
                rb_cv_tokenpaste=ansi,
                rb_cv_tokenpaste=knr)])

if test “$rb_cv_tokenpaste” = ansi; then

AC_DEFINE(TOKEN_PASTE(x,y),[x@%:@@%:@y])

else

AC_DEFINE(TOKEN_PASTE(x,y),[x/**/y])

AC_CACHE_CHECK(stringization, rb_cv_stringization, [

rb_cv_stringization=no
for string in "#expr" '"expr"'; do
  AC_COMPILE_IFELSE([
    AC_LANG_BOOL_COMPILE_TRY([

define STRINGIZE0(expr) $string define STRINGIZE(expr) STRINGIZE0(expr) undef real_test_for_stringization define test_for_stringization -.real_test_for_stringization.- const char stringized[] = STRINGIZE(test_for_stringization); ], [sizeof(stringized) == 32])],

    [rb_cv_stringization="$string"; break],
    [rb_cv_stringization=no])
done]

) AC_DEFINE(STRINGIZE(expr),STRINGIZE0(expr)) if test x“$rb_cv_stringization” != xno -a “$rb_cv_stringization” != “#expr”; then

AC_DEFINE_UNQUOTED(STRINGIZE0(expr),$rb_cv_stringization)
AC_DEFINE(OLD_FASHIONED_STRINGIZATION,1)

AC_CACHE_CHECK([string literal concatenation],

rb_cv_string_literal_concatenation, [
AC_COMPILE_IFELSE([
  AC_LANG_BOOL_COMPILE_TRY([

const char concatenated_literal[] = “literals” “to”

"be" "concatenated.";

], [sizeof(concatenated_literal) == 26])],

[rb_cv_string_literal_concatenation=yes],
[rb_cv_string_literal_concatenation=no])]

) if test “$rb_cv_string_literal_concatenation” = no; then

AC_DEFINE(NO_STRING_LITERAL_CONCATENATION,1)

AC_CACHE_CHECK(for variable length prototypes and stdarg.h, rb_cv_stdarg,

[AC_TRY_COMPILE([

include <stdarg.h> int foo(int x, …) {

va_list va;
va_start(va, x);
va_arg(va, int);
va_arg(va, char *);
va_arg(va, double);
return 0;

} ], [return foo(10, “”, 3.14);],

rb_cv_stdarg=yes,
rb_cv_stdarg=no)])

if test “$rb_cv_stdarg” = yes; then

AC_DEFINE(HAVE_STDARG_PROTOTYPES)

AC_CACHE_CHECK(for variable length macro, rb_cv_va_args_macro,

[AC_TRY_COMPILE([

int foo(int x, …); @%:@define FOO(a, …) foo(a, @%:@@%:@VA_ARGS) ], [FOO(1);FOO(1,2);FOO(1,2,3);],

rb_cv_va_args_macro=yes,
rb_cv_va_args_macro=no)])

if test “$rb_cv_va_args_macro” = yes; then

AC_DEFINE(HAVE_VA_ARGS_MACRO)

AC_DEFUN(, [dnl

m4_ifval([$1], [AS_LITERAL_IF([$1], [], [test "X$1" = X || ])cat <<EOH >> confdefs.h

@%:@if $1 EOH ])dnl AC_DEFINE_UNQUOTED($2, $3)dnl

m4_ifval([$1], [AS_LITERAL_IF([$1], [], [test "X$1" = X || ])cat <<EOH >> confdefs.h

@%:@endif /* $1 */ EOH ])dnl ])dnl

dnl RUBY_DECL_ATTRIBUTE(attrib, macroname, cachevar, condition, type, code) AC_DEFUN(, [dnl m4_ifval(, dnl

[AS_VAR_PUSHDEF([attrib], m4_bpatsubst([$2], [(.*)], []))], dnl
[AS_VAR_PUSHDEF([attrib], m4_toupper(m4_format(%.4s, [$5]))[_]AS_TR_CPP($1))] dnl

)dnl m4_ifval(, dnl

[AS_VAR_PUSHDEF([rbcv],[$3])], dnl
[AS_VAR_PUSHDEF([rbcv],[rb_cv_]m4_format(%.4s, [$5])[_][$1])]dnl

)dnl m4_pushdef(,[m4_bpatsubst(,[“],[\”])])dnl m4_pushdef(,[m4_bpatsubst(,[^[^()]*(([^()]*)).*],[1])])dnl m4_ifval(, [rbcv_cond=; test “$rbcv_cond” || unset rbcv_cond]) AC_CACHE_CHECK(for m4_ifval(,[m4_bpatsubst(, [(.*)], [])],[$1]) [$5] attribute, rbcv, dnl [rbcv=x RUBY_WERROR_FLAG([ for mac in \

  "__attribute__ ((attrib_code)) x" \
  "x __attribute__ ((attrib_code))" \
  "__declspec(attrib_code) x" \
  x; do
m4_ifval([$4],mac="$mac"${rbcv_cond+" /* only if $rbcv_cond */"})
AC_TRY_COMPILE(
  m4_ifval([$4],${rbcv_cond+[@%:@if ]$rbcv_cond})

@%:@define ]attrib[](attrib_params)[ $mac

m4_ifval(,${rbcv_cond+} ${rbcv_cond+[@%:@define ]attrib[](attrib_params)[ x]} ${rbcv_cond+}) $6 @%:@define mesg (“”)

attrib[](attrib_params)[;], [],
[rbcv="$mac"; break])

done ])]) if test “$rbcv” != x; then

RUBY_DEFINE_IF(m4_ifval([$4],[${rbcv_cond}]), attrib[](attrib_params)[], $rbcv)

fi m4_ifval(, [unset rbcv_cond]) dnl m4_popdef()dnl m4_popdef()dnl AS_VAR_POPDEF()dnl AS_VAR_POPDEF()dnl ])

dnl RUBY_FUNC_ATTRIBUTE(attrib, macroname, cachevar, condition) AC_DEFUN(, [dnl

RUBY_DECL_ATTRIBUTE([$1], [$2], [$3], [$4],
    [function], [@%:@define x int conftest_attribute_check(void)]
)

])

dnl RUBY_TYPE_ATTRIBUTE(attrib, macroname, cachevar, condition) AC_DEFUN(, [dnl

RUBY_DECL_ATTRIBUTE([$1], [$2], [$3], [$4],
    [type], [

@%:@define x struct conftest_attribute_check {int i;} ]) ])

RUBY_FUNC_ATTRIBUTE(__const__, CONSTFUNC) RUBY_FUNC_ATTRIBUTE(__pure__, PUREFUNC) RUBY_FUNC_ATTRIBUTE(__noreturn__, NORETURN) RUBY_FUNC_ATTRIBUTE(__deprecated__, DEPRECATED) RUBY_FUNC_ATTRIBUTE(__deprecated__(“by ”@%:@n), DEPRECATED_BY(n,x), rb_cv_func_deprecated_by) RUBY_TYPE_ATTRIBUTE(__deprecated__ mesg, DEPRECATED_TYPE(mesg,x), rb_cv_type_deprecated) RUBY_FUNC_ATTRIBUTE(__noinline__, NOINLINE) RUBY_FUNC_ATTRIBUTE(always_inline, ALWAYS_INLINE) RUBY_FUNC_ATTRIBUTE(warn_unused_result, WARN_UNUSED_RESULT) RUBY_FUNC_ATTRIBUTE(__unused__, MAYBE_UNUSED) RUBY_FUNC_ATTRIBUTE(__error__ mesg, ERRORFUNC(mesg,x), rb_cv_func___error__) RUBY_FUNC_ATTRIBUTE(__warning__ mesg, WARNINGFUNC(mesg,x), rb_cv_func___warning__) RUBY_FUNC_ATTRIBUTE(__weak__, WEAK, rb_cv_func_weak) if test “$rb_cv_func_weak” != x; then

AC_DEFINE(HAVE_FUNC_WEAK)

if_i386=${universal_binary+[defined i386]} RUBY_FUNC_ATTRIBUTE(__stdcall__, FUNC_STDCALL, rb_cv_func_stdcall, ${if_i386}) RUBY_FUNC_ATTRIBUTE(__cdecl__, FUNC_CDECL, rb_cv_func_cdecl, ${if_i386}) RUBY_FUNC_ATTRIBUTE(__fastcall__, FUNC_FASTCALL, rb_cv_func_fastcall, ${if_i386}) RUBY_FUNC_ATTRIBUTE(__optimize__(“O0”), FUNC_UNOPTIMIZED, rb_cv_func_unoptimized) RUBY_FUNC_ATTRIBUTE(__optimize__(“-Os”,“-fomit-frame-pointer”), FUNC_MINIMIZED, rb_cv_func_minimized)

if test “$GCC” = yes; then

AC_CACHE_CHECK([for function alias], [rb_cv_gcc_function_alias],
    [rb_cv_gcc_function_alias=no
    for a in alias weak,alias; do
        AC_TRY_LINK([void foo(void) {}
            void bar(void) __attribute__(($a("foo")));], [bar()],
            [rb_cv_gcc_function_alias=$a; break])
    done])
if test "$rb_cv_gcc_function_alias" != no; then
    AC_DEFINE(HAVE_ATTRIBUTE_FUNCTION_ALIAS)
    AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_TYPE(type, prot, name, args)],
                       [type prot __attribute__(($rb_cv_gcc_function_alias(@%:@name)));])
    AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_VOID(prot, name, args)],
                       [RUBY_ALIAS_FUNCTION_TYPE(void, prot, name, args)])
fi

AC_CACHE_CHECK([for __atomic builtins], [rb_cv_gcc_atomic_builtins], [
    AC_TRY_LINK([unsigned char atomic_var;],
                [
                    __atomic_exchange_n(&atomic_var, 0, __ATOMIC_SEQ_CST);
                    __atomic_exchange_n(&atomic_var, 1, __ATOMIC_SEQ_CST);
                    __atomic_fetch_add(&atomic_var, 1, __ATOMIC_SEQ_CST);
                    __atomic_fetch_sub(&atomic_var, 1, __ATOMIC_SEQ_CST);
                    __atomic_or_fetch(&atomic_var, 1, __ATOMIC_SEQ_CST);
                ],
                [rb_cv_gcc_atomic_builtins=yes],
                [rb_cv_gcc_atomic_builtins=no])])
if test "$rb_cv_gcc_atomic_builtins" = yes; then
    AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS)
fi

AC_CACHE_CHECK([for __sync builtins], [rb_cv_gcc_sync_builtins], [
    AC_TRY_LINK([unsigned char atomic_var;],
                [
                    __sync_lock_test_and_set(&atomic_var, 0);
                    __sync_lock_test_and_set(&atomic_var, 1);
                    __sync_fetch_and_add(&atomic_var, 1);
                    __sync_fetch_and_sub(&atomic_var, 1);
                    __sync_or_and_fetch(&atomic_var, 1);
                    __sync_val_compare_and_swap(&atomic_var, 0, 1);
                ],
                [rb_cv_gcc_sync_builtins=yes],
                [rb_cv_gcc_sync_builtins=no])])
if test "$rb_cv_gcc_sync_builtins" = yes; then
    AC_DEFINE(HAVE_GCC_SYNC_BUILTINS)
fi

AC_CACHE_CHECK(for __builtin_unreachable, rb_cv_func___builtin_unreachable,
[RUBY_WERROR_FLAG(
[AC_TRY_LINK([volatile int zero;],
    [if (zero) __builtin_unreachable();],
    [rb_cv_func___builtin_unreachable=yes],
    [rb_cv_func___builtin_unreachable=no])
])
])
if test "$rb_cv_func___builtin_unreachable" = yes; then
    AC_DEFINE_UNQUOTED(UNREACHABLE, [__builtin_unreachable()])
fi

AC_CACHE_CHECK(for exported function attribute, rb_cv_func_exported, [ rb_cv_func_exported=no RUBY_WERROR_FLAG([ for mac in '__attribute__ ((__visibility__(“default”)))' '__declspec(dllexport)'; do

AC_TRY_COMPILE([@%:@define RUBY_FUNC_EXPORTED $mac extern
  RUBY_FUNC_EXPORTED void conftest_attribute_check(void);], [],
  [rb_cv_func_exported="$mac"; break])

done ])]) if test “$rb_cv_func_exported” != no; then

AC_DEFINE_UNQUOTED(RUBY_FUNC_EXPORTED, [$rb_cv_func_exported extern])

RUBY_APPEND_OPTION(XCFLAGS, -DRUBY_EXPORT)

AC_CACHE_CHECK(for function name string predefined identifier,

rb_cv_function_name_string,
[rb_cv_function_name_string=no
RUBY_WERROR_FLAG([
    for func in __func__ __FUNCTION__; do
        AC_TRY_LINK([@%:@include <stdio.h>],
                    [puts($func);],
                    [rb_cv_function_name_string=$func
                    break])
    done
])]

) if test “$rb_cv_function_name_string” != no; then

AC_DEFINE_UNQUOTED(RUBY_FUNCTION_NAME_STRING, [$rb_cv_function_name_string])

AC_CACHE_CHECK(if enum over int is allowed, rb_cv_enum_over_int, [

rb_cv_enum_over_int=no
if test "x$ac_cv_type_long_long" = xyes; then
    type="unsigned long long" max="ULLONG_MAX"
else
    type="unsigned long" max="ULONG_MAX"
fi
RUBY_WERROR_FLAG([
    AC_COMPILE_IFELSE([
        AC_LANG_BOOL_COMPILE_TRY([
                @%:@include <limits.h>
                enum {conftest_max = $max};
            ], [
                (conftest_max == $max) &&
                (sizeof(conftest_max) == sizeof($type))
            ]
        )],
        [rb_cv_enum_over_int=yes],
        [rb_cv_enum_over_int=no]
    )
])

]) if test $rb_cv_enum_over_int = yes; then

AC_DEFINE(ENUM_OVER_INT, 1)

dnl Check whether we need to define sys_nerr locally AC_CHECK_DECLS(, [], [], [$ac_includes_default @%:@include <errno.h>])

AC_CHECK_DECLS()

AS_CASE(, [alpha*|sh4|sh4el|sh4eb], [AS_CASE(,

[*::yes],  # gcc
        [CFLAGS="-mieee $CFLAGS"],
[osf*],    # ccc
        [CFLAGS="-ieee $CFLAGS"],
)],

[sparc*], [AC_LIBOBJ()])

ac_cv_header_net_socket_h=${ac_cv_header_net_socket_h=no} if test “$ac_cv_header_net_socket_h” = yes; then

ac_cv_header_sys_socket_h=${ac_cv_header_sys_socket_h=no}

else

ac_cv_header_sys_socket_h=${ac_cv_header_sys_socket_h=yes}

AC_TYPE_SIZE_T RUBY_CHECK_SIGNEDNESS(size_t, [AC_MSG_ERROR(size_t is signed)], [],

[@%:@include <sys/types.h>])

RUBY_CHECK_SIZEOF(size_t, [int long void*], [], [@%:@include <sys/types.h>]) RUBY_CHECK_SIZEOF(ptrdiff_t, size_t, [], [@%:@include <stddef.h>]) RUBY_CHECK_PRINTF_PREFIX(size_t, z) RUBY_CHECK_PRINTF_PREFIX(ptrdiff_t, t) AC_STRUCT_ST_BLKSIZE AC_STRUCT_ST_BLOCKS AC_STRUCT_ST_RDEV RUBY_CHECK_SIZEOF([struct stat.st_size], [off_t int long “long long”], [], [@%:@include <sys/stat.h>]) if test “$ac_cv_member_struct_stat_st_blocks” = yes; then

RUBY_CHECK_SIZEOF([struct stat.st_blocks], [off_t int long "long long"], [], [@%:@include <sys/stat.h>])

fi RUBY_CHECK_SIZEOF([struct stat.st_ino], [long “long long”], [], [@%:@include <sys/stat.h>]) AC_CHECK_MEMBERS([struct stat.st_atim]) AC_CHECK_MEMBERS([struct stat.st_atimespec]) AC_CHECK_MEMBERS([struct stat.st_atimensec]) AC_CHECK_MEMBERS([struct stat.st_mtim]) AC_CHECK_MEMBERS([struct stat.st_mtimespec]) AC_CHECK_MEMBERS([struct stat.st_mtimensec]) AC_CHECK_MEMBERS([struct stat.st_ctim]) AC_CHECK_MEMBERS([struct stat.st_ctimespec]) AC_CHECK_MEMBERS([struct stat.st_ctimensec]) AC_CHECK_MEMBERS([struct stat.st_birthtimespec])

AC_CHECK_TYPES([struct timeval], [], [], [@%:@ifdef HAVE_TIME_H @%:@include <time.h> @%:@endif @%:@ifdef HAVE_SYS_TIME_H @%:@include <sys/time.h> @%:@endif])

if test “${ac_cv_type_struct_timeval}” = yes; then

RUBY_CHECK_SIZEOF([struct timeval.tv_sec], [time_t long "long long"], [],
                  [@%:@ifdef HAVE_TIME_H

@%:@include <time.h> @%:@endif @%:@ifdef HAVE_SYS_TIME_H @%:@include <sys/time.h> @%:@endif])

AS_CASE(${ac_cv_sizeof_struct_timeval_tv_sec},
        [SIZEOF_INT], [t=int],
        [SIZEOF_LONG], [t=long],
        [SIZEOF_LONG_LONG], [t=LONG_LONG],
        [t=])
if test "${t}" != ""; then
    AC_DEFINE_UNQUOTED(TYPEOF_TIMEVAL_TV_SEC, [$t])
fi

AC_CHECK_TYPES([struct timespec], [], [], [@%:@ifdef HAVE_TIME_H @%:@include <time.h> @%:@endif @%:@ifdef HAVE_SYS_TIME_H @%:@include <sys/time.h> @%:@endif])

AC_CHECK_TYPES([struct timezone], [], [], [@%:@ifdef HAVE_TIME_H @%:@ include <time.h> @%:@endif @%:@ifdef HAVE_SYS_TIME_H @%:@ include <sys/time.h> @%:@endif])

AC_CHECK_TYPES(, [], [], [@%:@ifdef HAVE_TIME_H @%:@ include <time.h> @%:@endif @%:@ifdef HAVE_SYS_TIME_H @%:@ include <sys/time.h> @%:@endif])

AC_CACHE_VAL(,

[AC_CHECK_TYPE(fd_mask, [rb_cv_large_fd_select=yes], [rb_cv_large_fd_select=no])])

if test “$rb_cv_large_fd_select” = yes; then

AC_DEFINE(HAVE_RB_FD_INIT, 1)

dnl RUBY_DEFINT TYPENAME, SIZE, [UNSIGNED], [INCLUDES = DEFAULT-INCLUDES] AC_DEFUN(, [dnl AS_VAR_PUSHDEF(, [rb_defint_cond])dnl AS_VAR_PUSHDEF(, [rb_defint_type])dnl AC_CACHE_CHECK([for $1], [rb_cv_type_$1], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT() typedef $1 t; int s = sizeof(t) == 42;])],

[rb_cv_type_$1=yes],
[AS_CASE([m4_bmatch([$2], [^[1-9][0-9]*$], $2, [$ac_cv_sizeof_]AS_TR_SH($2))],
 ["1"], [ rb_cv_type_$1="m4_if([$3], [], [signed ], [$3 ])char"],
 ["$ac_cv_sizeof_short"], [ rb_cv_type_$1="m4_if([$3], [], [], [$3 ])short"],
 ["$ac_cv_sizeof_int"], [ rb_cv_type_$1="m4_if([$3], [], [], [$3 ])int"],
 ["$ac_cv_sizeof_long"], [ rb_cv_type_$1="m4_if([$3], [], [], [$3 ])long"],
 ["$ac_cv_sizeof_long_long"], [ rb_cv_type_$1="m4_if([$3], [], [], [$3 ])long long"],
 ["${ac_cv_sizeof___int64@%:@*:}"], [ rb_cv_type_$1="m4_if([$3], [], [], [$3 ])__int64"],
 ["${ac_cv_sizeof___int128@%:@*:}"], [ rb_cv_type_$1="m4_if([$3], [], [], [$3 ])__int128"],
 [ rb_cv_type_$1=no])])])

if test “${rb_cv_type_$1}” != no; then

type="${rb_cv_type_$1@%:@@%:@unsigned }"
AS_IF([test "$type" != yes && eval 'test -n "${ac_cv_sizeof_'$type'+set}"'], [
    eval cond='"${ac_cv_sizeof_'$type'}"'
    AS_CASE([$cond], [*:*], [
        cond=AS_TR_CPP($type)
        echo "@%:@if defined SIZEOF_"$cond" && SIZEOF_"$cond" > 0" >> confdefs.h
    ], [cond=])
], [cond=])
AC_DEFINE([HAVE_]AS_TR_CPP($1), 1)
if test "${rb_cv_type_$1}" = yes; then
    m4_bmatch([$2], [^[1-9][0-9]*$], [AC_CHECK_SIZEOF([$1], 0, [AC_INCLUDES_DEFAULT([$4])])],
                    [RUBY_CHECK_SIZEOF([$1], [$2], [], [AC_INCLUDES_DEFAULT([$4])])])
else
    AC_DEFINE_UNQUOTED($1, [$rb_cv_type_$1])
    AC_DEFINE_UNQUOTED([SIZEOF_]AS_TR_CPP($1), [SIZEOF_]AS_TR_CPP([$type]))
fi
test -n "$cond" && echo "@%:@endif /* $cond */" >> confdefs.h

fi AS_VAR_POPDEF()dnl AS_VAR_POPDEF()dnl ])

RUBY_DEFINT(int8_t, 1) RUBY_DEFINT(uint8_t, 1, unsigned) RUBY_DEFINT(int16_t, 2) RUBY_DEFINT(uint16_t, 2, unsigned) RUBY_DEFINT(int32_t, 4) RUBY_DEFINT(uint32_t, 4, unsigned) RUBY_DEFINT(int64_t, 8) RUBY_DEFINT(uint64_t, 8, unsigned) RUBY_DEFINT(int128_t, 16) RUBY_DEFINT(uint128_t, 16, unsigned) RUBY_DEFINT(intptr_t, void*) RUBY_DEFINT(uintptr_t, void*, unsigned) RUBY_DEFINT(ssize_t, size_t, [], [@%:@include <sys/types.h>]) dnl may differ from int, so not use AC_TYPE_SSIZE_T.

RUBY_NACL_CHECK_PEPPER_TYPES

AC_CACHE_CHECK(for stack end address, rb_cv_stack_end_address, [rb_cv_stack_end_address=no

AC_TRY_LINK(
  [extern void *__libc_stack_end;],
  [if (!__libc_stack_end) return 1;],
  [rb_cv_stack_end_address="__libc_stack_end"])

]) if test $rb_cv_stack_end_address != no; then

AC_DEFINE_UNQUOTED(STACK_END_ADDRESS, $rb_cv_stack_end_address)

# posix_memalign(memptr, alignment, size) implemented for OpenBSD 4.8 doesn't work if alignment > MALLOC_PAGESIZE. # [ruby-core:42158] bugs.ruby-lang.org/issues/5901 # OpenBSD 5.2 fixed the problem. (src/lib/libc/stdlib/malloc.c:1.142) # MirOS #10semel has the problem but fixed in the repository. (src/lib/libc/stdlib/malloc.c:1.9) AS_CASE(, [openbsd*|mirbsd*], [

AC_CACHE_CHECK(for heap align log on openbsd, rb_cv_page_size_log,
  [rb_cv_page_size_log=no
   for page_log in 12 13; do
     AC_TRY_RUN([

include <math.h> include <unistd.h>

int main() {

if ((int)log2((double)sysconf(_SC_PAGESIZE)) != $page_log) return 1;
return 0;

}

     ],
     rb_cv_page_size_log="$page_log"; break)
   done])
if test $rb_cv_page_size_log != no; then
  AC_DEFINE_UNQUOTED(HEAP_ALIGN_LOG, $rb_cv_page_size_log)
else
  AC_DEFINE_UNQUOTED(HEAP_ALIGN_LOG, 12)
fi

])

dnl Checks for library functions. AC_TYPE_GETGROUPS AC_TYPE_SIGNAL AS_CASE(, [powerpc-darwin*], [

AC_LIBSOURCES(alloca.c)
AC_SUBST([ALLOCA], [\${LIBOBJDIR}alloca.${ac_objext}])
AC_DEFINE(C_ALLOCA)
AC_DEFINE_UNQUOTED(alloca, alloca)
],

[universal-darwin*:ppc], [

AC_LIBSOURCES(alloca.c)
AC_SUBST([ALLOCA], [\${LIBOBJDIR}alloca.${ac_objext}])
RUBY_DEFINE_IF([defined __powerpc__], C_ALLOCA, 1)
RUBY_DEFINE_IF([defined __powerpc__], alloca, alloca)
],

[

AC_FUNC_ALLOCA
])

if test “x$ALLOCA” = “x”; then

AC_CACHE_CHECK([for dynamic size alloca], rb_cv_dynamic_alloca, [
for chk in ok __chkstk; do
    AC_TRY_LINK([
        @%:@ifdef HAVE_ALLOCA_H
        @%:@include <alloca.h>
        @%:@endif
        void $chk() {}
        int dynamic_alloca_test;
        int dynamic_alloca_result;],
        [dynamic_alloca_result = alloca(dynamic_alloca_test) != 0;],
        [rb_cv_dynamic_alloca=$chk; break])
done])
if test "x$rb_cv_dynamic_alloca" = "x__chkstk"; then
    AC_DEFINE_UNQUOTED(RUBY_ALLOCA_CHKSTK, _$rb_cv_dynamic_alloca)
    AS_CASE("$target_cpu",
    [x64|x86_64], [
        AC_SUBST([ALLOCA], [\${LIBOBJDIR}x86_64-chkstk.${ac_objext}])
    ],)
fi

fi AC_FUNC_MEMCMP

# sources.redhat.com/ml/libc-hacker/2005-08/msg00008.html # Debian GNU/Linux Etch's libc6.1 2.3.6.ds1-13etch5 has this problem. # Debian GNU/Linux Lenny's libc6.1 2.7-10 has no problem. AC_CACHE_CHECK(for broken erfc of glibc-2.3.6 on IA64, rb_cv_broken_glibc_ia64_erfc,

[AC_TRY_RUN([

include <math.h> int main() {

erfc(10000.0);
return 0;

} ],

rb_cv_broken_glibc_ia64_erfc=no,
rb_cv_broken_glibc_ia64_erfc=yes,
rb_cv_broken_glibc_ia64_erfc=no)])

AS_CASE(,[yes],)

AS_CASE(,[freebsd*],[

AC_DEFINE(BROKEN_CLOSE)
AC_REPLACE_FUNCS(close)
])

AC_REPLACE_FUNCS(acosh) AC_REPLACE_FUNCS(cbrt) AC_REPLACE_FUNCS(crypt) AC_REPLACE_FUNCS(dup2) AC_REPLACE_FUNCS(erf) AC_REPLACE_FUNCS(explicit_bzero) AC_REPLACE_FUNCS(ffs) AC_REPLACE_FUNCS(finite) AC_REPLACE_FUNCS(flock) AC_REPLACE_FUNCS(hypot) AC_REPLACE_FUNCS(isinf) AC_REPLACE_FUNCS(isnan) AC_REPLACE_FUNCS(lgamma_r) AC_REPLACE_FUNCS(memmove) AC_REPLACE_FUNCS(nextafter) AC_REPLACE_FUNCS(setproctitle) AC_REPLACE_FUNCS(strchr) AC_REPLACE_FUNCS(strerror) AC_REPLACE_FUNCS(strlcat) AC_REPLACE_FUNCS(strlcpy) AC_REPLACE_FUNCS(strstr) AC_REPLACE_FUNCS(tgamma)

# for missing/setproctitle.c AS_CASE(, [aix* | k*bsd*-gnu | kopensolaris*-gnu | linux* | darwin*], [AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)], [hpux*], [AC_DEFINE(SPT_TYPE,SPT_PSTAT) ], []) AC_CHECK_HEADERS(sys/pstat.h)

AC_CACHE_CHECK(for signbit, rb_cv_have_signbit,

[AC_TRY_LINK([

include <math.h> ], [int v = signbit(-0.0);],

rb_cv_have_signbit=yes,
rb_cv_have_signbit=no)])

if test “$rb_cv_have_signbit” = yes; then

AC_DEFINE(HAVE_SIGNBIT)

else

AC_LIBOBJ([signbit])

AC_CACHE_CHECK(for broken memmem, rb_cv_broken_memmem, [

AC_TRY_RUN([

@%:@include <string.h>

int main(int argc, char **argv) {

const char *str = "hogefugafoobar";
const char *rs = "foo";
const char *empty = "";
char *p;

p = memmem(str, strlen(str), rs, strlen(rs));
if (p == str+8) {
    p = memmem(str, strlen(str), empty, strlen(empty));
    if (p == str)
        return 0;
}
return 1;

}

],
rb_cv_broken_memmem=no,
rb_cv_broken_memmem=yes,
rb_cv_broken_memmem=yes)

]) test x“$rb_cv_broken_memmem” = xyes && ac_cv_func_memmem=no

AC_FUNC_FORK

AC_CHECK_FUNCS(__syscall) AC_CHECK_FUNCS(_longjmp) # used for AC_ARG_WITH(setjmp-type) # we don't use _setjmp if _longjmp doesn't exist. test x$ac_cv_func__longjmp = xno && ac_cv_func__setjmp=no AC_CHECK_FUNCS(arc4random_buf) AC_CHECK_FUNCS(atan2l atan2f) AC_CHECK_FUNCS(chroot) AC_CHECK_FUNCS(chsize) AC_CHECK_FUNCS(clock_gettime) AC_CHECK_FUNCS(cosh) AC_CHECK_FUNCS(crypt_r) AC_CHECK_FUNCS(daemon) AC_CHECK_FUNCS(dirfd) AC_CHECK_FUNCS(dl_iterate_phdr) AC_CHECK_FUNCS(dlopen) AC_CHECK_FUNCS(dladdr) AC_CHECK_FUNCS(dup) AC_CHECK_FUNCS(dup3) AC_CHECK_FUNCS(eaccess) AC_CHECK_FUNCS(endgrent) AC_CHECK_FUNCS(fchmod) AC_CHECK_FUNCS(fchown) AC_CHECK_FUNCS(fcntl) AC_CHECK_FUNCS(fdatasync) AC_CHECK_FUNCS(fgetattrlist) AC_CHECK_FUNCS(fmod) AC_CHECK_FUNCS(fsync) AC_CHECK_FUNCS(ftruncate) AC_CHECK_FUNCS(ftruncate64) # used for Win32 platform AC_CHECK_FUNCS(getattrlist) AC_CHECK_FUNCS(getcwd) AC_CHECK_FUNCS(getgidx) AC_CHECK_FUNCS(getgrnam) AC_CHECK_FUNCS(getgrnam_r) AC_CHECK_FUNCS(getgroups) AC_CHECK_FUNCS(getpgid) AC_CHECK_FUNCS(getpgrp) AC_CHECK_FUNCS(getpriority) AC_CHECK_FUNCS(getpwnam_r) AC_CHECK_FUNCS(getresgid) AC_CHECK_FUNCS(getresuid) AC_CHECK_FUNCS(getrlimit) AC_CHECK_FUNCS(getsid) AC_CHECK_FUNCS(gettimeofday) # for making ac_cv_func_gettimeofday AC_CHECK_FUNCS(getuidx) AC_CHECK_FUNCS(gmtime_r) AC_CHECK_FUNCS(initgroups) AC_CHECK_FUNCS(ioctl) AC_CHECK_FUNCS(isfinite) AC_CHECK_FUNCS(issetugid) AC_CHECK_FUNCS(killpg) AC_CHECK_FUNCS(lchmod) AC_CHECK_FUNCS(lchown) AC_CHECK_FUNCS(link) AC_CHECK_FUNCS(llabs) AC_CHECK_FUNCS(lockf) AC_CHECK_FUNCS(log2) AC_CHECK_FUNCS(lstat) AC_CHECK_FUNCS(malloc_usable_size) AC_CHECK_FUNCS(malloc_size) AC_CHECK_FUNCS(mblen) AC_CHECK_FUNCS(memalign) AC_CHECK_FUNCS(memset_s) AC_CHECK_FUNCS(writev) AC_CHECK_FUNCS(memrchr) AC_CHECK_FUNCS(memmem) AC_CHECK_FUNCS(mkfifo) AC_CHECK_FUNCS(mknod) AC_CHECK_FUNCS(mktime) AC_CHECK_FUNCS(pipe2) AC_CHECK_FUNCS(poll) AC_CHECK_FUNCS(posix_fadvise) AC_CHECK_FUNCS(posix_memalign) AC_CHECK_FUNCS(ppoll) AC_CHECK_FUNCS(pread) AC_CHECK_FUNCS(qsort_r) AC_CHECK_FUNCS(qsort_s) AC_CHECK_FUNCS(readlink) AC_CHECK_FUNCS(round) AC_CHECK_FUNCS(sched_getaffinity) AC_CHECK_FUNCS(seekdir) AC_CHECK_FUNCS(select_large_fdset) AC_CHECK_FUNCS(sendfile) AC_CHECK_FUNCS(setegid) AC_CHECK_FUNCS(setenv) AC_CHECK_FUNCS(seteuid) AC_CHECK_FUNCS(setgid) AC_CHECK_FUNCS(setgroups) AC_CHECK_FUNCS(setpgid) AC_CHECK_FUNCS(setpgrp) AC_CHECK_FUNCS(setregid) AC_CHECK_FUNCS(setresgid) AC_CHECK_FUNCS(setresuid) AC_CHECK_FUNCS(setreuid) AC_CHECK_FUNCS(setrgid) AC_CHECK_FUNCS(setrlimit) AC_CHECK_FUNCS(setruid) AC_CHECK_FUNCS(setsid) AC_CHECK_FUNCS(setuid) AC_CHECK_FUNCS(shutdown) AC_CHECK_FUNCS(sigaction) AC_CHECK_FUNCS(sigaltstack) AC_CHECK_FUNCS(sigprocmask) AC_CHECK_FUNCS(sinh) AC_CHECK_FUNCS(spawnv) AC_CHECK_FUNCS(symlink) AC_CHECK_FUNCS(syscall) AC_CHECK_FUNCS(sysconf) AC_CHECK_FUNCS(tanh) AC_CHECK_FUNCS(telldir) AC_CHECK_FUNCS(timegm) AC_CHECK_FUNCS(times) AC_CHECK_FUNCS(truncate) AC_CHECK_FUNCS(truncate64) # used for Win32 AC_CHECK_FUNCS(unsetenv) AC_CHECK_FUNCS(utimensat) AC_CHECK_FUNCS(utimes) AC_CHECK_FUNCS(wait4) AC_CHECK_FUNCS(waitpid)

AS_IF([test “$ac_cv_func_memset_s” = yes],

[RUBY_DEFINE_IF([!defined __STDC_WANT_LIB_EXT1__], [__STDC_WANT_LIB_EXT1__], 1)])

AS_IF([test “$ac_cv_func_getcwd” = yes], [

AC_CACHE_CHECK(if getcwd allocates buffer if NULL is given, [rb_cv_getcwd_malloc],
    [AC_TRY_RUN([

@%:@include <stddef.h> @%:@include <stdio.h> @%:@ifdef HAVE_UNISTD_H @%:@include <unistd.h> @%:@endif @%:@ifndef EXIT_SUCCESS @%:@define EXIT_SUCCESS 0 @%:@endif @%:@ifndef EXIT_FAILURE @%:@define EXIT_FAILURE 1 @%:@endif

int main(int argc, char **argv) {

if (!getcwd(NULL, 0)) return EXIT_FAILURE;
return EXIT_SUCCESS;

} ],

        rb_cv_getcwd_malloc=yes,
        rb_cv_getcwd_malloc=no,
        AS_CASE($target_os,
            [linux*|darwin*|*bsd|cygwin*|mingw*|mswin*],
            [rb_cv_getcwd_malloc=yes],
            [rb_cv_getcwd_malloc=no]))])
AS_IF([test "$rb_cv_getcwd_malloc" = no], [AC_DEFINE(NO_GETCWD_MALLOC, 1)])

])

AS_IF([test “$ac_cv_func_crypt_r” = yes],

[AC_CHECK_HEADERS(crypt.h)])

AS_IF([test “$ac_cv_func_crypt_r:$ac_cv_header_crypt_h” = yes:yes],

[AC_CHECK_MEMBERS([struct crypt_data.initialized], [], [],
                  [AC_INCLUDES_DEFAULT([@%:@include <crypt.h>])])])

AC_DEFUN(, [dnl AC_CACHE_CHECK([for $1], AS_TR_SH(rb_cv_builtin_$1),

[AC_LINK_IFELSE(
  [AC_LANG_PROGRAM([int foo;], [$2;])],
  [AS_TR_SH(rb_cv_builtin_$1)=yes],
  [AS_TR_SH(rb_cv_builtin_$1)=no])])

if test “${AS_TR_SH(rb_cv_builtin_$1)}” != no; then

AC_DEFINE(AS_TR_CPP(HAVE_BUILTIN_$1))

fi]) RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap16, [__builtin_bswap16(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap32, [__builtin_bswap32(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap64, [__builtin_bswap64(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_popcount, [__builtin_popcount(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_popcountll, [__builtin_popcountll(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_clz, [__builtin_clz(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_clzl, [__builtin_clzl(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_clzll, [__builtin_clzll(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_ctz, [__builtin_ctz(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_ctzll, [__builtin_ctzll(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_constant_p, [__builtin_constant_p(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_choose_expr, [

[int x[__extension__(__builtin_choose_expr(1, 1, -1))]];
[int y[__extension__(__builtin_choose_expr(0, -1, 1))]];
])

if test x$rb_cv_builtin___builtin_choose_expr = xyes; then

RUBY_CHECK_BUILTIN_FUNC(__builtin_choose_expr_constant_p, [
[int x[__extension__(__builtin_choose_expr(__builtin_constant_p(1), 1, -1))]];
[int y[__extension__(__builtin_choose_expr(__builtin_constant_p(foo), -1, 1))]];
])

fi RUBY_CHECK_BUILTIN_FUNC(__builtin_types_compatible_p, [__builtin_types_compatible_p(int, int)])

if test “$ac_cv_func_qsort_r” != no; then

AC_CACHE_CHECK(whether qsort_r is GNU version, rb_cv_gnu_qsort_r,
  [AC_TRY_COMPILE([

@%:@include <stdlib.h> void qsort_r(void *base, size_t nmemb, size_t size,

int (*compar)(const void *, const void *, void *),
void *arg);

],[ ],

    [rb_cv_gnu_qsort_r=yes],
    [rb_cv_gnu_qsort_r=no])
])
AC_CACHE_CHECK(whether qsort_r is BSD version, rb_cv_bsd_qsort_r,
  [AC_TRY_COMPILE([

@%:@include <stdlib.h> void qsort_r(void *base, size_t nmemb, size_t size,

void *arg, int (*compar)(void *, const void *, const void *));

],[ ],

    [rb_cv_bsd_qsort_r=yes],
    [rb_cv_bsd_qsort_r=no])
])
AS_CASE("$rb_cv_gnu_qsort_r:$rb_cv_bsd_qsort_r",
[yes:no], [
  AC_DEFINE(HAVE_GNU_QSORT_R, 1)
],
[no:yes], [
  AC_DEFINE(HAVE_BSD_QSORT_R, 1)
])

AC_CACHE_CHECK(whether atan2 handles Inf as C99, rb_cv_atan2_inf_c99, [

AS_IF([test $ac_cv_func_atan2f:$ac_cv_func_atan2l = yes:yes], [
    AC_TRY_RUN([

@%:@include <math.h> @%:@ifdef HAVE_UNISTD_H @%:@include <unistd.h> @%:@endif @%:@ifndef EXIT_SUCCESS @%:@define EXIT_SUCCESS 0 @%:@endif @%:@ifndef EXIT_FAILURE @%:@define EXIT_FAILURE 1 @%:@endif

int main(int argc, char **argv) {

if (fabs(atan2(INFINITY, INFINITY) - M_PI_4) <= 0.01) return EXIT_SUCCESS;
return EXIT_FAILURE;

} ],

    [rb_cv_atan2_inf_c99=yes],
    [rb_cv_atan2_inf_c99=no],
    [AS_CASE($target_os, [mingw*|mswin*], [rb_cv_atan2_inf_c99=no], [rb_cv_atan2_inf_c99=yes])]
    )
], [rb_cv_atan2_inf_c99=no])

]) AS_IF([test “x$rb_cv_atan2_inf_c99” = xyes], [AC_DEFINE(ATAN2_INF_C99)])

AS_IF([test “x$ac_cv_func_lgamma_r” = xyes], [

AC_CACHE_CHECK(whether lgamma_r handles +0.0 and -0.0, rb_cv_lgamma_r_pm0, [
    AC_TRY_RUN([

@%:@include <math.h> @%:@ifdef HAVE_UNISTD_H @%:@include <unistd.h> @%:@endif @%:@ifndef EXIT_SUCCESS @%:@define EXIT_SUCCESS 0 @%:@endif @%:@ifndef EXIT_FAILURE @%:@define EXIT_FAILURE 1 @%:@endif

int main(int argc, char **argv) {

int sign = 0;
double x = lgamma_r(-0.0, &sign);

/* should be [+inf, -1] */
if (x <= 0) return EXIT_FAILURE;
if (!isinf(x)) return EXIT_FAILURE;
if (sign != -1) return EXIT_FAILURE;

/* should be [+inf, 1] */
x = lgamma_r(+0.0, &sign);
if (x <= 0) return EXIT_FAILURE;
if (!isinf(x)) return EXIT_FAILURE;
if (sign != 1) return EXIT_FAILURE;
return EXIT_SUCCESS;

} ],

    [rb_cv_lgamma_r_pm0=yes],
    [rb_cv_lgamma_r_pm0=no],
    [rb_cv_lgamma_r_pm0=yes]
    )
])
AS_IF([test "x$rb_cv_lgamma_r_pm0" = xno], [AC_DEFINE(LGAMMA_R_PM0_FIX)])

])

# Some platform need -lrt for clock_gettime, but the other don't. if test x“$ac_cv_func_clock_gettime” != xyes; then

# glibc 2.17 moves clock_* functions from librt to the main C library.
# http://sourceware.org/ml/libc-announce/2012/msg00001.html
AC_CHECK_LIB(rt, clock_gettime)
if test x"$ac_cv_lib_rt_clock_gettime" = xyes; then
    AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
fi

fi AC_CHECK_FUNCS(clock_getres) # clock_getres should be tested after clock_gettime test including librt test.

AC_CACHE_CHECK(for unsetenv returns a value, rb_cv_unsetenv_return_value,

[AC_TRY_COMPILE([

include <stdlib.h> ], [int v = unsetenv(“foo”);],

rb_cv_unsetenv_return_value=yes,
rb_cv_unsetenv_return_value=no)])

if test “$rb_cv_unsetenv_return_value” = no; then

AC_DEFINE(VOID_UNSETENV)

# used for AC_ARG_WITH(setjmp-type) AC_DEFUN(, [ AC_CACHE_CHECK([for ]$1[ as a macro or function], ac_cv_func_$1,

[AC_TRY_COMPILE([

@%:@include <setjmp.h> ]AC_INCLUDES_DEFAULT()[ @%:@define JMPARGS_1 env @%:@define JMPARGS_2 env,1 @%:@define JMPARGS JMPARGS_]m4_ifval($2,2,1)[ ],

m4_ifval($2,$2,jmp_buf)[ env; $1(JMPARGS);],
ac_cv_func_$1=yes,
ac_cv_func_$1=no)]

) AS_IF([test “$ac_cv_func_]$1[” = yes], [AC_DEFINE(AS_TR_CPP($1), 1)]) ])

AC_DEFUN(, [ if test x“${ac_cv_func___builtin_setjmp}” = xyes; then

unset ac_cv_func___builtin_setjmp

fi AC_CACHE_CHECK(for __builtin_setjmp, ac_cv_func___builtin_setjmp,

[
ac_cv_func___builtin_setjmp=no
for cast in "" "(void **)"; do
    RUBY_WERROR_FLAG(
    [AC_TRY_LINK([@%:@include <setjmp.h>
        @%:@include <stdio.h>
        jmp_buf jb;
        @%:@ifdef NORETURN
        NORETURN(void t(void));
        @%:@endif
        void t(void) {__builtin_longjmp($cast jb, 1);}
        int jump(void) {(void)(__builtin_setjmp($cast jb) ? 1 : 0); return 0;}],
        [
        void (*volatile f)(void) = t;
        if (!jump()) printf("%d\n", f != 0);
        ],
        [ac_cv_func___builtin_setjmp="yes with cast ($cast)"])
    ])
    test "$ac_cv_func___builtin_setjmp" = no || break
done])

])

AC_DEFUN(, [ RUBY_CHECK_BUILTIN_SETJMP RUBY_CHECK_SETJMP(_setjmpex, [], [@%:@include <setjmpex.h>]) RUBY_CHECK_SETJMP(_setjmp) RUBY_CHECK_SETJMP(sigsetjmp, [sigjmp_buf]) AC_MSG_CHECKING(for setjmp type) setjmp_suffix= AC_ARG_WITH(setjmp-type,

AS_HELP_STRING([--with-setjmp-type], [select setjmp type]),
[
AS_CASE([$withval],
[__builtin_setjmp], [setjmp=__builtin_setjmp],
[_setjmp], [ setjmp_prefix=_],
[sigsetjmp], [ setjmp_prefix=sig],
[setjmp], [ setjmp_prefix=],
[setjmpex], [ setjmp_prefix= setjmp_suffix=ex],
[''], [ unset setjmp_prefix],
[   AC_MSG_ERROR(invalid setjmp type: $withval)])], [unset setjmp_prefix])

setjmp_cast= if test ${setjmp_prefix+set}; then

if test "${setjmp_prefix}" && eval test '$ac_cv_func_'${setjmp_prefix}setjmp${setjmp_suffix} = no; then
    AC_MSG_ERROR(${setjmp_prefix}setjmp${setjmp_suffix} is not available)
fi

elif { AS_CASE(“$ac_cv_func___builtin_setjmp”, [yes*], [true], [false]) }; then

setjmp_cast=`expr "$ac_cv_func___builtin_setjmp" : "yes with cast (\(.*\))"`
setjmp_prefix=__builtin_
setjmp_suffix=

elif test “$ac_cv_header_setjmpex_h:$ac_cv_func__setjmpex” = yes:yes; then

setjmp_prefix=
setjmp_suffix=ex

elif test “$ac_cv_func__setjmp” = yes; then

setjmp_prefix=_
setjmp_suffix=

elif test “$ac_cv_func_sigsetjmp” = yes; then

AS_CASE([$target_os],[solaris*|cygwin*],[setjmp_prefix=],[setjmp_prefix=sig])
setjmp_suffix=

else

setjmp_prefix=
setjmp_suffix=

fi if test x$setjmp_prefix = xsig; then

setjmp_sigmask=yes

else

unset setjmp_sigmask

fi AC_MSG_RESULT(${setjmp_prefix}setjmp${setjmp_suffix}${setjmp_cast:+($setjmp_cast)}) AC_DEFINE_UNQUOTED(, [${setjmp_prefix}setjmp${setjmp_suffix}($setjmp_cast(env)${setjmp_sigmask+,0})]) AC_DEFINE_UNQUOTED(, [${setjmp_prefix}longjmp($setjmp_cast(env),val)]) AC_DEFINE_UNQUOTED(RUBY_JMP_BUF, ${setjmp_sigmask+${setjmp_prefix}}jmp_buf) AS_IF([test x$setjmp_suffix = xex], [AC_DEFINE_UNQUOTED(RUBY_USE_SETJMPEX, 1)]) ]) # End of setjmp check.

AC_ARG_ENABLE(setreuid,

AS_HELP_STRING([--enable-setreuid], [use setreuid()/setregid() according to need even if obsolete]),
[use_setreuid=$enableval])

if test “$use_setreuid” = yes; then

AC_DEFINE(USE_SETREUID)
AC_DEFINE(USE_SETREGID)

fi AC_STRUCT_TIMEZONE AC_CACHE_CHECK(for struct tm.tm_gmtoff, rb_cv_member_struct_tm_tm_gmtoff,

[AC_TRY_COMPILE([

@%:@define _BSD_SOURCE @%:@define _DEFAULT_SOURCE @%:@include <time.h>

 ],
  [struct tm t; t.tm_gmtoff = 3600;],
[rb_cv_member_struct_tm_tm_gmtoff=yes],
[rb_cv_member_struct_tm_tm_gmtoff=no])])

if test “$rb_cv_member_struct_tm_tm_gmtoff” = yes; then

AC_DEFINE(HAVE_STRUCT_TM_TM_GMTOFF)

fi AC_CACHE_CHECK(for external int daylight, rb_cv_have_daylight,

[AC_TRY_LINK([#include <time.h>
int i;],
      [i = daylight;],
      rb_cv_have_daylight=yes,
      rb_cv_have_daylight=no)])

if test “$rb_cv_have_daylight” = yes; then

AC_DEFINE(HAVE_DAYLIGHT)

fi AC_DEFUN(, [dnl AC_CACHE_CHECK([for external $1], AS_TR_SH(rb_cv_var_$1),

[AS_TR_SH(rb_cv_var_$1)=no
AC_TRY_COMPILE([

ifndef _XOPEN_SOURCE define _XOPEN_SOURCE 1 endif $2 ; const volatile void *volatile t;],

[t = &(&$1)[0];],
[for t in $3; do
  AC_TRY_COMPILE([

ifndef _XOPEN_SOURCE define _XOPEN_SOURCE 1 endif $2 ; extern $t $1; const volatile void *volatile t;],

    [t = &(&$1)[0];],
    [AS_TR_SH(rb_cv_var_$1)=$t; break])
done])])

if test “${AS_TR_SH(rb_cv_var_$1)}” != no; then

AC_DEFINE(AS_TR_CPP(HAVE_VAR_$1))
AC_DEFINE_UNQUOTED(AS_TR_CPP(TYPEOF_VAR_$1), ${AS_TR_SH(rb_cv_var_$1)})

fi]) RUBY_CHECK_VARTYPE(timezone, [@%:@include <time.h>], [long int]) RUBY_CHECK_VARTYPE(altzone, [@%:@include <time.h>], [long int]) AC_CHECK_FUNCS(timezone) if test “$ac_cv_func_timezone” = yes; then

AC_CACHE_CHECK([whether timezone requires zero arguments], rb_cv_func_timezone_void,
  [AC_TRY_COMPILE([@%:@include <time.h>],
    [(void)timezone(0, 0);],
    [rb_cv_func_timezone_void=no],
    [rb_cv_func_timezone_void=yes])]
)
if test $rb_cv_func_timezone_void = yes; then
  AC_DEFINE(TIMEZONE_VOID)
fi

AC_CACHE_CHECK(for negative time_t for gmtime(3), rb_cv_negative_time_t,

[AC_TRY_RUN([

include <stdlib.h> include <time.h>

void check(tm, y, m, d, h, s)

struct tm *tm;
int y, m, d, h, s;

{

if (!tm ||
    tm->tm_year != y ||
    tm->tm_mon  != m-1 ||
    tm->tm_mday != d ||
    tm->tm_hour != h ||
    tm->tm_sec  != s) {
    exit(1);
}

}

int main() {

time_t t = -1;
struct tm *tm;

check(gmtime(&t), 69, 12, 31, 23, 59);
t = ~(time_t)0 << 31;
check(gmtime(&t), 1, 12, 13, 20, 52);
return 0;

} ],

rb_cv_negative_time_t=yes,
rb_cv_negative_time_t=no,
rb_cv_negative_time_t=yes)])

if test “$rb_cv_negative_time_t” = yes; then

AC_DEFINE(NEGATIVE_TIME_T)

# [ruby-dev:40910] overflow of time on FreeBSD # www.freebsd.org/cgi/query-pr.cgi?pr=145341 AC_CACHE_CHECK(for localtime(3) overflow correctly, rb_cv_localtime_overflow,

[AC_TRY_RUN([

include <stdlib.h> include <time.h>

void check(time_t t1) {

struct tm *tm;
time_t t2;
tm = localtime(&t1);
if (!tm)
    return; /* overflow detected.  ok. */
t2 = mktime(tm);
if (t1 == t2)
    return; /* round-trip.  ok. */
exit(1);

}

int main() {

time_t t;
if (~(time_t)0 <= 0) {
    t = (((time_t)1) << (sizeof(time_t) * 8 - 2));
    t |= t - 1;
}
else {
    t = ~(time_t)0;
}
check(t);
return 0;

} ],

rb_cv_localtime_overflow=yes,
rb_cv_localtime_overflow=no,
rb_cv_localtime_overflow=no)])

if test “$rb_cv_localtime_overflow” = no; then

AC_DEFINE(LOCALTIME_OVERFLOW_PROBLEM)

if test “$ac_cv_func_sigprocmask” = yes && test “$ac_cv_func_sigaction” = yes; then

AC_DEFINE(POSIX_SIGNAL)

else

AC_CHECK_FUNCS(sigsetmask)
AC_CACHE_CHECK(for BSD signal semantics, rb_cv_bsd_signal,
  [AC_TRY_RUN([

include <stdio.h> include <signal.h>

void sig_handler(dummy)

int dummy;

{ }

int main() {

signal(SIGINT, sig_handler);
kill(getpid(), SIGINT);
kill(getpid(), SIGINT);
return 0;

} ],

      rb_cv_bsd_signal=yes,
      rb_cv_bsd_signal=no,
      rb_cv_bsd_signal=$ac_cv_func_sigsetmask)])
if test "$rb_cv_bsd_signal" = yes; then
  AC_DEFINE(BSD_SIGNAL)
fi

AC_CHECK_TYPES(,[],[],[@%:@include <signal.h>])

if test “$ac_cv_func_getpgid” = no; then

# AC_FUNC_GETPGRP fails when cross-compiling with old autoconf.
# autoconf is changed between 2.52d and 2.52f?
# http://lists.gnu.org/archive/html/bug-gnu-utils/2001-09/msg00181.html
# "autoconf cleanup for AC_FUNC_GETPGRP and GETPGRP_VOID"

AC_FUNC_GETPGRP fi if test “$ac_cv_func_setpgid:$ac_cv_func_setpgrp” = no:yes; then

# AC_FUNC_SETPGRP fails when cross-compiling.  (until autoconf 2.69?)
# https://lists.gnu.org/archive/html/bug-autoconf/2013-02/msg00002.html
# "AC_FUNC_SETPGRP fails to work properly when cross-compiling"

AC_FUNC_SETPGRP fi

if test x“$ac_cv_func_dirfd” = xno; then

AS_CASE(["$target_os"],[solaris*],
        [AC_CHECK_MEMBERS([DIR.d_fd, DIR.dd_fd],,,[

include <sys/types.h> include <dirent.h> ])]) fi

if test x“$target_cpu” = xia64; then

AC_LIBOBJ([ia64])
AC_CACHE_CHECK(for __libc_ia64_register_backing_store_base,
               rb_cv___libc_ia64_register_backing_store_base,
[rb_cv___libc_ia64_register_backing_store_base=no
AC_TRY_LINK(
  [extern unsigned long __libc_ia64_register_backing_store_base;],
  [unsigned long p = __libc_ia64_register_backing_store_base;
   printf("%ld\n", p);],
  [rb_cv___libc_ia64_register_backing_store_base=yes])])
if test $rb_cv___libc_ia64_register_backing_store_base = yes; then
  AC_DEFINE(HAVE___LIBC_IA64_REGISTER_BACKING_STORE_BASE)
fi

AC_CACHE_CHECK(whether right shift preserve sign bit, rb_cv_rshift_sign,

[AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([], [(-1==(-1>>1))])],
    rb_cv_rshift_sign=yes,
    rb_cv_rshift_sign=no)])

if test “$rb_cv_rshift_sign” = yes; then

AC_DEFINE(RSHIFT(x,y), ((x)>>(int)(y)))

else

AC_DEFINE(RSHIFT(x,y), (((x)<0) ? ~((~(x))>>(int)(y)) : (x)>>(int)(y)))

if test x“$ac_cv_func_gettimeofday” != xyes; then

AC_MSG_ERROR(gettimeofday() must exist)

if test “$ac_cv_func_sysconf” = yes; then

AC_DEFUN([RUBY_CHECK_SYSCONF], [dnl
AC_CACHE_CHECK([whether _SC_$1 is supported], rb_cv_have_sc_[]m4_tolower($1),
  [AC_TRY_COMPILE([#include <unistd.h>
    ],
    [_SC_$1 >= 0],
    rb_cv_have_sc_[]m4_tolower($1)=yes,
    rb_cv_have_sc_[]m4_tolower($1)=no)
  ])
if test "$rb_cv_have_sc_[]m4_tolower($1)" = yes; then
  AC_DEFINE(HAVE__SC_$1)
fi
])
RUBY_CHECK_SYSCONF(CLK_TCK)

AC_DEFUN(, [

AS_VAR_PUSHDEF([stack_grow_dir], [rb_cv_stack_grow_dir_$1])
AC_CACHE_CHECK(stack growing direction on $1, stack_grow_dir, [

AS_CASE(, [m68*|x86*|x64|i?86|ia64|ppc*|sparc*|alpha*], [ $2=-1], [hppa*], [ $2=+1], [

AC_TRY_RUN([

/* recurse to get rid of inlining */ static int stack_growup_p(addr, n)

volatile int *addr, n;

{

volatile int end;
if (n > 0)
    return *addr = stack_growup_p(addr, n - 1);
else
    return (&end > addr);

} int main() {

int x;
return stack_growup_p(&x, 10);

} ], $2=-1, $2=+1, $2=0)

])

eval stack_grow_dir=$$2]) eval $2=$stack_grow_dir AS_VAR_POPDEF()]) if test “${universal_binary-no}” = yes ; then

archflagpat=`eval echo '"'"${ARCH_FLAG}"'"' | sed 's/[[][|.*]]/\\&/g'`
save_CFLAGS="$CFLAGS" new_cflags=`echo "$CFLAGS" | sed "s|$archflagpat"'||'`
save_LDFLAGS="$LDFLAGS" new_ldflags=`echo "$LDFLAGS" | sed "s|$archflagpat"'||'`
stack_dir=
for archs in ${universal_archnames}; do
    archs=`echo $archs | sed 's/=.*//'`
    CFLAGS="$new_cflags -arch $archs"
    LDFLAGS="$new_ldflags -arch $archs"
    RUBY_STACK_GROW_DIRECTION($archs, dir)
    if test x$stack_dir = x; then
        stack_dir=$dir
    elif test x$stack_dir != x$dir; then
        stack_dir=no
    fi
done
CFLAGS="$save_CFLAGS" LDFLAGS="$save_LDFLAGS"
if test x$stack_dir = xno; then
    for archs in ${universal_archnames}; do
        archs=`echo $archs | sed 's/=.*//'`
        eval dir=\$[rb_cv_stack_grow_dir_]AS_TR_SH([$archs])
        RUBY_DEFINE_IF([defined __${archs}__], STACK_GROW_DIRECTION, $dir)
    done
else
    AC_DEFINE_UNQUOTED(STACK_GROW_DIRECTION, $stack_dir)
fi

else

RUBY_STACK_GROW_DIRECTION($target_cpu, dir)
AC_DEFINE_UNQUOTED(STACK_GROW_DIRECTION, $dir)

if test x“$enable_pthread” = xyes; then

for pthread_lib in thr pthread pthreads c c_r root; do
    AC_CHECK_LIB($pthread_lib, pthread_kill,
                 rb_with_pthread=yes, rb_with_pthread=no)
    if test "$rb_with_pthread" = "yes"; then break; fi
done
if test x"$rb_with_pthread" = xyes; then
    AC_DEFINE(_REENTRANT)
    AC_DEFINE(_THREAD_SAFE)
    AC_DEFINE(HAVE_LIBPTHREAD)
    AC_CHECK_HEADERS(pthread_np.h, [], [], [@%:@include <pthread.h>])
    AS_CASE([$pthread_lib],
    [c],    [],
    [root], [],
    [c_r],  [MAINLIBS="-pthread $MAINLIBS"],
            [AS_CASE(["$target_os"],
                [openbsd*|mirbsd*], [LIBS="-pthread $LIBS"],
                [LIBS="-l$pthread_lib $LIBS"])])
else
    AC_MSG_WARN("Don't know how to find pthread library on your system -- thread support disabled")
fi
AC_CACHE_CHECK([whether pthread_t is scalar type], [rb_cv_scalar_pthread_t], [
    AC_TRY_COMPILE([
        @%:@include <pthread.h>
        ], [
        pthread_t thread_id;
        thread_id = 0;
        if (!thread_id) return 0;
        ], [rb_cv_scalar_pthread_t=yes], [rb_cv_scalar_pthread_t=no])
])
if test x"$rb_cv_scalar_pthread_t" = xyes; then
    : # RUBY_CHECK_SIZEOF(pthread_t, [void* int long], [], [@%:@include <pthread.h>])
else
    AC_DEFINE(NON_SCALAR_THREAD_ID)
fi
AC_CHECK_FUNCS(sched_yield pthread_attr_setinheritsched \
    pthread_attr_get_np pthread_attr_getstack\
    pthread_get_stackaddr_np pthread_get_stacksize_np \
    thr_stksegment pthread_stackseg_np pthread_getthrds_np \
    pthread_cond_init pthread_condattr_setclock pthread_condattr_init \
    pthread_sigmask pthread_setname_np pthread_set_name_np)
AS_CASE(["$target_os"],[aix*],[ac_cv_func_pthread_getattr_np=no],[AC_CHECK_FUNCS(pthread_getattr_np)])
if test "${host_os}" = "nacl"; then
  ac_cv_func_pthread_attr_init=no
else
  AC_CHECK_FUNCS(pthread_attr_init)
fi
set_current_thread_name=
if test "$ac_cv_func_pthread_setname_np" = yes; then
    AC_CACHE_CHECK([arguments of pthread_setname_np], [rb_cv_func_pthread_setname_np_arguments],
        [rb_cv_func_pthread_setname_np_arguments=
        # Linux,AIX,  (pthread_self(), name)
        # NetBSD (pthread_self(), name, \"%s\")
        # Darwin (name)
        for mac in \
            "(pthread_self(), name)" \
            "(pthread_self(), name, \"%s\")" \
            "(name)" \
            ; do
            AC_TRY_COMPILE([
                @%:@include <pthread.h>
                @%:@ifdef HAVE_PTHREAD_NP_H
                @%:@include <pthread_np.h>
                @%:@endif
                @%:@define SET_THREAD_NAME(name) pthread_setname_np${mac}
                ],
                [if (SET_THREAD_NAME("conftest")) return 1;],
                [rb_cv_func_pthread_setname_np_arguments="${mac}"
                break])
        done
        ]
    )
    if test -n "${rb_cv_func_pthread_setname_np_arguments}"; then
        set_current_thread_name="pthread_setname_np${rb_cv_func_pthread_setname_np_arguments}"
    fi
elif test "$ac_cv_func_pthread_set_name_np" = yes; then
    set_current_thread_name="pthread_set_name_np(pthread_self(), name)"
fi
AS_IF([test -n "$set_current_thread_name"], [
    AC_DEFINE_UNQUOTED(SET_CURRENT_THREAD_NAME(name), $set_current_thread_name)
    AS_CASE([$set_current_thread_name],
        [*'pthread_self()'*], [
            set_another_thread_name=`echo "$set_current_thread_name" | sed 's/pthread_self()/thid/'`
            AC_DEFINE_UNQUOTED(SET_ANOTHER_THREAD_NAME(thid,name), $set_another_thread_name)
        ])
])

if test x“$ac_cv_header_ucontext_h” = xno; then

AC_CACHE_CHECK([if signal.h defines ucontext_t], [rb_cv_ucontext_in_signal_h],
    [AC_TRY_COMPILE([@%:@include <signal.h>],
    [size_t size = sizeof(ucontext_t);],
    [rb_cv_ucontext_in_signal_h=yes], [rb_cv_ucontext_in_signal_h=no])])
if test x"$rb_cv_ucontext_in_signal_h" = xyes; then
        AC_DEFINE_UNQUOTED(UCONTEXT_IN_SIGNAL_H, 1)
fi

fi if test x“$ac_cv_header_ucontext_h” = xyes -o x“$rb_cv_ucontext_in_signal_h” = xyes; then

AC_CACHE_CHECK([if mcontext_t is a pointer], [rb_cv_mcontext_t_ptr],
    [AC_TRY_COMPILE([
        @%:@include <signal.h>
        @%:@ifdef HAVE_UCONTEXT_H
        @%:@include <ucontext.h>
        @%:@endif
    mcontext_t test(mcontext_t mc) {return mc+1;}
    ],
    [test(0);],
    [rb_cv_mcontext_t_ptr=yes], [rb_cv_mcontext_t_ptr=no])])
if test x"$rb_cv_mcontext_t_ptr" = xyes; then
    AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t mc = (uc)->uc_mcontext)
else
    AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t *mc = &(uc)->uc_mcontext)
fi
if test x"$rb_with_pthread" = xyes; then
    AC_CHECK_FUNCS(getcontext setcontext)
fi

if test “$ac_cv_func_fork_works” = “yes” -a “$rb_with_pthread” = “yes”; then

AC_CACHE_CHECK([if fork works with pthread], rb_cv_fork_with_pthread,
    [AC_TRY_RUN([

include <stdlib.h> include <unistd.h> include <pthread.h> include <stdio.h> include <sys/types.h> include <sys/wait.h> include <signal.h> ifndef EXIT_SUCCESS define EXIT_SUCCESS 0 endif ifndef EXIT_FAILURE define EXIT_FAILURE 1 endif

void * thread_func(void *dmy) {

return dmy;

}

int use_threads(void) {

pthread_t tid;
if (pthread_create(&tid, 0, thread_func, 0) != 0) {
    return -1;
}
if (pthread_join(tid, 0) != 0) {
    return -1;
}
return 0;

}

int main(int argc, char *argv[]) {

pid_t pid;
if (use_threads()) return EXIT_FAILURE;
pid = fork();

if (pid) {
    int loc;
    sleep(1);
    if (waitpid(pid, &loc, WNOHANG) == 0) {
        kill(pid, SIGKILL);
        return EXIT_FAILURE;
    }
    if (!WIFEXITED(loc) || WEXITSTATUS(loc) != EXIT_SUCCESS)
       return EXIT_FAILURE;
}
else {
    if (use_threads()) return EXIT_FAILURE;
}

return EXIT_SUCCESS;

}],

    rb_cv_fork_with_pthread=yes,
    rb_cv_fork_with_pthread=no,
    rb_cv_fork_with_pthread=yes)])
test x$rb_cv_fork_with_pthread = xyes || AC_DEFINE(CANNOT_FORK_WITH_PTHREAD)

} { # runtime section

dnl wheather use dln_a_out or not AC_ARG_WITH(dln-a-out,

AS_HELP_STRING([--with-dln-a-out], [use dln_a_out if possible]),
[
AS_CASE([$withval],
[yes], [
    if test "$enable_shared" = yes; then
        AC_MSG_ERROR(dln_a_out can not make shared library)
    fi
    with_dln_a_out=yes],
[
    with_dln_a_out=no])], [with_dln_a_out=no])

AC_CACHE_CHECK(whether ELF binaries are produced, rb_cv_binary_elf, [AC_TRY_LINK([],, [ AS_CASE([“`head -1 conftest$EXEEXT | tr -dc '177ELF' | tr '177' .`”], [.ELF*], [rb_cv_binary_elf=yes], [rb_cv_binary_elf=no])], rb_cv_binary_elf=no)])

if test “$rb_cv_binary_elf” = yes; then

AC_DEFINE(USE_ELF)
if test "$with_dln_a_out" = yes; then
  AC_MSG_ERROR(dln_a_out does not work with ELF)
fi
AC_CHECK_HEADERS([elf.h elf_abi.h])
if test $ac_cv_header_elf_h = yes -o $ac_cv_header_elf_abi_h = yes; then
  AC_LIBOBJ([addr2line])
fi

if test "$rb_cv_binary_elf" = no; then
    with_dln_a_out=yes
else
    LDFLAGS="$LDFLAGS -rdynamic"
fi])

LIBEXT=a

AC_SUBST(DLDFLAGS)dnl AC_SUBST(ARCH_FLAG)dnl

AC_SUBST(STATIC)dnl AC_SUBST(CCDLFLAGS)dnl AC_SUBST(LDSHARED)dnl AC_SUBST(LDSHAREDXX)dnl AC_SUBST(DLEXT)dnl AC_SUBST(DLEXT2)dnl AC_SUBST(LIBEXT)dnl AC_SUBST(ASMEXT, S)dnl

STATIC=

if test “$with_dln_a_out” != yes; then

rb_cv_dlopen=unknown
AC_MSG_CHECKING(whether OS depend dynamic link works)
if test "$GCC" = yes; then
  AS_CASE(["$target_os"],
  [darwin*], [
    # The -fno-common is needed if we wish to embed the Ruby interpreter
    # into a plugin module of some project (as opposed to embedding it
    # within the project's application).  The -I/usr/local/include is
    # needed because CPP as discovered by configure (cc -E -traditional)
    # fails to consult /usr/local/include by default.  This causes
    # mkmf.rb's have_header() to fail if the desired resource happens to be
    # installed in the /usr/local tree.
    RUBY_APPEND_OPTION(CCDLFLAGS, -fno-common)],
  [bsdi*|cygwin*|mingw*|aix*|interix*], [ ],
  [
    RUBY_APPEND_OPTION(CCDLFLAGS, -fPIC)])
else
  AS_CASE(["$target_os"],
      [hpux*],          [CCDLFLAGS="$CCDLFLAGS +Z"],
      [solaris*|irix*], [CCDLFLAGS="$CCDLFLAGS -KPIC"],
      [sunos*],         [CCDLFLAGS="$CCDLFLAGS -PIC"],
      [esix*|uxpds*],   [CCDLFLAGS="$CCDLFLAGS -KPIC"],
                        [: ${CCDLFLAGS=""}])
fi

AC_ARG_ENABLE(rpath,
     AS_HELP_STRING([--enable-rpath], [embed run path into extension libraries.
     enabled by default on ELF platforms]),
     [enable_rpath=$enableval], [enable_rpath="$rb_cv_binary_elf"])

AS_CASE(["$target_os"],
      [hpux*], [      DLDFLAGS="$DLDFLAGS -E"
                      : ${LDSHARED='$(LD) -b'}
                      XLDFLAGS="$XLDFLAGS -Wl,-E"
                      : ${LIBPATHENV=SHLIB_PATH}
                      rb_cv_dlopen=yes],
      [solaris*], [   if test "$GCC" = yes; then
                          : ${LDSHARED='$(CC) -shared'}
                          if test "$rb_cv_prog_gnu_ld" = yes; then
                              LDFLAGS="$LDFLAGS -Wl,-E"
                          fi
                      else
                          : ${LDSHARED='$(CC) -G'}
                      fi
                      if test "$ac_cv_sizeof_voidp" = 8; then
                          : ${LIBPATHENV=LD_LIBRARY_PATH_64}
                          : ${PRELOADENV=LD_PRELOAD_64}
                      else
                          : ${LIBPATHENV=LD_LIBRARY_PATH_32}
                          : ${PRELOADENV=LD_PRELOAD_32}
                      fi
                      rb_cv_dlopen=yes],
      [sunos*], [     : ${LDSHARED='$(LD) -assert nodefinitions'}
                      rb_cv_dlopen=yes],
      [irix*], [      : ${LDSHARED='$(LD) -shared'}
                      rb_cv_dlopen=yes],
      [sysv4*], [     : ${LDSHARED='$(LD) -G'}
                      rb_cv_dlopen=yes],
      [nto-qnx*], [   : ${LDSHARED='$(CC) -shared'}
                      rb_cv_dlopen=yes],
      [esix*|uxpds*], [ : ${LDSHARED='$(LD) -G'}
                      rb_cv_dlopen=yes],
      [osf*], [       : ${LDSHARED='$(LD) -shared -expect_unresolved "*"'}
                      rb_cv_dlopen=yes],
      [bsdi3*], [     AS_CASE(["$CC"],
                      [*shlicc*], [   : ${LDSHARED='$(CC) -r'}
                                      rb_cv_dlopen=yes])],
      [linux* | gnu* | k*bsd*-gnu | netbsd* | bsdi* | kopensolaris*-gnu | haiku*], [
                      : ${LDSHARED='$(CC) -shared'}
                      if test "$rb_cv_binary_elf" = yes; then
                          LDFLAGS="$LDFLAGS -Wl,-export-dynamic"
                      fi
                      rb_cv_dlopen=yes],
      [interix*], [   : ${LDSHARED='$(CC) -shared'}
                      XLDFLAGS="$XLDFLAGS -Wl,-E"
                      LIBPATHFLAG=" -L%1\$-s"
                      rb_cv_dlopen=yes],
      [freebsd*|dragonfly*], [
                      : ${LDSHARED='$(CC) -shared'}
                      if test "$rb_cv_binary_elf" = yes; then
                          LDFLAGS="$LDFLAGS -rdynamic"
                          DLDFLAGS="$DLDFLAGS "'-Wl,-soname,$@'
                      else
                        test "$GCC" = yes && test "$rb_cv_prog_gnu_ld" = yes || LDSHARED='$(LD) -Bshareable'
                      fi
                      rb_cv_dlopen=yes],
      [openbsd*|mirbsd*], [   : ${LDSHARED='$(CC) -shared ${CCDLFLAGS}'}
                      if test "$rb_cv_binary_elf" = yes; then
                          LDFLAGS="$LDFLAGS -Wl,-E"
                      fi
                      rb_cv_dlopen=yes],
      [darwin*], [    : ${LDSHARED='$(CC) -dynamic -bundle'}
                      : ${LDFLAGS=""}
                      : ${LIBPATHENV=DYLD_LIBRARY_PATH}
                      : ${PRELOADENV=DYLD_INSERT_LIBRARIES}
                      rb_cv_dlopen=yes],
      [aix*], [       : ${LDSHARED='$(CC)'}
                      LDSHARED="$LDSHARED ${linker_flag}-G"
                      EXTDLDFLAGS='-e$(TARGET_ENTRY)'
                      XLDFLAGS="${linker_flag}"'-bE:$(ARCHFILE)'" ${linker_flag}-brtl"
                      XLDFLAGS="$XLDFLAGS ${linker_flag}-blibpath:${prefix}/lib:${LIBPATH:-/usr/lib:/lib}"
                      : ${ARCHFILE="ruby.imp"}
                      TRY_LINK='$(CC) $(LDFLAGS) -oconftest $(INCFLAGS) -I$(hdrdir) $(CPPFLAGS)'
                      TRY_LINK="$TRY_LINK"' $(CFLAGS) $(src) $(LIBPATH) $(LOCAL_LIBS) $(LIBS)'
                      : ${LIBPATHENV=LIBPATH}
                      rb_cv_dlopen=yes],
      [nto-qnx*], [   DLDFLAGS="$DLDFLAGS -L/lib -L/usr/lib -L/usr/local/lib"
                      : ${LDSHARED='$(LD) -Bshareable -x'}
                      LDFLAGS="$LDFLAGS -L/lib -L/usr/lib -L/usr/local/lib"
                      rb_cv_dlopen=yes],
      [cygwin*|mingw*], [
                      : ${LDSHARED='$(CC) -shared $(if $(filter-out -g -g0,$(debugflags)),,-s)'}
                      XLDFLAGS="$XLDFLAGS -Wl,--stack,0x00200000,--enable-auto-import"
                      DLDFLAGS="${DLDFLAGS} -Wl,--enable-auto-image-base,--enable-auto-import"
                      : ${LIBPATHENV=""}
                      : ${PRELOADENV=""}
                      rb_cv_dlopen=yes],
      [hiuxmpp], [    : ${LDSHARED='$(LD) -r'}],
      [atheos*], [    : ${LDSHARED='$(CC) -shared'}
                      rb_cv_dlopen=yes],
      [nacl], [ LDSHARED='$(CC) -shared' ],
      [       : ${LDSHARED='$(LD)'}])
AC_MSG_RESULT($rb_cv_dlopen)

if test "$rb_cv_dlopen" = yes; then
  AS_CASE(["$target_os"],
    [darwin*], [
      for flag in \
        "-undefined dynamic_lookup" \
        "-multiply_defined suppress" \
        ; do
        test "x${linker_flag}" = x || flag="${linker_flag}`echo ${flag} | tr ' ' ,`"
        RUBY_TRY_LDFLAGS([$flag], [], [flag=])
        if test "x$flag" != x; then
          RUBY_APPEND_OPTIONS(DLDFLAGS, [$flag])
        fi
      done
    ])
fi

AS_IF([test "$enable_rpath:${RPATHFLAG}" = yes:], [
    AS_IF([test "x$rpathflag" != x], [
        RPATHFLAG=" ${rpathflag}%1\$-s"
    ])
])

fi if test “${LDSHAREDXX}” = “”; then

AS_CASE(["${LDSHARED}"],
    [*'$(CC)'*], [
        LDSHAREDXX=`echo "${LDSHARED}" | sed 's/\$(CC)/$(CXX)/'`
        ],
    [*'${CC}'*], [
        LDSHAREDXX=`echo "${LDSHARED}" | sed 's/\${CC}/${CXX}/'`
        ],
    [*$CC*], [
        LDSHAREDXX=`echo "${LDSHARED}" | sed "s|$CC|$CXX|"`
        ],
    [ld" "*], [
        ])

fi AS_CASE(,[*'%1$'*],[: ${LIBPATHFLAG=' -L%1$-s'}],[: ${LIBPATHFLAG=' -L%s'}])

AC_SUBST(LINK_SO) AC_SUBST(LIBPATHFLAG) AC_SUBST(RPATHFLAG) AC_SUBST(LIBPATHENV, “${LIBPATHENV-LD_LIBRARY_PATH}”) AC_SUBST(PRELOADENV, “${PRELOADENV-LD_PRELOAD}”) AC_SUBST(TRY_LINK)

if test “x$OPT_DIR” != x; then

pat=`echo "${LDFLAGS_OPTDIR}" | sed ['s/[][\\.*|]/\\\\&/']`
LDFLAGS=`echo "${LDFLAGS}" | sed "s| ${pat}||"`
val=`IFS="$PATH_SEPARATOR"
    for dir in $OPT_DIR; do
        echo x ${LIBPATHFLAG} ${RPATHFLAG} |
        sed "s/^x *//;s${IFS}"'%1\\$-s'"${IFS}${dir}/lib${IFS}g;s${IFS}%s${IFS}${dir}/lib${IFS}g"
    done | tr '\012' ' ' | sed 's/ *$//'`
if test x"$val" != x; then
    test x"${LDFLAGS}" = x || LDFLAGS="$LDFLAGS "
    LDFLAGS="$LDFLAGS$val"
    test x"${DLDFLAGS}" = x || DLDFLAGS="$DLDFLAGS "
    DLDFLAGS="$DLDFLAGS$val"
fi
LDFLAGS_OPTDIR="$val"

AS_CASE(, [freebsd*], [

AC_CHECK_LIB([procstat], [procstat_open_sysctl])
if test "x$ac_cv_lib_procstat_procstat_open_sysctl" = xyes; then
    AC_CHECK_FUNCS(procstat_getvmmap)
fi
])

AS_CASE(, [-darwin], [

AC_CHECK_HEADERS([execinfo.h])
if test "x$ac_cv_header_execinfo_h" = xyes; then
    AC_CHECK_LIB([execinfo], [backtrace])
    AC_CHECK_HEADERS([libunwind.h])
fi],

[-freebsd|x86_64-netbsd*], [

AC_CHECK_HEADERS([execinfo.h])
if test "x$ac_cv_header_execinfo_h" = xyes; then
    AC_CHECK_LIB([execinfo], [backtrace])
    AC_CHECK_LIB([unwind], [unw_backtrace])
fi])

AC_CHECK_FUNCS(backtrace)

if test “x$ac_cv_func_backtrace” = xyes; then

AC_CACHE_CHECK(for broken backtrace, rb_cv_broken_backtrace,
  [AC_TRY_RUN([

include <unistd.h> include <stdio.h> include <stdlib.h> include <stdint.h> include <string.h> include <signal.h> include <execinfo.h>

define TRACE_SIZE 256

void sigsegv(int signum, siginfo_t *info, void *ctx){

void *trace[TRACE_SIZE];
int n = backtrace(trace, TRACE_SIZE);
if (n > 0) {
    /*fprintf(stdout, "backtrace:%d\n",n);*/
} else {
    _exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);

} int main(void) {

volatile int *a = NULL;
stack_t ss;
ss.ss_sp = malloc(SIGSTKSZ);
if (ss.ss_sp == NULL) {
    fprintf(stderr, "cannot allocate memory for sigaltstack\n");
    return EXIT_FAILURE;
}
ss.ss_size = SIGSTKSZ;
ss.ss_flags = 0;
if (sigaltstack(&ss, NULL) == -1) {
    fprintf(stderr, "sigaltstack failed\n");
    return EXIT_FAILURE;
}
struct sigaction sa;
memset(&sa, 0, sizeof(struct sigaction));
sigemptyset(&sa.sa_mask);
sa.sa_sigaction = sigsegv;
sa.sa_flags |= SA_SIGINFO;
sa.sa_flags |= SA_ONSTACK;
sigaction(SIGSEGV, &sa, NULL);
a[0] = 1;
return EXIT_SUCCESS;

} ],

      rb_cv_broken_backtrace=no,
      rb_cv_broken_backtrace=yes,
      rb_cv_broken_backtrace=no)])
if test "$rb_cv_broken_backtrace" = yes; then
  AC_DEFINE(BROKEN_BACKTRACE, 1)
fi

AC_ARG_WITH(valgrind,

AS_HELP_STRING([--without-valgrind],[disable valgrind memcheck support]),
[], with_valgrind=yes)

AS_IF([test x$with_valgrind != xno],

[AC_CHECK_HEADERS(valgrind/memcheck.h)])

dln_a_out_works=no if test “$ac_cv_header_a_out_h” = yes; then

if test "$with_dln_a_out" = yes || test "$rb_cv_dlopen" = unknown; then
  cat confdefs.h > config.h
  AC_CACHE_CHECK(whether matz's dln works, rb_cv_dln_a_out,
  [AC_TRY_COMPILE([

define USE_DLN_A_OUT include “dln.c” ],

      [],
      rb_cv_dln_a_out=yes,
      rb_cv_dln_a_out=no)])
  if test "$rb_cv_dln_a_out" = yes; then
    dln_a_out_works=yes
    AC_DEFINE(USE_DLN_A_OUT)
  fi
fi

if test “$dln_a_out_works” = yes; then

if test "$GCC" = yes; then
  STATIC=-static
else
  STATIC=-Bstatic
fi
DLEXT=so
CCDLFLAGS=

else

AS_CASE(["$target_os"],
  [hpux*], [
      DLEXT=sl],
  [darwin*], [
      RUBY_APPEND_OPTION(XLDFLAGS, [-Wl,-u,_objc_msgSend])
      DLEXT=bundle],
  [cygwin*|mingw*|*djgpp*], [
      LOAD_RELATIVE=1
      DLEXT=so],
  [
      DLEXT=so])

fi if test “$rb_cv_dlopen:$load_relative” = yes:yes; then

if test "$ac_cv_func_dladdr" = yes; then
    LOAD_RELATIVE=1
fi

fi if test x“$LOAD_RELATIVE” = x1; then

load_relative=yes

else

unset load_relative

len=2 # .rb n=`expr “$DLEXT” : '.*'`; test “$n” -gt “$len” && len=$n n=`expr “$DLEXT2” : '.*'`; test “$n” -gt “$len” && len=$n AC_DEFINE_UNQUOTED(DLEXT_MAXLEN, `expr $len + 1`) test “.$DLEXT” = “.” || AC_DEFINE_UNQUOTED(DLEXT, “.$DLEXT”) test “.$DLEXT2” = “.” || AC_DEFINE_UNQUOTED(DLEXT2, “.$DLEXT2”) AC_SUBST(DLEXT)

if test “$with_dln_a_out” = yes; then

STRIP=true

else

AC_CHECK_TOOL(STRIP, strip, :)dnl

AS_CASE(,

[linux* | gnu* | k*bsd*-gnu | kopensolaris*-gnu], [
      STRIP="$STRIP -S -x"],
[darwin*], [
      STRIP="$STRIP -A -n"])

AC_ARG_WITH(ext,

AC_HELP_STRING([--with-ext=EXTS],
               [pass to --with-ext option of extmk.rb]))

AC_ARG_WITH(out-ext,

AC_HELP_STRING([--with-out-ext=EXTS],
               [pass to --without-ext option of extmk.rb]))

EXTSTATIC= AC_SUBST(EXTSTATIC)dnl AC_ARG_WITH(static-linked-ext,

AS_HELP_STRING([--with-static-linked-ext], [link external modules statically]),
[AS_CASE([$withval],[yes],[STATIC=;EXTSTATIC=static],[no],[],[EXTSTATIC="$withval"])])

AS_CASE(, [,static,|*,enc,*], [

ENCOBJS='enc/encinit.$(OBJEXT) enc/libenc.$(LIBEXT) enc/libtrans.$(LIBEXT)'
EXTOBJS='ext/extinit.$(OBJEXT)'
AC_DEFINE_UNQUOTED(EXTSTATIC, 1)
AC_SUBST(ENCSTATIC, static)

], [

ENCOBJS='dmyenc.$(OBJEXT)'
EXTOBJS='dmyext.$(OBJEXT)'

]) AC_SUBST(ENCOBJS) AC_SUBST(EXTOBJS)

AC_ARG_WITH(setup,

AS_HELP_STRING([--with-setup=SETUP], [use extension libraries setup]),
[setup=$withval])

if test -n “$setup”; then

if ! test -f "ext/$setup" -o -f "$srcdir/ext/$setup"; then
    AC_MSG_ERROR(Setup file $setup not found under ext or $srcdir/ext)
fi

elif test -f “$srcdir/ext/Setup.$target_os”; then

setup="Setup.$target_os"

else

setup=
for file in "$srcdir"/ext/Setup.*; do
    AS_CASE(["$file"], [*~|*.bak|*.orig|*.rej|*.tmp], [continue])
    setup=`basename "$file"`
    AS_CASE(["$target_os"], [`expr "$setup" : 'Setup.\(.*\)'`*], [break])
    platform=`sed '/^option  *platform  */!d;s///;s/|/*|/g;q' "$file"`
    if test "x$platform" != x; then
        eval "AS_CASE([\"\$target_os\"], [$platform*], [break])"
    fi
    setup=
done
: ${setup:=Setup}

fi AC_SUBST(setup)

rubylibprefix='${libdir}/${RUBY_BASE_NAME}' AC_ARG_WITH(rubylibprefix,

AS_HELP_STRING([--with-rubylibprefix=DIR], [prefix for ruby libraries [[LIBDIR/RUBY_BASE_NAME]]]),
[if test "x$withval" = xno; then
    AC_MSG_ERROR([No ruby, No libprefix])
fi
rubylibprefix="$withval"])

AC_SUBST(rubylibprefix)

if test x“${exec_prefix}” != xNONE; then

RUBY_EXEC_PREFIX="$exec_prefix"

elif test x“$prefix” != xNONE; then

RUBY_EXEC_PREFIX="$prefix"

else

RUBY_EXEC_PREFIX=$ac_default_prefix

fi pat=`echo “${RUBY_EXEC_PREFIX}” | tr -c '012' .`'(.*)' for var in bindir libdir rubylibprefix; do

eval val='"$'$var'"'
AS_CASE(["$val"], ["${RUBY_EXEC_PREFIX}"*], [val='${exec_prefix}'"`expr \"$val\" : \"$pat\"`"])
eval $var='"$val"'

done

BTESTRUBY='$(MINIRUBY)' if test x“$cross_compiling” = xyes; then

test x"$MINIRUBY" = x && MINIRUBY="${RUBY-$BASERUBY} -I`$CHDIR .; pwd` "-r'$(arch)-fake'
XRUBY_LIBDIR=`${RUBY-$BASERUBY} -rrbconfig -e ['puts RbConfig::CONFIG["libdir"]']`
XRUBY_RUBYLIBDIR=`${RUBY-$BASERUBY} -rrbconfig -e ['puts RbConfig::CONFIG["rubylibdir"]']`
XRUBY_RUBYHDRDIR=`${RUBY-$BASERUBY} -rrbconfig -e ['puts RbConfig::CONFIG["rubyhdrdir"]']`
AC_SUBST(XRUBY_LIBDIR)
AC_SUBST(XRUBY_RUBYLIBDIR)
AC_SUBST(XRUBY_RUBYHDRDIR)
PREP='$(arch)-fake.rb'
RUNRUBY_COMMAND='$(MINIRUBY) -I`cd $(srcdir)/lib; pwd`'
RUNRUBY='$(RUNRUBY_COMMAND)'
XRUBY='$(MINIRUBY)'
BOOTSTRAPRUBY='$(BASERUBY)'
TEST_RUNNABLE=no
CROSS_COMPILING=yes

if test "$host_os" = "nacl"; then
    if test "$build_cpu" = "$host_cpu" || test "${nacl_cv_cpu_nick}" = "x86" -a "$host_cpu" = "i686"; then
        nacl_cv_sel_ldr='`$(MINIRUBY) $(srcdir)/nacl/nacl-config.rb sel_ldr`'
        nacl_cv_irt_core='`$(MINIRUBY) $(srcdir)/nacl/nacl-config.rb irt_core`'
        nacl_cv_runnable_ld='`$(MINIRUBY) $(srcdir)/nacl/nacl-config.rb runnable_ld`'
        nacl_cv_host_lib='`$(MINIRUBY) $(srcdir)/nacl/nacl-config.rb host_lib`'
        TEST_RUNNABLE=yes
        BTESTRUBY="${nacl_cv_sel_ldr} -a -B ${nacl_cv_irt_core} -w 1:3 -w 2:4"
        BTESTRUBY="$BTESTRUBY -- ${nacl_cv_runnable_ld} --library-path ${nacl_cv_host_lib}"
        BTESTRUBY="$BTESTRUBY `pwd`/"'miniruby$(EXEEXT) -I`cd $(srcdir)/lib; pwd` -I.'
        BTESTRUBY="$BTESTRUBY"' -I$(EXTOUT)/common 3>&1 4>&2 1>/dev/null 2>/dev/null '
    fi
fi

else

MINIRUBY='./miniruby$(EXEEXT) -I$(srcdir)/lib -I.'
MINIRUBY="$MINIRUBY"' -I$(EXTOUT)/common'
PREP='miniruby$(EXEEXT)'
RUNRUBY_COMMAND='$(MINIRUBY) $(srcdir)/tool/runruby.rb --extout=$(EXTOUT) $(RUNRUBYOPT)'
RUNRUBY='$(RUNRUBY_COMMAND) --'
XRUBY='$(RUNRUBY)'
BOOTSTRAPRUBY='$(MINIRUBY)'
TEST_RUNNABLE=yes
CROSS_COMPILING=no

fi AC_SUBST(TEST_RUNNABLE) AC_SUBST(CROSS_COMPILING) AC_SUBST(MINIRUBY) AC_SUBST(BTESTRUBY) AC_SUBST(PREP) AC_SUBST(RUNRUBY_COMMAND) AC_SUBST(RUNRUBY) AC_SUBST(XRUBY) AC_SUBST(BOOTSTRAPRUBY) AC_SUBST(EXTOUT, [${EXTOUT=.ext}])

FIRSTMAKEFILE=“” LIBRUBY_A='lib$(RUBY_SO_NAME)-static.a' LIBRUBY='$(LIBRUBY_A)' LIBRUBYARG_STATIC='-l$(RUBY_SO_NAME)-static' LIBRUBYARG='$(LIBRUBYARG_STATIC)' SOLIBS=

AS_CASE(,

[cygwin*|mingw*|haiku*|darwin*], [
  : ${DLDLIBS=""}
  ],
[
  DLDLIBS="$DLDLIBS -lc"
  ])

AC_ARG_ENABLE(multiarch,

AS_HELP_STRING([--enable-multiarch], [enable multiarch compatible directories]),
[multiarch=], [unset multiarch])

if test ${multiarch+set}; then

AC_DEFINE(ENABLE_MULTIARCH)

archlibdir='${libdir}/${arch}' sitearchlibdir='${libdir}/${sitearch}' archincludedir='${includedir}/${arch}' sitearchincludedir='${includedir}/${sitearch}'

AC_ARG_WITH(soname,

AS_HELP_STRING([--with-soname=SONAME], [base name of shared library]),
[RUBY_SO_NAME=$withval], [RUBY_SO_NAME='$(RUBY_BASE_NAME)'])

LIBRUBY_LDSHARED=$LDSHARED LIBRUBY_DLDFLAGS=$DLDFLAGS LIBRUBY_SO='lib$(RUBY_SO_NAME).so.$(RUBY_PROGRAM_VERSION)' LIBRUBY_ALIASES='lib$(RUBY_SO_NAME).so' ENABLE_SHARED=no

AC_ARG_ENABLE(shared,

AS_HELP_STRING([--enable-shared], [build a shared library for Ruby]),
[enable_shared=$enableval])

libprefix=${multiarch+'$(archlibdir)'}${multiarch-'$(libdir)'} LIBRUBY_RELATIVE=${load_relative-no} AS_CASE(“$enable_shared”, [yes], [

LIBRUBY='$(LIBRUBY_SO)'
LIBRUBYARG_SHARED='-l$(RUBY_SO_NAME)'
LIBRUBYARG='$(LIBRUBYARG_SHARED)'
LIBRUBY_RELATIVE=no
test -z "$CCDLFLAGS" || CFLAGS="$CFLAGS $CCDLFLAGS"
ENABLE_SHARED=yes
if test "$rb_cv_binary_elf" = yes; then
  SOLIBS='$(LIBS)'
fi

# libdir can be overridden in config.site file (on OpenSUSE at least).
libdir_basename=lib
if test "$bindir" = '${exec_prefix}/bin'; then
  AS_CASE(["$libdir"], ['${exec_prefix}/'*], [libdir_basename=`basename "$libdir"`])
fi
AC_DEFINE_UNQUOTED(LIBDIR_BASENAME, ["${libdir_basename}"])
libdir_basename="${libdir_basename}"${multiarch+'/${arch}'}

AS_CASE(["$target_os"],
  [freebsd*|dragonfly*], [],
  [
   if test "$GCC" = yes; then
     RUBY_TRY_LDFLAGS([${linker_flag}--no-undefined], [no_undefined=yes], [no_undefined=no])
     if test "no_undefined" = yes; then
        RUBY_APPEND_OPTION(EXTLDFLAGS, [${linker_flag}--no-undefined])
     fi
   fi
  ])

AS_CASE(["$target_os"],
  [sunos4*], [
      LIBRUBY_ALIASES='lib$(RUBY_SO_NAME).so.$(MAJOR).$(MINOR) lib$(RUBY_SO_NAME).so'
      ],
  [linux* | gnu* | k*bsd*-gnu | atheos* | kopensolaris*-gnu | haiku*], [
      RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ['-Wl,-soname,lib$(RUBY_SO_NAME).so.$(MAJOR).$(MINOR)' "$LDFLAGS_OPTDIR"])
      LIBRUBY_ALIASES='lib$(RUBY_SO_NAME).so.$(MAJOR).$(MINOR) lib$(RUBY_SO_NAME).so'
      if test "$load_relative" = yes; then
          libprefix="'\$\${ORIGIN}/../${libdir_basename}'"
          LIBRUBY_RPATHFLAGS="-Wl,-rpath,${libprefix}"
          LIBRUBY_RELATIVE=yes
      fi
      ],
  [freebsd*|dragonfly*], [
      SOLIBS='$(LIBS)'
      LIBRUBY_SO='lib$(RUBY_SO_NAME).so.$(MAJOR)$(MINOR)'
      if test "$rb_cv_binary_elf" != "yes" ; then
          LIBRUBY_SO="$LIBRUBY_SO.\$(TEENY)"
          LIBRUBY_ALIASES=''
      fi
      ],
  [netbsd*], [
      SOLIBS='$(LIBS)'
      LIBRUBY_SO='lib$(RUBY_SO_NAME).so.$(MAJOR)$(MINOR).$(TEENY)'
      RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ['-Wl,-soname,lib$(RUBY_SO_NAME).so.$(MAJOR)$(MINOR)' "$LDFLAGS_OPTDIR"])
      if test "$rb_cv_binary_elf" = yes; then # ELF platforms
         LIBRUBY_ALIASES='lib$(RUBY_SO_NAME).so.$(MAJOR)$(MINOR) lib$(RUBY_SO_NAME).so'
      else    # a.out platforms
         LIBRUBY_ALIASES=""
      fi
      ],
  [openbsd*|mirbsd*], [
      SOLIBS='$(LIBS)'
      LIBRUBY_SO='lib$(RUBY_SO_NAME).so.$(MAJOR).'`expr ${MINOR} \* 10 + ${TEENY}`
      ],
  [solaris*], [
      SOLIBS='$(LIBS)'
      LIBRUBY_SO='lib$(RUBY_SO_NAME).so.$(MAJOR)'
      LIBRUBY_ALIASES='lib$(RUBY_SO_NAME).so.$(RUBY_PROGRAM_VERSION) lib$(RUBY_SO_NAME).so'
      if test "$GCC" = yes; then
          LIBRUBY_DLDFLAGS="$DLDFLAGS "'-Wl,-h,$(@F)'
      else
          LIBRUBY_DLDFLAGS="$DLDFLAGS "'-h $(@F)'
      fi
      XLDFLAGS="$XLDFLAGS "'-R${libdir}'
      ],
  [hpux*], [
      XLDFLAGS="$XLDFLAGS "'-Wl,+s,+b,$(libdir)'
      LIBRUBY_SO='lib$(RUBY_SO_NAME).sl.$(RUBY_PROGRAM_VERSION)'
      LIBRUBY_ALIASES='lib$(RUBY_SO_NAME).sl.$(MAJOR).$(MINOR) lib$(RUBY_SO_NAME).sl'
      ],
  [aix*], [
      RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ["${linker_flag}-bnoentry" "$XLDFLAGS" "$LDFLAGS_OPTDIR"])
      LIBRUBYARG_SHARED='-L${libdir} -l${RUBY_SO_NAME}'
      SOLIBS='-lm -lc'
      ],
  [darwin*], [
      RUBY_SO_NAME="$RUBY_SO_NAME"'.$(RUBY_PROGRAM_VERSION)'
      LIBRUBY_LDSHARED='$(CC) -dynamiclib'
      if test "$load_relative" = yes; then
          libprefix="@executable_path/../${libdir_basename}"
          LIBRUBY_RELATIVE=yes
      fi
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-install_name '${libprefix}'/$(LIBRUBY_SO)'
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-compatibility_version $(MAJOR).$(MINOR)'
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-current_version $(RUBY_PROGRAM_VERSION)'
      if test "$visibility_option" = ld; then
          LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,_Init_*'
          LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,_ruby_static_id_*'
          LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,*_threadptr_*'
      fi
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "' $(XLDFLAGS)'
      LIBRUBY_SO='lib$(RUBY_SO_NAME).dylib'
      LIBRUBY_ALIASES='lib$(RUBY_BASE_NAME).$(MAJOR).$(MINOR).dylib lib$(RUBY_INSTALL_NAME).dylib'
      SOLIBS='$(LIBS)'
      ],
  [interix*], [
      LIBRUBYARG_SHARED='-L. -L${libdir} -l$(RUBY_SO_NAME)'
      ],
  [mingw*|cygwin*|mswin*], [
      LIBRUBY_RELATIVE=yes
      ])

], [

LIBRUBYARG_SHARED=

# enable PIE if possible
AC_ARG_ENABLE(pie,
        AS_HELP_STRING([--disable-pie], [disable PIE feature]),
        [pie=$enableval], [pie=])
AS_CASE(["$target_os"],
[nacl], [
  # -pie implies -shared for NaCl.
  pie=no
])
if test "$GCC" = yes -a -z "$EXTSTATIC" -a "x$pie" != xno; then
  RUBY_TRY_CFLAGS(-fPIE, [pie=yes], [pie=no])
  if test "$pie" = yes; then
    # Use -fPIE when testing -pie.  RUBY_TRY_LDFLAGS sets
    # $save_CFLAGS internally, so set other name here.
    save_CFLAGS_before_pie="$CFLAGS"
    CFLAGS="$CFLAGS -fPIE"

    # gcc need -pie but clang need -Wl,-pie.
    for pie in -pie -Wl,-pie; do
      RUBY_TRY_LDFLAGS([$pie], [], [pie=])
      if test "x$pie" != x; then
        RUBY_APPEND_OPTION(XCFLAGS, -fPIE)
        RUBY_APPEND_OPTION(XLDFLAGS, $pie)
        break
      fi
    done
    CFLAGS="$save_CFLAGS_before_pie"
  fi
fi

]) if test “$enable_rpath” = yes; then

test -z "$LIBRUBY_RPATHFLAGS" || LIBRUBY_RPATHFLAGS="$LIBRUBY_RPATHFLAGS "
rpathflag="${RPATHFLAG}"
AS_CASE(["${cross_compiling}${load_relative}"], [*yes*], [], [rpathflag="$RPATHFLAG$LIBPATHFLAG"])
rpathflag=`IFS="$PATH_SEPARATOR"
    echo x "$rpathflag" |
    sed "s/^x *//;s${IFS}"'%1\\$-s'"${IFS}${libprefix}${IFS}g;s${IFS}%s${IFS}${libprefix}${IFS}g"
`
LIBRUBY_RPATHFLAGS="$LIBRUBY_RPATHFLAGS${rpathflag}"
LIBRUBYARG_SHARED="$LIBRUBY_RPATHFLAGS $LIBRUBYARG_SHARED"
LIBRUBYARG_STATIC="$LIBRUBY_RPATHFLAGS $LIBRUBYARG_STATIC"

fi AC_SUBST(LIBRUBY_RELATIVE)

LDFLAGS=“-L. $LDFLAGS” AC_SUBST(ARCHFILE)

if test “$EXEEXT” = .exe; then

EXECUTABLE_EXTS='".exe",".com",".cmd",".bat"'
AC_DEFINE_UNQUOTED(EXECUTABLE_EXTS, $EXECUTABLE_EXTS)
EXECUTABLE_EXTS=`echo $EXECUTABLE_EXTS | tr -d '"' | tr , ' '`
AC_SUBST(EXECUTABLE_EXTS)

AS_CASE(“$cross_compiling:${LIBPATHENV}”, [yes:* | no:], [], [

AC_MSG_CHECKING(whether wrapper for $LIBPATHENV is needed)
AS_IF([env ${LIBPATHENV}=/lib /bin/sh -c ': ${'${LIBPATHENV}'?}' 2>/dev/null],
    [AC_MSG_RESULT(no)],
    [PREP="$PREP"' ruby-runner$(EXEEXT)'
    AC_MSG_RESULT(yes)]
)

])

AC_ARG_ENABLE(dtrace,

AS_HELP_STRING([--enable-dtrace],
[enable DTrace for tracing inside ruby. enabled by default on systems having dtrace]),
[enable_dtrace=$enableval], [enable_dtrace=auto])

LIBRUBY_A_OBJS='$(OBJS)' DTRACE_REBUILD= AS_CASE(, [yes|auto], [

RUBY_DTRACE_AVAILABLE()

], [

rb_cv_dtrace_available=no

]) AS_IF([test “${enable_dtrace}” = yes], [dnl

AS_IF([test -z "$DTRACE"], [dnl
    AC_MSG_ERROR([dtrace(1) is missing])
], [test "$cross_compiling" = yes], [dnl
    AC_MSG_ERROR([--enable-dtrace, however, cross compiling])
], [test "${rb_cv_dtrace_available}" = "no"], [dnl
   AC_MSG_ERROR([--enable-dtrace, however, USDT is not available])
])

]) AS_CASE(, [yes*], [dnl

RUBY_DTRACE_POSTPROCESS()
AS_IF([test "$rb_cv_prog_dtrace_g" != no], [dnl
    DTRACE_OBJ='probes.$(OBJEXT)'
])
AS_IF([test "$rb_cv_prog_dtrace_g" = rebuild], [dnl
    DTRACE_REBUILD=yes
    LIBRUBY_A_OBJS='$(DTRACE_GLOMMED_OBJ)'
])
AS_CASE("${target_os}", [freebsd*], [dnl
    # FreeBSD's dtrace requires libelf
    LIBS="-lelf $LIBS"
])
DTRACE_EXT=d

], [dnl

enable_dtrace=no
DTRACE_EXT=dmyh

]) AC_SUBST(DTRACE_EXT) AC_SUBST(DTRACE_OBJ) AC_SUBST(DTRACE_REBUILD) AC_SUBST(DTRACE_OPT) AC_SUBST(LIBRUBY_A_OBJS)

RUBY_SETJMP_TYPE } { # build section

dnl build rdoc index if requested RDOCTARGET=“” CAPITARGET=“” AC_ARG_ENABLE(install-doc,

AS_HELP_STRING([--disable-install-doc], [do not install either rdoc indexes or C API documents during install]),
[install_doc=$enableval], [install_doc=yes])

AC_ARG_ENABLE(install-rdoc,

AS_HELP_STRING([--disable-install-rdoc], [do not install rdoc indexes during install]),
[install_rdoc=$enableval], [install_rdoc=yes])

AC_ARG_ENABLE(install-capi,

AS_HELP_STRING([--disable-install-capi], [do not install C API documents during install]),
[install_capi=$enableval], [install_capi=no])

if test “$install_doc” != no; then

if test "$install_rdoc" != no; then
    RDOCTARGET="rdoc"
else
    RDOCTARGET="nodoc"
fi
if test "$install_capi" != no -a -n "$DOXYGEN"; then
    CAPITARGET="capi"
else
    CAPITARGET="nodoc"
fi

else

RDOCTARGET="nodoc"
CAPITARGET="nodoc"

AC_SUBST(RDOCTARGET) AC_SUBST(CAPITARGET)

AS_CASE(,[nodoc:nodoc],,[INSTALLDOC=all]) AC_SUBST(INSTALLDOC)

AC_ARG_ENABLE(install-static-library,

AS_HELP_STRING([--disable-install-static-library], [do not install static ruby library]),
[INSTALL_STATIC_LIBRARY=$enableval],
AS_IF([test x"$enable_shared" = xyes],
    [INSTALL_STATIC_LIBRARY=no],
    [INSTALL_STATIC_LIBRARY=yes]))

AC_SUBST(INSTALL_STATIC_LIBRARY)

if test “$rb_with_pthread” = “yes”; then

THREAD_MODEL=pthread

fi AC_CACHE_CHECK([for prefix of external symbols], rb_cv_symbol_prefix, [

AC_TRY_COMPILE([extern void conftest_external(void) {}], [], [
    rb_cv_symbol_prefix=`$NM conftest.$ac_objext |
                         sed -n ['/.*T[     ]\([^   ]*\)conftest_external.*/!d;s//\1/p;q']`
    ],
    [rb_cv_symbol_prefix=''])
test -n "$rb_cv_symbol_prefix" || rb_cv_symbol_prefix=NONE

]) SYMBOL_PREFIX=“$rb_cv_symbol_prefix” test “x$SYMBOL_PREFIX” = xNONE && SYMBOL_PREFIX='' DLNOBJ=dln.o AC_ARG_ENABLE(dln,

AC_HELP_STRING([--disable-dln], [disable dynamic link feature]),
[test "$enableval" = yes || DLNOBJ=dmydln.o])

AC_SUBST(DLNOBJ) MINIDLNOBJ=dmydln.o

AS_CASE(,

[linux*], [
    ],
[netbsd*], [
    RUBY_APPEND_OPTION(CFLAGS, -pipe)
    ],
[darwin*], [
    RUBY_APPEND_OPTION(CFLAGS, -pipe)
    RUBY_APPEND_OPTION(XLDFLAGS, [-framework Foundation])
    RUBY_APPEND_OPTION(LIBRUBYARG_STATIC, [-framework Foundation])
    ],
[osf*], [
    if test "$GCC" != "yes" ; then
      # compile something small: taint.c is fine for this.
      # the main point is the '-v' flag of 'cc'.
      AS_CASE(["`cc -v -I. -c main.c -o /tmp/main.o 2>&1`"],
      [*/gemc_cc*], [   # we have the new DEC GEM CC
                    CFLAGS="$CFLAGS -oldc"
                    ],
      [            # we have the old MIPS CC
                    ])
      # cleanup
      rm -f /tmp/main.o
      CFLAGS="$CFLAGS -std"
    fi
    ],
[cygwin*|mingw*], [
    RUBY_SO_NAME="${RUBY_SO_NAME}"'$(MAJOR)$(MINOR)0'
    LIBRUBY_DLDFLAGS="${DLDFLAGS}"' -Wl,--out-implib=$(LIBRUBY)'
    AS_CASE(["$target_os"],
    [cygwin*], [
        if test x"$enable_shared" = xyes; then
            LIBRUBY_SO='cyg$(RUBY_SO_NAME)'.dll
            LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
        fi
        ],
    [mingw*], [
        RUBY_SO_NAME="${rb_cv_msvcrt}-${RUBY_SO_NAME}"
        if test x"${target_cpu}" != xi386; then
            RUBY_SO_NAME="${target_cpu}-${RUBY_SO_NAME}"
        fi
        if test x"$enable_shared" = xyes; then
            LIBRUBY_SO='$(RUBY_SO_NAME)'.dll
            LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
        fi
        EXPORT_PREFIX=' '
        DLDFLAGS="${DLDFLAGS}"' $(DEFFILE)'
        AC_LIBOBJ([win32/win32])
        AC_LIBOBJ([win32/file])
        COMMON_LIBS=m

# COMMON_MACROS=“WIN32_LEAN_AND_MEAN=”

        COMMON_HEADERS="winsock2.h windows.h"
        THREAD_MODEL=win32
        PLATFORM_DIR=win32
        ])
    LIBRUBY_ALIASES=''
    FIRSTMAKEFILE=GNUmakefile:cygwin/GNUmakefile.in
    SOLIBS='$(LIBS)'
    if test x"$enable_shared" = xyes; then
        LIBRUBY='lib$(RUBY_SO_NAME).dll.a'
    else
        LIBRUBY_SO=dummy
        LIBRUBY='lib$(RUBY_SO_NAME).a'
        LIBRUBYARG='-l$(RUBY_SO_NAME)'
    fi
    ],
[hpux*], [
    AS_CASE(["$YACC"],[*yacc*], [
        XCFLAGS="$XCFLAGS -DYYMAXDEPTH=300"
        YACC="$YACC -Nl40000 -Nm40000"
    ])],
[nacl], [
    FIRSTMAKEFILE=GNUmakefile:nacl/GNUmakefile.in
    ])

MINIOBJS=“$MINIDLNOBJ”

AS_CASE(, [pthread], [AC_CHECK_HEADERS(pthread.h)], [win32], [], [“”], [AC_MSG_ERROR(thread model is missing)],

[AC_MSG_ERROR(unknown thread model $THREAD_MODEL)])

AC_ARG_ENABLE(debug-env,

AS_HELP_STRING([--enable-debug-env], [enable RUBY_DEBUG environment variable]),
[AC_DEFINE(RUBY_DEBUG_ENV)])

AS_CASE(, [GNUmakefile:], [gnumake=yes], [

AC_MSG_CHECKING([if ${MAKE-make} is GNU make])
mkdir conftest.dir
echo "all:; @echo yes" > conftest.dir/GNUmakefile
echo "all:; @echo no" > conftest.dir/Makefile
gnumake=`(cd conftest.dir; ${MAKE-make})`
rm -fr conftest.dir
AS_CASE(["$gnumake"],
[*yes*], [
    FIRSTMAKEFILE=GNUmakefile:template/GNUmakefile.in
    gnumake=yes],
[
    gnumake=no])
AC_MSG_RESULT($gnumake)

]) AS_IF([test “$gnumake” = yes], [ NULLCMD=: ], [

AC_MSG_CHECKING([for safe null command for ${MAKE-make}])
mkdir conftest.dir
NULLCMD=
for cmd in : true; do
    echo 'A=1' > conftest.dir/Makefile
    echo 'B=$(A:1=@'$cmd')' >> conftest.dir/Makefile
    echo 'all:; $B 1 2 3 4 5 6 7 8 9' >> conftest.dir/Makefile
    if (cd conftest.dir; ${MAKE-make} >/dev/null 2>/dev/null); then
        NULLCMD=$cmd
        break
    fi
done
rm -fr conftest.dir
if test -z "$NULLCMD"; then
    AC_MSG_ERROR(no candidate for safe null command)
fi
AC_MSG_RESULT($NULLCMD)

]) AC_SUBST(NULLCMD)

if test “${universal_binary-no}” = yes ; then

AC_CACHE_CHECK([for architecture macros], rb_cv_architecture_macros, [
mv confdefs.h confdefs1.h
: > confdefs.h
AC_TRY_COMPILE([@%:@if defined __`echo ${universal_archnames} |
sed 's/=[^ ]*//g;s/ /__ || defined __/g'`__

@%:@else @%:@error >>>>>><<<<<< @%:@endif], [], [

rb_cv_architecture_macros=yes
mv -f confdefs1.h confdefs.h

], [

rb_cv_architecture_macros=no
archflagpat=`eval echo '"'"${ARCH_FLAG}"'"' | sed 's/[[][|.*]]/\\&/g'`
new_cflags=`echo "$CFLAGS" | sed "s|$archflagpat"'||'`
for archs in ${universal_archnames}; do
    cpu=${archs@%:@*=}
    archs=${archs%=*}
    CFLAGS="$new_cflags -arch $archs"
    archs="__${archs}__"
    AC_MSG_CHECKING([for macro ${archs} on ${cpu}])
    AC_TRY_COMPILE([@%:@ifndef ${archs}

@%:@error @%:@endif], [], [AC_MSG_RESULT()], [AC_MSG_RESULT()])

done
mv -f confdefs1.h confdefs.h
AC_MSG_ERROR([failed])
])])
AC_CACHE_CHECK(whether __ARCHITECTURE__ is available, rb_cv_architecture_available,
    AC_TRY_COMPILE([@%:@include <stdio.h>
            const char arch[[]] = __ARCHITECTURE__;], [puts(arch);],
            [rb_cv_architecture_available=yes], [rb_cv_architecture_available=no]))

CPPFLAGS=“$CPPFLAGS ”'$(DEFS)' test -z “$CPPFLAGS” || CPPFLAGS=“$CPPFLAGS ”; CPPFLAGS=“$CPPFLAGS”'${cppflags}' if test -n “${cflags+set}”; then

cflagspat=`eval echo '"'"${cflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^  */ /;s/^  *$/ /'`
CFLAGS=`echo " $CFLAGS " | sed "s|$cflagspat"'|${cflags}|;s/^ *//;s/ *$//'`

fi if test -n “${cxxflags+set}”; then

cxxflagspat=`eval echo '"'"${cxxflags}"'"' | sed 's/[[][|.*]]/\\&/g;s/^  */ /;s/^  *$/ /'`
CXXFLAGS=`echo " $CXXFLAGS " | sed "s|$cxxflagspat"'|${cxxflags}|;s/^ *//;s/ *$//'`

fi if test “${ARCH_FLAG}”; then

archflagpat=`eval echo '"'"${ARCH_FLAG}"'"' | sed 's/[[][|.*]]/\\&/g'`
CFLAGS=`echo "$CFLAGS" | sed "s| *$archflagpat"'||'`
CXXFLAGS=`echo "$CXXFLAGS" | sed "s| *$archflagpat"'||'`
LDFLAGS=`echo "$LDFLAGS" | sed "s| *$archflagpat"'||'`

fi warnflags=“$rb_cv_warnflags” AC_SUBST(cppflags)dnl AC_SUBST(cflags, [“${orig_cflags:+$orig_cflags }”'${optflags} ${debugflags} ${warnflags}'])dnl AC_SUBST(cxxflags, [“${orig_cxxflags:+$orig_cxxflags }”'${optflags} ${debugflags} ${warnflags}'])dnl AC_SUBST(optflags)dnl AC_SUBST(debugflags)dnl AC_SUBST(warnflags)dnl AC_SUBST(strict_warnflags)dnl AC_SUBST(XCFLAGS)dnl AC_SUBST(XLDFLAGS)dnl AC_SUBST(EXTLDFLAGS)dnl AC_SUBST(EXTDLDFLAGS)dnl AC_SUBST(LIBRUBY_LDSHARED) AC_SUBST(LIBRUBY_DLDFLAGS) AC_SUBST(RUBY_INSTALL_NAME) AC_SUBST(rubyw_install_name) AC_SUBST(RUBYW_INSTALL_NAME) AC_SUBST(RUBY_SO_NAME) AC_SUBST(LIBRUBY_A) AC_SUBST(LIBRUBY_SO) AC_SUBST(LIBRUBY_ALIASES) AC_SUBST(LIBRUBY) AC_SUBST(LIBRUBYARG) AC_SUBST(LIBRUBYARG_STATIC) AC_SUBST(LIBRUBYARG_SHARED) AC_SUBST(SOLIBS) AC_SUBST(DLDLIBS) AC_SUBST(ENABLE_SHARED) AC_SUBST(MAINLIBS) AC_SUBST(COMMON_LIBS) AC_SUBST(COMMON_MACROS) AC_SUBST(COMMON_HEADERS) AC_SUBST(EXPORT_PREFIX) AC_SUBST(SYMBOL_PREFIX) AC_SUBST(MINIOBJS) AC_SUBST(THREAD_MODEL) AC_SUBST(PLATFORM_DIR)

firstmf=`echo $FIRSTMAKEFILE | sed 's/:.*//'` firsttmpl=`echo $FIRSTMAKEFILE | sed 's/.*://'` MAKEFILES=“Makefile $firstmf” MAKEFILES=“`echo $MAKEFILES`” AC_SUBST(MAKEFILES)

ri_prefix= test “$program_prefix” != NONE &&

ri_prefix=$program_prefix

ri_suffix= test “$program_suffix” != NONE &&

ri_suffix=$program_suffix

RUBY_INSTALL_NAME=“${ri_prefix}”'$(RUBY_BASE_NAME)'“${ri_suffix}” AS_CASE(,

[cygwin*|mingw*], [
  RUBYW_INSTALL_NAME="${ri_prefix}"'$(RUBYW_BASE_NAME)'"${ri_suffix}"
  rubyw_install_name='$(RUBYW_INSTALL_NAME)'
  ])

rubylibdir='${rubylibprefix}/${ruby_version}' rubyarchdir=${multiarch+'${rubyarchprefix}/${ruby_version}'}${multiarch-'${rubylibdir}/${arch}'}

rubyarchprefix=${multiarch+'${archlibdir}/${RUBY_BASE_NAME}'}${multiarch-'${rubylibprefix}/${arch}'} AC_ARG_WITH(rubyarchprefix,

AS_HELP_STRING([--with-rubyarchprefix=DIR],
               [prefix for architecture dependent ruby libraries [[RUBYLIBPREFIX/ARCH]]]),
[rubyarchprefix="$withval"])

AC_SUBST(rubyarchprefix)

rubysitearchprefix=${multiarch+'${sitearchlibdir}/${RUBY_BASE_NAME}'}${multiarch-'${rubylibprefix}/${sitearch}'} AC_ARG_WITH(rubysitearchprefix,

AS_HELP_STRING([--with-rubysitearchprefix=DIR],
               [prefix for architecture dependent site libraries [[RUBYLIBPREFIX/SITEARCH]]]),
[rubysitearchprefix="$withval"])

AC_SUBST(rubysitearchprefix)

RI_BASE_NAME=`echo ${RUBY_BASE_NAME} | sed 's/ruby/ri/'` ridir='${datarootdir}/${RI_BASE_NAME}' AC_ARG_WITH(ridir,

AS_HELP_STRING([--with-ridir=DIR], [ri documentation [[DATAROOTDIR/ri]]]),
[ridir=$withval])

AC_SUBST(ridir) AC_SUBST(RI_BASE_NAME)

AC_ARG_WITH(ruby-version,

AS_HELP_STRING([--with-ruby-version=STR], [ruby version string for version specific directories [[full]] (full|minor|STR)]),
[ruby_version=$withval],
[ruby_version=full])

unset RUBY_LIB_VERSION unset RUBY_LIB_VERSION_STYLE AS_CASE(,

[full],  [RUBY_LIB_VERSION_STYLE='3   /* full */'],
[minor], [RUBY_LIB_VERSION_STYLE='2   /* minor */'])

if test ${RUBY_LIB_VERSION_STYLE+set}; then

{
echo "#define RUBY_LIB_VERSION_STYLE $RUBY_LIB_VERSION_STYLE"
echo '#define STRINGIZE(x) x'
test -f revision.h -o -f "${srcdir}/revision.h" || echo '#define RUBY_REVISION 0'
echo '#include "version.h"'
echo 'ruby_version=RUBY_LIB_VERSION'
} > conftest.c
ruby_version="`$CPP -I. -I"${srcdir}" -I"${srcdir}/include" conftest.c | sed '/^ruby_version=/!d;s/ //g'`"
eval $ruby_version

elif test -z “${ruby_version}”; then

AC_MSG_ERROR([No ruby version, No place for bundled libraries])

else

RUBY_LIB_VERSION="${ruby_version}"

fi AC_SUBST(RUBY_LIB_VERSION_STYLE) AC_SUBST(RUBY_LIB_VERSION)

AC_ARG_WITH(sitedir,

AS_HELP_STRING([--with-sitedir=DIR], [site libraries in DIR [[RUBY_LIB_PREFIX/site_ruby]], "no" to disable site directory]),
[sitedir=$withval],
[sitedir='${rubylibprefix}/site_ruby'])

sitelibdir='${sitedir}/${ruby_version}'

AC_ARG_WITH(sitearchdir,

AS_HELP_STRING([--with-sitearchdir=DIR],
               [architecture dependent site libraries in DIR [[SITEDIR/SITEARCH]], "no" to disable site directory]),
[sitearchdir=$withval],
[sitearchdir=${multiarch+'${rubysitearchprefix}/site_ruby/${ruby_version}'}${multiarch-'${sitelibdir}/${sitearch}'}])

AC_ARG_WITH(vendordir,

AS_HELP_STRING([--with-vendordir=DIR], [vendor libraries in DIR [[RUBY_LIB_PREFIX/vendor_ruby]], "no" to disable vendor directory]),
[vendordir=$withval],
[vendordir='${rubylibprefix}/vendor_ruby'])

vendorlibdir='${vendordir}/${ruby_version}'

AC_ARG_WITH(vendorarchdir,

AS_HELP_STRING([--with-vendorarchdir=DIR],
               [architecture dependent vendor libraries in DIR [[VENDORDIR/SITEARCH]], "no" to disable vendor directory]),
[vendorarchdir=$withval],
[vendorarchdir=${multiarch+'${rubysitearchprefix}/vendor_ruby/${ruby_version}'}${multiarch-'${vendorlibdir}/${sitearch}'}])

if test “${LOAD_RELATIVE+set}”; then

AC_DEFINE_UNQUOTED(LOAD_RELATIVE, $LOAD_RELATIVE)
RUBY_EXEC_PREFIX=''

AC_SUBST(RUBY_EXEC_PREFIX)

AC_SUBST(libdirname, ${multiarch+arch}libdir) AC_SUBST(archlibdir)dnl AC_SUBST(sitearchlibdir)dnl AC_SUBST(archincludedir)dnl AC_SUBST(sitearchincludedir)dnl AC_SUBST(arch)dnl AC_SUBST(sitearch)dnl AC_SUBST(ruby_version)dnl AC_SUBST(rubylibdir)dnl AC_SUBST(rubyarchdir)dnl AC_SUBST(sitedir)dnl AC_SUBST(sitelibdir)dnl AC_SUBST(sitearchdir)dnl AC_SUBST(vendordir)dnl AC_SUBST(vendorlibdir)dnl AC_SUBST(vendorarchdir)dnl

AC_SUBST(CONFIGURE, “`echo $0 | sed 's|.*/||'`”)dnl AC_SUBST(configure_args, “`echo ”${ac_configure_args}“ | sed 's/\$/$$/g'`”)dnl

if test “${universal_binary-no}” = yes ; then

arch="universal-${target_os}"
if test "${rb_cv_architecture_available}" = yes; then
    AC_DEFINE_UNQUOTED(RUBY_PLATFORM_CPU, __ARCHITECTURE__)
else
    for archs in ${universal_archnames}; do
        cpu=`echo $archs | sed 's/.*=//'`
        archs=`echo $archs | sed 's/=.*//'`
        RUBY_DEFINE_IF([defined __${archs}__], RUBY_PLATFORM_CPU, ["${cpu}"])
    done
fi
ints='long int short'
test "$ac_cv_type_long_long" = yes && ints="'long long' $ints"
AC_SUBST(UNIVERSAL_ARCHNAMES, "${universal_archnames}")
AC_SUBST(UNIVERSAL_INTS, "${ints}")
AC_DEFINE_UNQUOTED(RUBY_PLATFORM_OS, "${target_os}")
AC_DEFINE_UNQUOTED(RUBY_ARCH, "universal-"RUBY_PLATFORM_OS)
AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "universal."RUBY_PLATFORM_CPU"-"RUBY_PLATFORM_OS)

else

arch="${target_cpu}-${target_os}"
AS_CASE(["$arch"], [le32-nacl], [arch="pnacl"])
AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "$arch")

unset sitearch AS_CASE(,[mingw*],) : ${sitearch='${arch}'}

AC_ARG_WITH(search-path,

AS_HELP_STRING([--with-search-path=DIR], [specify the additional search path]),
[search_path=$withval])

if test “$search_path” != “”; then

AC_SUBST(RUBY_SEARCH_PATH, $search_path)

AC_ARG_WITH(rubyhdrdir,

AS_HELP_STRING([--with-rubyhdrdir=DIR], [core headers in DIR [[INCLUDEDIR/RUBY_BASE_NAME-RUBY_VERSION]]]),
[rubyhdrdir=$withval],
[rubyhdrdir='${includedir}/${RUBY_VERSION_NAME}'])

AC_ARG_WITH(rubyarchhdrdir,

AS_HELP_STRING([--with-rubyarchhdrdir=DIR],
               [architecture dependent core headers in DIR [[$(rubyhdrdir)/$(arch)]]]),
[rubyarchhdrdir=$withval],
[rubyarchhdrdir=${multiarch+'${archincludedir}/${RUBY_VERSION_NAME}'}${multiarch-'${rubyhdrdir}/${arch}'}])

AC_ARG_WITH(sitehdrdir,

AS_HELP_STRING([--with-sitehdrdir=DIR], [core site headers in DIR [[RUBYHDRDIR/site_ruby]]]),
[sitehdrdir=$withval],
[sitehdrdir='${rubyhdrdir}/site_ruby'])

AC_ARG_WITH(sitearchhdrdir,

AS_HELP_STRING([--with-sitearchhdrdir=DIR],
               [architecture dependent core site headers in DIR [[RUBYHDRDIR/site_ruby]]]),
[sitearchhdrdir=$withval],
[sitearchhdrdir=${multiarch+'${sitearchincludedir}/${RUBY_VERSION_NAME}/site_ruby'}${multiarch-'${sitehdrdir}/${sitearch}'}])

AC_ARG_WITH(vendorhdrdir,

AS_HELP_STRING([--with-vendorhdrdir=DIR], [core vendor headers in DIR [[RUBYHDRDIR/vendor_ruby]]]),
[vendorhdrdir=$withval],
[vendorhdrdir='${rubyhdrdir}/vendor_ruby'])

AC_ARG_WITH(vendorarchhdrdir,

AS_HELP_STRING([--with-vendorarchhdrdir=DIR],
               [architecture dependent core vendor headers in DIR [[RUBYHDRDIR/vendor_ruby]]]),
[vendorarchhdrdir=$withval],
[vendorarchhdrdir=${multiarch+'${sitearchincludedir}/${RUBY_VERSION_NAME}/vendor_ruby'}${multiarch-'${vendorhdrdir}/${sitearch}'}])

AC_SUBST(rubyhdrdir)dnl AC_SUBST(sitehdrdir)dnl AC_SUBST(vendorhdrdir)dnl AC_SUBST(rubyarchhdrdir)dnl AC_SUBST(sitearchhdrdir)dnl AC_SUBST(vendorarchhdrdir)dnl

AC_ARG_WITH(mantype,

AS_HELP_STRING([--with-mantype=TYPE], [specify man page type; TYPE is one of man and doc]),
        [
                AS_CASE(["$withval"],
                [man|man.gz|man.bz2|doc|doc.gz|doc.bz2], [MANTYPE=$withval],
                [AC_MSG_ERROR(invalid man type: $withval)])
        ])

if test -z “$MANTYPE”; then

AC_PATH_PROGS(NROFF, nroff awf, /bin/false, "/usr/bin:/usr/ucb")
if ${NROFF} -mdoc ${srcdir}/man/ruby.1 >/dev/null 2>&1; then
        MANTYPE=doc
else
        MANTYPE=man
fi

fi AC_SUBST(MANTYPE)

AC_ARG_ENABLE(rubygems,

AS_HELP_STRING([--disable-rubygems], [disable rubygems by default]),
[enable_rubygems="$enableval"], [enable_rubygems=yes])

if test x“$enable_rubygems” = xno; then

AC_DEFINE(DISABLE_RUBYGEMS, 1)
USE_RUBYGEMS=NO

else

USE_RUBYGEMS=YES

fi AC_SUBST(USE_RUBYGEMS)

arch_hdrdir=“${EXTOUT}/include/${arch}/ruby” AS_MKDIR_P(“${arch_hdrdir}”) config_h=“${arch_hdrdir}/config.h” guard=INCLUDE_RUBY_CONFIG_H {

echo "#ifndef $guard"
echo "#define $guard 1"
grep -v "^#define PACKAGE_" confdefs.h
echo "#endif /* $guard */"

} | tr -d '015' | (

if test "x$CONFIGURE_TTY" = xyes; then color=--color; else color=; fi
exec ${srcdir}/tool/ifchange $color "${config_h}" -

) || AC_MSG_ERROR([failed to create ${config_h}]) tr -d '015' < largefile.h > confdefs.h rm largefile.h

BUILTIN_ENCS=[“`sed -n -e '/^BUILTIN_ENCS[ ]*=/{' \

-e s/// -e :l -e '/\\\\$/N' -e 's/\\\\\\n/ /' -e 't l' -e p \
-e '}' "${srcdir}/enc/Makefile.in"`"]

BUILTIN_ENCOBJS= for e in $BUILTIN_ENCS; do BUILTIN_ENCOBJS=“$BUILTIN_ENCOBJS ”`echo $e | sed 's/.c$/.$(OBJEXT)/'`; done AC_SUBST(BUILTIN_ENCOBJS)

BUILTIN_TRANSES=[“`sed -n -e '/^BUILTIN_TRANSES[ ]*=/{' \

-e s/// -e :l -e '/\\\\$/N' -e 's/\\\\\\n/ /' -e 't l' -e p \
-e '}' "${srcdir}/enc/Makefile.in"`"]

BUILTIN_TRANSSRCS= BUILTIN_TRANSOBJS= for e in $BUILTIN_TRANSES; do

BUILTIN_TRANSSRCS="$BUILTIN_TRANSSRCS "`echo $e | sed 's/\.trans$/.c/'`
BUILTIN_TRANSOBJS="$BUILTIN_TRANSOBJS "`echo $e | sed 's/\.trans$/.$(OBJEXT)/'`

done AC_SUBST(BUILTIN_TRANSSRCS) AC_SUBST(BUILTIN_TRANSOBJS)

PACKAGE=$RUBY_BASE_NAME AC_SUBST(PACKAGE) AS_MESSAGE([$PACKAGE library version = $ruby_version])

AS_CASE([“ $CPP ”], [*“ $CC ”*], [CPP=`echo “ $CPP ” | sed “s| $CC |”' $(CC) |;s/^ *//;s/ *$//'`])

if test x“$firstmf” != x; then

AC_CONFIG_FILES($firstmf:$firsttmpl, [], [firstmf="$firstmf" firsttmpl="$firsttmpl"])

fi AC_CONFIG_FILES(Makefile, [

tmpmk=confmk$$.tmp
{
    if test ${VCS+set}; then
        :
    elif svn info "$srcdir" > /dev/null 2>&1; then
        VCS='svn'
    elif git_dir=`git --work-tree="$srcdir" --git-dir="$srcdir/.git" rev-parse --git-dir 2>/dev/null`; then
        if test -d "$git_dir/svn"; then
            VCS='git svn'
        else
            VCS='git'
        fi
    else
        VCS='echo cannot'
    fi
    AS_CASE("$VCS",
            [svn],       [VCSUP='$(VCS) up $(SVNUPOPTIONS)'],
            ["git svn"], [VCSUP='$(VCS) rebase $(GITSVNREBASEOPTIONS)'],
            [git],       [VCSUP='$(VCS) pull $(GITPULLOPTIONS)'],
            [VCSUP='$(VCS)'])
    sed -n \
        -e '[/^@%:@define \(RUBY_RELEASE_[A-Z]*\) \([0-9][0-9]*\)/]{' \
        -e   's//\1 = \2/' \
        -e   '[s/ \([0-9]\)$/ 0\1/]' \
        -e   p \
        -e '}' "$srcdir/version.h"
    sed '/^MISSING/s/\$U\././g;/^VCS *=/s#@VCS@#'"$VCS"'#;/^VCSUP *=/s#@VCSUP@#'"$VCSUP"'#' Makefile
    echo; test x"$EXEEXT" = x || echo 'miniruby: miniruby$(EXEEXT)'
    if test "$gnumake" != yes; then
        echo ['$(MKFILES): $(srcdir)/common.mk']
        sed ['s/{\$([^(){}]*)[^{}]*}//g'] ${srcdir}/common.mk
    else
        echo 'distclean-local::; @$(RM) GNUmakefile uncommon.mk'
    fi
} > $tmpmk && if ! grep '^ruby:' $tmpmk > /dev/null; then
    if test "${gnumake}" = yes; then
        tmpgmk=confgmk$$.tmp
        {
            echo "include $tmpmk"
            echo "-include uncommon.mk"
        } > $tmpgmk
    else
        tmpgmk=$tmpmk
    fi &&
    test -z "`${MAKE-make} -f $tmpgmk info-program | grep '^PROGRAM=ruby$'`" &&
    echo 'ruby: $(PROGRAM);' >> $tmpmk
    test "$tmpmk" = "$tmpgmk" || rm -f "$tmpgmk"
fi && mv -f $tmpmk Makefile],

[EXEEXT='$EXEEXT' gnumake='$gnumake'])

AC_ARG_WITH(,

AC_HELP_STRING([--with-ruby-pc=FILENAME], [pc file basename]),
[ruby_pc="$withval"],
[ruby_pc="${RUBY_BASE_NAME}-${MAJOR}.${MINOR}.pc"])

AC_SUBST(ruby_pc) AC_SUBST(exec, [exec])

AC_ARG_WITH(destdir,

AS_HELP_STRING([--with-destdir=DESTDIR], [specify default directory to install]),
[DESTDIR="$withval"])

AC_SUBST(DESTDIR)

AC_CONFIG_FILES($ruby_pc:template/ruby.pc.in,

[
if sed ['s/\$(\([A-Za-z_][A-Za-z0-9_]*\))/${\1}/g;s/@[A-Za-z_][A-Za-z0-9_]*@//'] $ruby_pc > ruby.tmp.pc &&
    {
        test -z "$PKG_CONFIG" ||
        PKG_CONFIG_PATH=. $PKG_CONFIG --print-errors ruby.tmp
    }
then
    mv -f ruby.tmp.pc $ruby_pc
else
    exit 1
fi
],
[ruby_pc='$ruby_pc' PKG_CONFIG='$PKG_CONFIG'])

AC_OUTPUT } }

AS_IF([${FOLD+:} false], [], [ AS_IF([test “`echo abcdefg hijklmno | fold -s -w10 | sed 1d`” = hijklmno], [FOLD=“fold”], [FOLD=]) ]) AS_REQUIRE_SHELL_FN(,

[AS_FUNCTION_DESCRIBE([config_summary], [NAME, VAL], [configuration summary])],
[AS_IF([test -z "$2"], [], [
    AS_ECHO_N(["   * $1:                     "]) | head -c26
    AS_IF([test "$FOLD"], [
        echo "$2" | fold -s -w50 |
        sed '1!s/^/                          /;$!s/$/\\/'
    ], [echo "$2"])
])]

)

echo “—” echo “Configuration summary for $RUBY_BASE_NAME version $RUBY_PROGRAM_VERSION” echo “” config_summary “Installation prefix” “$prefix” config_summary “exec prefix” “$exec_prefix” config_summary “arch” “$arch” config_summary “site arch” “$sitearch” config_summary “RUBY_BASE_NAME” “$RUBY_BASE_NAME” config_summary “enable shared” “$enable_shared” config_summary “ruby lib prefix” “$rubylibprefix” config_summary “site libraries path” “$rubysitearchprefix” config_summary “vendor path” “$vendordir” config_summary “target OS” “$target_os” config_summary “compiler” “$CC” config_summary “with pthread” “$enable_pthread” config_summary “enable shared libs” “$ENABLE_SHARED” config_summary “dynamic library ext” “$DLEXT” config_summary “CFLAGS” “$cflags” config_summary “CPPFLAGS” “$cppflags” config_summary “LDFLAGS” “$LDFLAGS” config_summary “optflags” “$optflags” config_summary “debugflags” “$debugflags” config_summary “warnflags” “$warnflags” config_summary “strip command” “$STRIP” config_summary “install doc” “$install_doc” config_summary “man page type” “$MANTYPE” config_summary “search path” “$search_path” config_summary “static-linked-ext” ${EXTSTATIC:+“yes”} echo “” echo “—”

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