File: configure.ac [Ruby 3.0.1]

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dnl Process this file with autoconf to produce a configure script. AC_INIT() { AC_CONFIG_AUX_DIR(tool) AC_CONFIG_MACRO_DIRS(tool/m4)

AC_PREREQ(2.67)

tooldir=“$srcdir/tool”

dnl override AC_CHECKING dnl placed here due to aclocal(1)‘s dnl ignoring this definition in separate files AC_DEFUN(,[dnl AC_REQUIRE()dnl AS_MESSAGE([checking ${msg_checking}$1${msg_reset}…])])dnl

AC_DISABLE_OPTION_CHECKING

AC_ARG_VAR(, [additional CFLAGS (ignored when CFLAGS is given)]) AC_ARG_VAR(, [additional CPPFLAGS (ignored when CPPFLAGS is given)]) AC_ARG_VAR(, [additional CXXFLAGS (ignored when CXXFLAGS is given)])

: “environment section” && { HAVE_BASERUBY=yes BASERUBY_VERSION= 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],
    [no],[HAVE_BASERUBY=no],
    [AC_MSG_ERROR(need ruby)])
],
[
        AC_PATH_PROG([BASERUBY], [ruby], [false])
])

AS_IF([test “$HAVE_BASERUBY” != no -a “`RUBYOPT=- $BASERUBY –disable=gems -e ‘print 42 if RUBY_VERSION > ”2.2“’ 2>/dev/null`” = 42], [

BASERUBY="$BASERUBY --disable=gems"
BASERUBY_VERSION=`$BASERUBY -v`
$BASERUBY -C "$srcdir" tool/downloader.rb -d tool -e gnu config.guess config.sub >&AS_MESSAGE_FD

], [

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

]) AC_SUBST(BASERUBY) AC_SUBST(HAVE_BASERUBY)

: ${GIT=git} HAVE_GIT=yes AC_ARG_WITH(git,

AS_HELP_STRING([--without-git], [never use git]),
[AS_CASE([$withval],
    [no],  [GIT=never-use HAVE_GIT=no],
    [yes], [],
    [GIT=$withval])])

AS_IF([test x“$HAVE_GIT” = xyes], [command -v “$GIT” > /dev/null || HAVE_GIT=no]) AC_SUBST(GIT) AC_SUBST(HAVE_GIT)

eval `sed -n -e [‘s/^@%:@define RUBY_*VERSION_([A-Z]*) ([0-9]*)$/1=2/p’] \

 -e ['s/^@%:@define \(RUBY_PATCHLEVEL\) \(.*\)/\1=\2/p'] \
$srcdir/include/ruby/version.h $srcdir/version.h`

for v in MAJOR MINOR TEENY; do

AS_IF([eval "test \"\$$v\" = ''"], [
    AC_MSG_ERROR(could not determine $v number from version.h)
])

done AC_SUBST(MAJOR) AC_SUBST(MINOR) AC_SUBST(TEENY) AC_SUBST(RUBY_API_VERSION, ‘$(MAJOR).$(MINOR)’) AC_SUBST(RUBY_PROGRAM_VERSION, ‘$(MAJOR).$(MINOR).$(TEENY)’)

AS_IF([test “$program_prefix” = NONE], [

program_prefix=

]) AS_IF([test “$prefix” -ef .], [

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

]) 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}’)

dnl checks for alternative programs AC_CANONICAL_BUILD AC_CANONICAL_HOST AC_CANONICAL_TARGET AC_ARG_PROGRAM 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 AS_IF([test ! -z “$ac_cv_prog_CC” -a ! -z “$CC” -a “$CC” != “$ac_cv_prog_CC”], [

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

(it is also a good idea to do ‘make clean’ before compiling)) ]) AS_CASE(, [linux*|cygwin*], [

AC_CHECK_TOOLS([CC], [gcc clang cc])

], [

# OpenBSD wants to prefer cc over gcc.
# See https://github.com/ruby/ruby/pull/2443
AC_CHECK_TOOLS([CC], [cl.exe clang cc gcc c99 /usr/ucb/cc])

])

AC_ARG_VAR(, [Archiver command]) AC_ARG_VAR(, [Assembler command]) AC_ARG_VAR(, [C compiler command]) AC_ARG_VAR(, [C++ compiler command]) AC_ARG_VAR(, [Linker command]) AC_ARG_VAR(, [Symbol list command]) AC_ARG_VAR(, [Objcopy command]) AC_ARG_VAR(, [Objdump command]) AC_ARG_VAR(, [Ranlib command]) AC_ARG_VAR(, [Strip command])

# We don’t want to bother things like `ccache gcc`, `clang -shared-libgcc`, … set rb_dummy ${CC} rb_CC=$2 AS_CASE([“/${rb_CC} ”], [*@<:@\ /@:>@“cc ”*], [

# Don't try g++/clang++ when CC=cc
AC_CHECK_TOOLS([CXX],    [cl.exe CC c++])

], [icc], [

# Intel C++ has interprocedural optimizations.  It tends to come with its
# own linker etc.
AC_CHECK_TOOL([AR],      [%x`echo "${rb_CC}" | sed s/icc/xiar/`])
AC_CHECK_TOOL([CXX],     [%x`echo "${rb_CC}" | sed s/icc/icpc/`])
AC_CHECK_TOOL([LD],      [%x`echo "${rb_CC}" | sed s/icc/xild/`])

], [gcc], [

# Dito for GCC.
AC_CHECK_TOOL([LD],      [%x`echo "${rb_CC}" | sed s/gcc/ld/`])
AC_CHECK_TOOL([AR],      [%x`echo "${rb_CC}" | sed s/gcc/gcc-ar/`])
AC_CHECK_TOOL([CXX],     [%x`echo "${rb_CC}" | sed s/gcc/g++/`])
AC_CHECK_TOOL([NM],      [%x`echo "${rb_CC}" | sed s/gcc/gcc-nm/`])
AC_CHECK_TOOL([RANLIB],  [%x`echo "${rb_CC}" | sed s/gcc/gcc-ranlib/`])

], [clang], [

# Dito for LLVM.  Note however that llvm-as is a LLVM-IR to LLVM bitcode
# assembler that does not target your machine native binary.
: ${LD:="${CC}"}         # ... try -fuse-ld=lld ?
AC_CHECK_TOOL([AR],      [`echo "${rb_CC}" | sed s/clang/llvm-ar/`])

# AC_CHECK_TOOL(, [`echo “${rb_CC}” | sed s/clang/llvm-as/`])

AC_CHECK_TOOL([CXX],     [%x`echo "${rb_CC}" | sed s/clang/clang++/`])
AC_CHECK_TOOL([NM],      [%x`echo "${rb_CC}" | sed s/clang/llvm-nm/`])
AC_CHECK_TOOL([OBJCOPY], [%x`echo "${rb_CC}" | sed s/clang/llvm-objcopy/`])
AC_CHECK_TOOL([OBJDUMP], [%x`echo "${rb_CC}" | sed s/clang/llvm-objdump/`])
AC_CHECK_TOOL([RANLIB],  [%x`echo "${rb_CC}" | sed s/clang/llvm-ranlib/`])
AC_CHECK_TOOL([STRIP],   [%x`echo "${rb_CC}" | sed s/clang/llvm-strip/`])

]) AS_UNSET(rb_CC) AS_UNSET(rb_dummy)

AS_CASE(, [solaris*], [

AC_PATH_TOOL([LD], [ld], [/usr/ccs/bin/ld], [/usr/ccs/bin:$PATH])

], [aix*], [

AC_PATH_TOOL([NM], [nm], [/usr/ccs/bin/nm], [/usr/ccs/bin:$PATH])

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

ac_cv_prog_ac_ct_OBJCOPY=":"

])

rb_test_CFLAGS=${CFLAGS+yes} rb_test_CXXFLAGS=${CXXFLAGS+yes}

# BSD’s ports and MacPorts prefix GNU binutils with ‘g’ AC_PROG_CC_C99 AC_PROG_CXX AC_PROG_CPP AC_PROG_RANLIB AC_CHECK_TOOLS(, [gar ar]) AC_CHECK_TOOLS(, [gas as]) AC_CHECK_TOOLS(, [gld ld]) # … try gold ? AC_CHECK_TOOLS(, [gnm nm]) AC_CHECK_TOOLS(, [gobjcopy objcopy]) AC_CHECK_TOOLS(, [gobjdump objdump]) AC_CHECK_TOOLS(, [gstrip strip], [:])

AS_IF([test ! $rb_test_CFLAGS], [AS_UNSET(CFLAGS)]); AS_UNSET(rb_test_CFLAGS) AS_IF([test ! $rb_test_CXXFLAGS], [AS_UNSET(CXXFLAGS)]); AS_UNSET(rb_save_CXXFLAGS)

AS_IF([test “${CXX}” = “g++” -a -z “${GXX}”], [

# AC_PROG_CXX sets $CXX to "g++" when it purposefully finds that there is
# _no_ g++.  This brain-damaged design must be worked around.  Thankfully,
# similar thing doesn't happen for AC_PROG_CC.
rb_there_is_in_fact_no_gplusplus_but_autoconf_is_cheating_us=true

])

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_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_ARG_ENABLE(load-relative,

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

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'

AS_IF([test -z “${CFLAGS+set}”], [

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

]) dnl AS_IF([test -z “${CXXFLAGS+set}”], [ dnl cxxflags=`echo “ $cxxflags ” | sed “$cflagspat;s/^ *//;s/ *$//”` dnl orig_cxxflags=“$cxxflags” dnl cxxflags=“$cxxflags ”‘${optflags} ${debugflags} ${warnflags}’ dnl ])

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

# 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)
AC_PREPROC_IFELSE(
    [AC_LANG_PROGRAM([
        @%:@if defined __APPLE_CC__ && defined __clang_major__ && __clang_major__ < 3
        @%:@error premature clang
        @%:@endif
    ])],
    [],
    [AC_MSG_ERROR([clang version 3.0 or later is required])])

])

AS_CASE(, [darwin*], [

AC_MSG_CHECKING(if minimum required OS X version is supported)
AC_TRY_CPP([@%:@include <AvailabilityMacros.h>
    @%:@if MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_5
    @%:@error pre OS X 10.5
    [!<===== pre OS X 10.5 =====>]
    @%:@endif
    ],
    [macosx_min_required=yes],
    [AC_MSG_RESULT(no)
    AC_MSG_ERROR([Unsupported OS X version is required])])
AC_MSG_RESULT(${macosx_min_required})

])

RUBY_MINGW32 AC_SUBST(GCC) AC_SUBST(LD) AS_IF([test “$GCC” = yes], [

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
icc_version=`echo =__ICC | $CC -E -xc - | sed '/^=/!d;s///;/^__ICC/d'`
test -n "$icc_version" || icc_version=0
# RUBY_APPEND_OPTIONS(XCFLAGS, ["-include ruby/config.h" "-include ruby/missing.h"])

], [

linker_flag=

])

AS_IF([test “$GCC” = yes -a “$gcc_major” -lt 3 ], [

AC_MSG_ERROR([too old GCC])

])

RUBY_PROG_GNU_LD RUBY_CPPOUTFILE

: ${OUTFLAG=‘-o ’} : ${COUTFLAG=${OUTFLAG}} : ${CSRCFLAG=”} AC_SUBST(OUTFLAG) AC_SUBST(COUTFLAG) AC_SUBST(CSRCFLAG)

: ${MJIT_CC=$CC} AS_IF([test “x$cross_compiling” = xno], [

AC_PATH_PROG([MJIT_CC], ${MJIT_CC})

# if $CC is in /usr/lib/ccache/$CC, search original $CC (disable ccache)
AS_IF([echo $RUBY_DEBUG | grep ci > /dev/null &&
       echo $MJIT_CC | grep ^/usr/lib/ccache > /dev/null], [
       PATH=`echo $PATH | sed "s/\/usr\/lib\/ccache://"` MJIT_CC=`which $CC`])

AS_CASE([$target_os],
    [*mingw*], [command -v cygpath > /dev/null && MJIT_CC=`cygpath -ma $MJIT_CC`])
shift 2
MJIT_CC="$MJIT_CC${1+ }$*"

])

AS_CASE(,

[darwin1*.*], [
  # Xcode linker warns for deprecated architecture and wrongly
  # installed TBD files.
  CC_WRAPPER=""
  echo 'int main(void) {return 0;}' > conftest.c
  AS_IF([$CC -framework Foundation -o conftest conftest.c 2>&1 |
         grep '^ld: warning: text-based stub file' >/dev/null], [
      CC_WRAPPER=`cd -P "${tooldir}" && pwd`/darwin-cc
      CC="$CC_WRAPPER $CC"
  ])
  rm -fr conftest*
])

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)

: ${DLDFLAGS=“$LDFLAGS”}

RUBY_UNIVERSAL_ARCH AS_IF([test “$target_cpu” != “$host_cpu” -a “$GCC” = yes -a “$cross_compiling” = no -a “${universal_binary:-no}” = no], [

RUBY_DEFAULT_ARCH("$target_cpu")

]) host_os=$target_os host_vendor=$target_vendor host_cpu=$target_cpu host=$target host_alias=$target_alias

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_SUBST(ASFLAGS)

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)
    sysconfdir=
])
: ${enable_shared=yes}
],

[hiuxmpp*], [AC_DEFINE(HIUX_MPP)]) # by TOYODA Eizi <toyoda@npd.kishou.go.jp>

AC_PROG_LN_S AC_PROG_MAKE_SET AC_PROG_INSTALL AC_PROG_MKDIR_P AS_IF([test “x$MKDIR_P” = “x -d”], [

AS_IF([test x"$as_mkdir_p" != xfalse], [
  MKDIR_P='mkdir -p'
  echo "use 'mkdir -p' as MKDIR_P"
], [
  AC_MSG_ERROR([mkdir -p is required])
])

]) MAKEDIRS=“$MKDIR_P” AC_SUBST(MAKEDIRS)

AC_CHECK_PROG(, [${ac_tool_prefix}dtrace], [${ac_tool_prefix}dtrace]) AS_IF([test "$cross_compiling:$ac_cv_prog_DTRACE" = no: -a -n "$ac_tool_prefix"], [

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

])

AC_CHECK_PROGS(DOT, dot) AC_CHECK_PROGS(DOXYGEN, doxygen)

for prog in ${ac_tool_prefix:+${ac_tool_prefix}pkg-config} pkg-config; do

AC_CHECK_PROG(PKG_CONFIG, $prog, [$prog], [], [],
    [`"$as_dir/$ac_word$ac_exec_ext" --print-errors --version > /dev/null 2>&1 || echo "$as_dir/$ac_word$ac_exec_ext"`])
test -z "${PKG_CONFIG}" || break

done

# checks for UNIX variants that set C preprocessor variables AC_USE_SYSTEM_EXTENSIONS

AC_MSG_CHECKING([whether it is Android]) AC_TRY_COMPILE([

@%:@ifdef __ANDROID__
@%:@error android
@%:@endif

], [], [AC_MSG_RESULT(no)], [

AC_MSG_RESULT(yes)
target_os=${target_os}-android
AC_MSG_CHECKING([for Android API version])
# hacky workaround: https://github.com/termux/termux-packages/issues/6176
rb_android_api=`getprop ro.build.version.sdk`
AC_MSG_RESULT($rb_android_api)
RUBY_APPEND_OPTIONS(CPPFLAGS, -D__ANDROID_API__=$rb_android_api -Wno-macro-redefined)

])

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) AS_IF([test -f conf$$.dir/src/cdcmd], [

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

], [

CHDIR=cd

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

: “compiler section” && { 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

])

: ${RPATHFLAG=”} rpathflag=” AS_IF([test x“${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=%x`echo "$RPATHFLAG" | sed 's/%.*//'`

])

RUBY_TRY_CFLAGS(-fdeclspec, [

RUBY_APPEND_OPTIONS(CC, -fdeclspec)
RUBY_APPEND_OPTIONS(MJIT_CC, -fdeclspec)

]) RUBY_TRY_CXXFLAGS(-fdeclspec, [RUBY_APPEND_OPTIONS(CXX, -fdeclspec)])

AS_CASE(, [-*],

[RUBY_DEVEL=yes], [RUBY_DEVEL=no])

particular_werror_flags=$RUBY_DEVEL 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” AS_CASE(, [yes::*|yes:*:set:], [# GCC && (!warnflags || extra_warnflags)

AS_IF([test $gcc_major -ge 4], [
    extra_warnflags="$extra_warnflags -Werror=extra-tokens"
])
AS_IF([test $gcc_major -ge 5 -a $gcc_major -le 6], [
    extra_warnflags="$extra_warnflags -Wno-maybe-uninitialized"
])
# ICC doesn't support -Werror=
AS_IF([test $icc_version -gt 0], [
    particular_werror_flags=no
])
for wflag in \
             -Werror=deprecated-declarations \
             -Werror=division-by-zero \
             -Werror=duplicated-cond \
             -Werror=implicit-function-declaration \
             -Werror=implicit-int \
             -Werror=misleading-indentation \
             -Werror=pointer-arith \
             -Werror=shorten-64-to-32 \
             -Werror=write-strings \
             -Wimplicit-fallthrough=0 \
             -Wmissing-noreturn \
             -Wno-cast-function-type \
             -Wno-constant-logical-operand \
             -Wno-long-long \
             -Wno-missing-field-initializers \
             -Wno-overlength-strings \
             -Wno-packed-bitfield-compat \
             -Wno-parentheses-equality \
             -Wno-self-assign \
             -Wno-tautological-compare \
             -Wno-unused-parameter \
             -Wno-unused-value \
             -Wsuggest-attribute=format \
             -Wsuggest-attribute=noreturn \
             -Wunused-variable \
             -diag-disable=175,188,1684,2259,2312 \
             $extra_warnflags \
             ; do
    AS_IF([test "$particular_werror_flags" != yes], [
        wflag=`echo x$wflag | sed 's/^x-Werror=/-W/;s/^x//'`
    ])
    ok=no
    RUBY_TRY_CFLAGS($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=

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

AC_LANG_PROGRAM([

@%:@if !(defined(__SUNPRO_C)||defined(__SUNPRO_CC)) @%:@error not sunpro @%:@endif],, [

for e in \
    E_STATEMENT_NOT_REACHED \
    E_INIT_SIGN_EXTEND \
    E_INIT_DOES_NOT_FIT \
    E_INITIALIZATION_TYPE_MISMATCH
do
    RUBY_TRY_CFLAGS([-erroff=${e}], [
        RUBY_APPEND_OPTIONS(rb_cv_warnflags, [-erroff=${e}])
    ])
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=])

AS_IF([test “$GCC” = yes], [

# -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.

# TODO: check if link succeeds with _FORTIFY_SOURCE=2.
AS_CASE(["$target_os"],
[mingw*], [
    fortify_source=no
])
AC_ARG_ENABLE(fortify_source,
              AS_HELP_STRING([--disable-fortify-source],
                             [disable -D_FORTIFY_SOURCE=2 option, which causes link error on mingw]),
              [fortify_source=$enableval])
AS_IF([test "x$fortify_source" != xno], [
    RUBY_TRY_CFLAGS([$optflags -D_FORTIFY_SOURCE=2], [RUBY_APPEND_OPTION(XCFLAGS, -D_FORTIFY_SOURCE=2)], [],
                    [@%:@include <stdio.h>])
])

: ${MJIT_HEADER_FLAGS='-P -dD'}

# -fstack-protector
AS_CASE(["$target_os"],
[mingw*|haiku*], [
    stack_protector=no
])
AS_IF([test -z "${stack_protector+set}"], [
    AS_FOR(option, opt, [-fstack-protector-strong -fstack-protector], [
        RUBY_TRY_CFLAGS(option, [stack_protector=yes])
        AS_IF([test "x$stack_protector" = xyes], [
            RUBY_TRY_LDFLAGS(option, [], [stack_protector=])
        ])
        AS_IF([test "x$stack_protector" = xyes], [stack_protector=option; break])
    ])
])
AS_CASE(["$stack_protector"], [-*], [
    RUBY_APPEND_OPTION(XCFLAGS, $stack_protector)
    RUBY_APPEND_OPTION(XLDFLAGS, $stack_protector)
    RUBY_APPEND_OPTION(LDFLAGS, $stack_protector)
])

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])
])
AS_IF([test "x$compress_debug_sections" != xno], [
    RUBY_APPEND_OPTION(DLDFLAGS, ${linker_flag}--compress-debug-sections=$compress_debug_sections)
])

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 declares 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="$CFLAGS"
      AS_IF([test "$particular_werror_flags" = "yes"], [
        CFLAGS="$CFLAGS -Werror=uninitialized"
      ], [
        CFLAGS="$CFLAGS -Werror -Wuninitialized"
      ])
      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="$save_CFLAGS"
    ])
  AS_IF([test "$rb_cv_mingw64_broken_frexp_modf" = yes], [
    AC_DEFINE(RUBY_MINGW64_BROKEN_FREXP_MODF)
  ])
],
[cygwin*|darwin*|netbsd*], [
  # need lgamma_r(), finite()
])

# ANSI (no XCFLAGS because this is C only)
AS_CASE(["$target_os"],
[solaris*], [
  # Because "-std=gnu99" affects existence of functions on Solaris,
  # "-std=gnu99" will be appended to CPPFLAGS.
    for ansi_options in -std=gnu99; do
        RUBY_TRY_CFLAGS(${ansi_options}, [
            RUBY_APPEND_OPTIONS(CPPFLAGS, ${ansi_options})
        ], [ansi_options=])
        test "x${ansi_options}" = x || break
    done
],
[
  # ANSI (no XCFLAGS because this is C only)
  rb_tmp_std_check=`echo $CC $CFLAGS $optflags $warnflags $debugflags | fgrep std= | tr -d  '\015'`
  AS_IF([test "x$rb_tmp_std_check" = "x"],
  [
    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])}

]) test $ac_cv_prog_cc_g = yes && : ${debugflags=-g} AS_IF([test “x$RUBY_DEVEL” = xyes], [RUBY_APPEND_OPTION(XCFLAGS, -DRUBY_DEVEL=1)])

AS_IF([test “$GCC” = “”], [

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

]) AS_IF([test “$GCC” = yes], [

AS_IF([test "$gcc_major" -ge 4], [
    RUBY_TRY_CFLAGS(-fvisibility=hidden, [visibility_option=yes], [visibility_option=no])
])
AC_SUBST(WERRORFLAG, "-Werror")
AS_IF([test "$visibility_option" = yes], [
    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")])
], [
    RUBY_TRY_LDFLAGS([-Wl,-unexported_symbol,_Init_*], [visibility_option=ld], [visibility_option=no])
])
test "$visibility_option" = no || OBJCOPY=:

])

AS_IF([test “$GCC” = yes], [

# optflags

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

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

])

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],
        [
        save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -march=i486"
        AC_TRY_LINK([unsigned long atomic_var;],
            [__sync_val_compare_and_swap(&atomic_var, 0, 1);],
            [rb_cv_gcc_compiler_cas=i486],
            [rb_cv_gcc_compiler_cas=no])
        CFLAGS="$save_CFLAGS"
        ])
])
AS_IF([test "$rb_cv_gcc_compiler_cas" = i486], [ARCH_FLAG="-march=i486"])

])

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"” }

AC_CACHE_CHECK([whether compiler has statement and declarations in expressions],

rb_cv_have_stmt_and_decl_in_expr,
[AC_TRY_COMPILE([],[ __extension__ ({ int a = 0; a; }); ],
[rb_cv_have_stmt_and_decl_in_expr=yes],
[rb_cv_have_stmt_and_decl_in_expr=no])])

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

AC_DEFINE(HAVE_STMT_AND_DECL_IN_EXPR)

])

: “header and library section” && { AC_ARG_WITH(winnt-ver,

AS_HELP_STRING([--with-winnt-ver=0xXXXX], [target Windows NT version (default to 0x0600)]),
[with_winnt_ver="$withval"], [with_winnt_ver="0x0600"])

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
])

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

AS_UNSET(ORIG_LIBS) POSTLINK=: AC_SUBST(POSTLINK) AS_CASE(, [nextstep*], [ ], [openstep*], [ ], [rhapsody*], [ ], [darwin*], [

ORIG_LIBS="$LIBS"
RUBY_PREPEND_OPTION(LIBS, -lobjc)
RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT)
AC_CACHE_CHECK([whether syscall(2) is deprecated], rb_cv_syscall_deprecated,
    [RUBY_WERROR_FLAG([
        AC_TRY_COMPILE([@%:@include <unistd.h>],
                       [if (syscall(0)) return 1;],
            [rb_cv_syscall_deprecated=no],
            [rb_cv_syscall_deprecated=yes])])])
AS_IF([test $rb_cv_syscall_deprecated = yes], [
    ac_cv_func___syscall=no
    ac_cv_func_syscall=no
    ac_cv_header_sys_syscall_h=no
    ac_cv_header_syscall_h=no
])
ac_cv_func_getcontext=no
ac_cv_func_setcontext=no
incs=`$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
AS_IF([test $gcc_major -lt 4 -o \( $gcc_major -eq 4 -a $gcc_minor -lt 3 \)], [
    ac_cv_func___builtin_setjmp=no
])
with_setjmp_type=sigsetjmp # to hijack SIGCHLD handler
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)])
AS_IF([test "$rb_cv_broken_crypt" = yes], [
   AC_DEFINE(BROKEN_CRYPT, 1)
])
POSTLINK=""
AC_CHECK_PROGS(codesign, codesign)
AC_CHECK_PROGS(dsymutil, dsymutil)
AS_IF([test -n "$codesign"], [
    POSTLINK="{ test -z '\$(RUBY_CODESIGN)' || $codesign -s '\$(RUBY_CODESIGN)' -f \$@; }${POSTLINK:+; $POSTLINK}"
])
AS_IF([test -n "$dsymutil"], [
    POSTLINK="$dsymutil \$@${POSTLINK:+; $POSTLINK}"
])
AS_IF([test -n "${POSTLINK}"], [
    LINK_SO="$LINK_SO

$(POSTLINK)“

])
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)
AS_IF([test $given_xopen_source = no], [
  AC_MSG_CHECKING(appropriate _XOPEN_SOURCE value to define)
  define_xopen_source=""
  for tmp_xpg in 7 6 5; do
    AS_IF([test x"$define_xopen_source" != x], [
      break
    ])
    RUBY_WERROR_FLAG([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=${tmp_xpg}00], [])
        ])
  done
  AS_IF([test x"$define_xopen_source" = x], [
    define_xopen_source=no
  ])
  AC_MSG_RESULT($define_xopen_source)
  AS_IF([test x"$define_xopen_source" != xno], [
    RUBY_APPEND_OPTIONS(CPPFLAGS, -D_XOPEN_SOURCE=$define_xopen_source)
    # _XOPEN_SOURCE should not be defined for C++ on Solaris.
    RUBY_APPEND_OPTIONS(CXXFLAGS, -U_XOPEN_SOURCE)
  ])
])
],

[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_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
ac_cv_type_off_t=yes
ac_cv_sizeof_off_t=8
AS_IF([test "$target_cpu" = x64], [
    ac_cv_func___builtin_setjmp=yes
    ac_cv_func_round=no
    rb_cv_coroutine=yes
])
ac_cv_func_tgamma=no
rb_cv_negative_time_t=yes
AC_CHECK_TYPE([NET_LUID], [], [],
              [@%:@include <winsock2.h>
              @%:@include <iphlpapi.h>])
AS_IF([test x"$ac_cv_type_NET_LUID" = xyes], [
    AC_DEFINE(HAVE_TYPE_NET_LUID, 1)
])
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”

],

[aix*],[ LIBS=“-lm $LIBS”

ac_cv_func_round=no
ac_cv_func___builtin_setjmp=no
],

[linux*],[ LIBS=“-lm $LIBS”

# __builtin_longjmp in ppc64* Linux does not restore
# the TOC register (r2), which is problematic
# when a global exit happens from JITted .so code.
AS_CASE(["$target_cpu"], [powerpc64*], [
        ac_cv_func___builtin_setjmp=no
])
# With gcc-8's -fcf-protection, MJIT's __builtin_longjmp fails.
AS_CASE(["$CC $CFLAGS "], [*" -fcf-protection "*], [cf_protection=yes], [cf_protection=no])
AS_IF([test "$cf_protection" = yes], [
        ac_cv_func___builtin_setjmp=no
])
],

[ LIBS=“-lm $LIBS”]) : ${ORIG_LIBS=$LIBS}

AS_IF([test -n “${rb_there_is_in_fact_no_gplusplus_but_autoconf_is_cheating_us}”], [

AC_MSG_NOTICE([Test skipped due to lack of a C++ compiler.])

], [test -n “${CXX}”], [

RUBY_WERROR_FLAG([
    AC_MSG_CHECKING([whether CXXFLAGS is valid])
    AC_LANG_PUSH(C++)
    AC_TRY_COMPILE([@%:@include <cstdio>], [], [AC_MSG_RESULT(yes)], [
        AC_MSG_RESULT(no)
        # The message mentions CXXFLAGS, but CPPFLAGS might also affects.
        AC_MSG_WARN([something wrong with CXXFLAGS="$CXXFLAGS"])
        CXX=false
    ])
    AC_LANG_POP(C++)
])

])

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(copyfile.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(sanitizer/asan_interface.h) AC_CHECK_HEADERS(sanitizer/msan_interface.h) AC_CHECK_HEADERS(setjmpex.h) AC_CHECK_HEADERS(stdalign.h) AC_CHECK_HEADERS(sys/attr.h) AC_CHECK_HEADERS(sys/eventfd.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) AS_CASE(“$target_cpu”, [x64|x86_64|i86*], [

AC_CHECK_HEADERS(x86intrin.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” != xno],[

AC_SEARCH_LIBS([malloc_conf], [jemalloc],
  [
    AC_DEFINE(HAVE_LIBJEMALLOC, 1)
    with_jemalloc=yes
  ],
  [test x$with_jemalloc = xyes && with_jemalloc=no])
AC_CHECK_HEADER(jemalloc/jemalloc.h, [
  AC_DEFINE(RUBY_ALTERNATIVE_MALLOC_HEADER, [<jemalloc/jemalloc.h>])
],
[test x$with_jemalloc = xyes && with_jemalloc=no])
AS_IF([test "x$with_jemalloc" != xyes], [
  AC_CACHE_CHECK([for jemalloc with JEMALLOC_MANGLE], rb_cv_jemalloc_demangle,
    [AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@define JEMALLOC_MANGLE 1
    @%:@ifdef RUBY_ALTERNATIVE_MALLOC_HEADER
    @%:@include RUBY_ALTERNATIVE_MALLOC_HEADER
    @%:@else
    @%:@include <jemalloc.h>
    @%:@endif], [return !&malloc_conf])],
    [rb_cv_jemalloc_demangle=yes],
    [rb_cv_jemalloc_demangle=no])
  ])
])
AS_IF([test "x$rb_cv_jemalloc_demangle" = xyes], [
  AC_DEFINE(JEMALLOC_MANGLE)
  with_jemalloc=yes
])
AS_CASE(["$with_jemalloc"],
  [yes],
  [
    AC_DEFINE(HAVE_MALLOC_CONF)
    ac_cv_func_malloc_usable_size=yes
  ],
  [no],
  [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. AS_IF([test x“$enable_largefile” != xno], [

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])])
])

]) mv confdefs.h largefile.h mv confdefs1.h confdefs.h cat largefile.h >> confdefs.h

AS_CASE(,

[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 AC_C_RESTRICT

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])

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])

AS_IF([test “$rb_cv_packed_struct” != no], [

AC_DEFINE_UNQUOTED([PACKED_STRUCT(x)], [$rb_cv_packed_struct])
RUBY_TRY_CFLAGS(-Wno-address-of-packed-member, [AC_DEFINE(USE_UNALIGNED_MEMBER_ACCESS)])

], [

AC_DEFINE_UNQUOTED([PACKED_STRUCT(x)], x)

])

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

RUBY_CHECK_PRINTF_PREFIX(long long, ll I64, LL)

], [test “x$ac_cv_type___int64” = xyes], [

RUBY_CHECK_PRINTF_PREFIX(__int64, ll I64, LL)

])

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 short” “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, [@%:@ifdef HAVE_TIME_H @%:@ include <time.h> @%:@endif @%:@ifdef HAVE_SYS_TIME_H @%:@ include <sys/time.h> @%:@endif])

# VA_ARGS is also tested in AC_PROG_CC_C99 since autoconf 2.60a (around # 2006). The check below is redundant and should always success. Remain not # deleted for backward compat. AC_CACHE_CHECK(for variable length macro, rb_cv_va_args_macro,

[AC_TRY_COMPILE([

int foo(const char*); @%:@define FOO(…) foo(@%:@VA_ARGS) ], [FOO(1);FOO(1,2);FOO(1,2,3);],

rb_cv_va_args_macro=yes,
rb_cv_va_args_macro=no)])

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

AC_DEFINE(HAVE_VA_ARGS_MACRO)

])

# We want C11’s `_Alignof`. GCC (and alike) have `__alignof__`, which behave # slightly differently than the C11’s. We cannot use `__alignof__` for our # purpose. The problem is, however, that old gcc and old clang had both # implemented `_Alignof` as a synonym of `__alignof__`. They are not what we # want. We have to check sanity. # # See also: gcc.gnu.org/bugzilla/show_bug.cgi?id=52023 # See also: bugs.llvm.org/show_bug.cgi?id=26547 AC_CACHE_CHECK([if _Alignof() works], rb_cv_have__alignof,[

rb_cv_have__alignof=no
RUBY_WERROR_FLAG([
    AC_TRY_COMPILE([
        @%:@ifdef HAVE_STDALIGN_H
        @%:@include <stdalign.h>
        @%:@endif
        @%:@ifdef STDC_HEADERS
        @%:@include <stddef.h>
        @%:@endif
        @%:@ifndef __GNUC__
        @%:@define __extension__
        @%:@endif
    ], [
        typedef struct conftest_tag {
            char _;
            double d;
        } T;
        static int conftest_ary@<:@
            offsetof(T, d) == __extension__ _Alignof(double)
            ? 1 : -1
        @:>@;
        return conftest_ary@<:@0@:>@;
    ], [
        rb_cv_have__alignof=yes
    ])
])

]) AS_IF([test “$rb_cv_have__alignof” != no], [

AC_DEFINE(HAVE__ALIGNOF)

])

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_FUNC_ATTRIBUTE(__noinline__, NOINLINE) RUBY_FUNC_ATTRIBUTE(always_inline, ALWAYS_INLINE) RUBY_FUNC_ATTRIBUTE(no_sanitize(san), NO_SANITIZE(san, x), rb_cv_func_no_sanitize) RUBY_FUNC_ATTRIBUTE(no_sanitize_address, NO_SANITIZE_ADDRESS) RUBY_FUNC_ATTRIBUTE(no_address_safety_analysis, NO_ADDRESS_SAFETY_ANALYSIS) 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) AS_IF([test “$rb_cv_func_weak” != x], [

AC_DEFINE(HAVE_FUNC_WEAK)

])

AC_CACHE_CHECK([for __attribute__((__depreacted__(msg))) in C++],

rb_cv_CentOS6_CXX_workaround,
RUBY_WERROR_FLAG([
  AC_LANG_PUSH([C++])
  AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM(
      [],
      [__attribute__((__deprecated__("message"))) int conftest(...);])],
    [rb_cv_CentOS6_CXX_workaround=yes],
    [rb_cv_CentOS6_CXX_workaround=no])
  AC_LANG_POP()]))

AS_IF([test “$rb_cv_CentOS6_CXX_workaround” != no],[

AC_DEFINE([RUBY_CXX_DEPRECATED(msg)],
  [__attribute__((__deprecated__(msg)))])])

AC_CACHE_CHECK([for std::nullptr_t], rb_cv_CXX_nullptr, [

AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE(
  [AC_LANG_PROGRAM(
    [@%:@include <cstddef>],
    [static std::nullptr_t const *const conftest = nullptr;])],
  [rb_cv_CXX_nullptr=yes],
  [rb_cv_CXX_nullptr=no])
AC_LANG_POP()])

AS_IF([test “$rb_cv_CXX_nullptr” != no],)

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)

AS_IF([test “$GCC” = yes], [

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])
AS_IF([test "$rb_cv_gcc_function_alias" != no], [
    AC_DEFINE(HAVE_ATTRIBUTE_FUNCTION_ALIAS)
    AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_TYPE(type, prot, name, args)],
                       [type prot __attribute__(($rb_cv_gcc_function_alias(@%:@name)));])
    AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION_VOID(prot, name, args)],
                       [RUBY_ALIAS_FUNCTION_TYPE(void, prot, name, args)])
])

AC_CACHE_CHECK([for __atomic builtins], [rb_cv_gcc_atomic_builtins], [
    AC_TRY_LINK([unsigned int 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])])
AS_IF([test "$rb_cv_gcc_atomic_builtins" = yes], [
    AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS)
])

AC_CACHE_CHECK([for __sync builtins], [rb_cv_gcc_sync_builtins], [
    AC_TRY_LINK([unsigned int 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])])
AS_IF([test "$rb_cv_gcc_sync_builtins" = yes], [
    AC_DEFINE(HAVE_GCC_SYNC_BUILTINS)
])

])

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])
])
])
AS_IF([test "$rb_cv_func___builtin_unreachable" = yes], [
    AC_DEFINE_UNQUOTED(UNREACHABLE, [__builtin_unreachable()])
])

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 ])]) AS_IF([test “$rb_cv_func_exported” != no], [

AC_DEFINE_UNQUOTED(RUBY_FUNC_EXPORTED, [$rb_cv_func_exported extern])

]) RUBY_DECL_ATTRIBUTE(, [RUBY_FUNC_NONNULL(n,x)], [rb_cv_func_nonnull],

[], [function], [

@%:@define x int conftest_attribute_check(void *p) @%:@define n 1 ])

RUBY_APPEND_OPTION(XCFLAGS, -DRUBY_EXPORT)

AC_ARG_ENABLE(mathn,

AS_HELP_STRING([--enable-mathn], [enable canonicalization for mathn]),
[AC_MSG_ERROR([mathn support has been dropped])])

AC_CACHE_CHECK(for function name string predefined identifier,

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

) AS_IF([test “$rb_cv_function_name_string” != no], [

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
AS_IF([test "x$ac_cv_type_long_long" = xyes], [
    type="unsigned long long" max="ULLONG_MAX"
], [
    type="unsigned long" max="ULONG_MAX"
])
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]
    )
])

]) AS_IF([test $rb_cv_enum_over_int = yes], [

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=${ac_cv_header_net_socket_h=no} AS_IF([test “$ac_cv_header_net_socket_h” = yes], [

ac_cv_header_sys_socket_h=${ac_cv_header_sys_socket_h=no}

], [

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_CHECK_MEMBERS([struct stat.st_blksize]) AC_CHECK_MEMBERS([struct stat.st_blocks]) AC_CHECK_MEMBERS([struct stat.st_rdev]) RUBY_CHECK_SIZEOF([struct stat.st_size], [off_t int long “long long”], [], [@%:@include <sys/stat.h>]) AS_IF([test “$ac_cv_member_struct_stat_st_blocks” = yes], [

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

]) 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]) AS_IF([test “x$ac_cv_member_struct_stat_st_birthtimespec” != xyes],

[AC_CHECK_MEMBERS([struct statx.stx_btime])])

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

AS_IF([test “${ac_cv_type_struct_timeval}” = yes], [

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(${ac_cv_sizeof_struct_timeval_tv_sec},
        [SIZEOF_INT], [t=int],
        [SIZEOF_LONG], [t=long],
        [SIZEOF_LONG_LONG], [t=LONG_LONG],
        [t=])
AS_IF([test "${t}" != ""], [
    AC_DEFINE_UNQUOTED(TYPEOF_TIMEVAL_TV_SEC, [$t])
])

])

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_CACHE_VAL(,

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

@%:@ifdef HAVE_SYS_SELECT_H @%:@ include <sys/select.h> @%:@endif])]) AS_IF([test “$rb_cv_large_fd_select” = yes], [

AC_DEFINE(HAVE_RB_FD_INIT, 1)

])

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) AS_IF([test “x$rb_cv_type_intptr_t” != xno], [

RUBY_CHECK_PRINTF_PREFIX(intptr_t, '' ll I64 l, PTR)

]) RUBY_DEFINT(ssize_t, size_t, [], [@%:@include <sys/types.h>]) dnl may differ from int, so not use AC_TYPE_SSIZE_T. AS_IF([test “x$rb_cv_type_int64_t” != xno], [

RUBY_CHECK_PRINTF_PREFIX(int64_t, ll I64 l, 64)

])

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"])

]) AS_IF([test $rb_cv_stack_end_address != no], [

AC_DEFINE_UNQUOTED(STACK_END_ADDRESS, $rb_cv_stack_end_address)

])

dnl Checks for library functions. AC_TYPE_GETGROUPS 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
])

AS_IF([test “x$ALLOCA” = “x”], [

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])
AS_IF([test "x$rb_cv_dynamic_alloca" = "x__chkstk"], [
    AC_DEFINE_UNQUOTED(RUBY_ALLOCA_CHKSTK, _$rb_cv_dynamic_alloca)
    AS_CASE("$target_cpu",
    [x64|x86_64], [
        AC_SUBST([ALLOCA], [\${LIBOBJDIR}x86_64-chkstk.${ac_objext}])
    ],)
])

]) AC_FUNC_MEMCMP

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(flock) AC_REPLACE_FUNCS(hypot) AC_REPLACE_FUNCS(lgamma_r) AC_REPLACE_FUNCS(memmove) AC_REPLACE_FUNCS(nan) 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)

RUBY_REPLACE_FUNC(, [@%:@include <math.h>]) RUBY_REPLACE_FUNC(, [@%:@include <math.h>]) RUBY_REPLACE_FUNC(, [@%:@include <math.h>])

# 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)])

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

AC_DEFINE(HAVE_SIGNBIT)

], [

AC_LIBOBJ([signbit])

])

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(copy_file_range) 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(eventfd) AC_CHECK_FUNCS(explicit_memset) AC_CHECK_FUNCS(fcopyfile) AC_CHECK_FUNCS(fchmod) AC_CHECK_FUNCS(fchown) AC_CHECK_FUNCS(fcntl) AC_CHECK_FUNCS(fdatasync) AC_CHECK_FUNCS(fdopendir) AC_CHECK_FUNCS(fgetattrlist) AC_CHECK_FUNCS(fmod) AC_CHECK_FUNCS(fstatat) 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(getlogin) AC_CHECK_FUNCS(getlogin_r) AC_CHECK_FUNCS(getpgid) AC_CHECK_FUNCS(getpgrp) AC_CHECK_FUNCS(getpriority) AC_CHECK_FUNCS(getpwnam) AC_CHECK_FUNCS(getpwnam_r) AC_CHECK_FUNCS(getpwuid) AC_CHECK_FUNCS(getpwuid_r) AC_CHECK_FUNCS(getrandom) 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(grantpt) 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(lutimes) 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(openat) 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(pwrite) AC_CHECK_FUNCS(qsort_r) AC_CHECK_FUNCS(qsort_s) AC_CHECK_FUNCS(readlink) AC_CHECK_FUNCS(realpath) 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) AC_CHECK_FUNCS(__cospi) AC_CHECK_FUNCS(__sinpi)

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

[AC_CHECK_FUNCS(statx)])

AS_CASE(, [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>])])])

RUBY_CHECK_BUILTIN_FUNC(__builtin_alloca_with_align, [__builtin_alloca_with_align(1, 4096)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_assume_aligned, [__builtin_assume_aligned((void*)32, 32)]) 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_add_overflow, [int x;__builtin_add_overflow(0,0,&x)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_sub_overflow, [int x;__builtin_sub_overflow(0,0,&x)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_mul_overflow, [int x;__builtin_mul_overflow(0,0,&x)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_mul_overflow_p, [__builtin_mul_overflow_p(0,0,(int)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))]];
])

AS_IF([test x$rb_cv_builtin___builtin_choose_expr = xyes], [

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))]];
])

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

AS_IF([test “$ac_cv_func_qsort_r” != no], [

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)])

# Some platform need -lrt for clock_gettime, but the other don’t. AS_IF([test x“$ac_cv_func_clock_gettime” != xyes], [

# 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)
AS_IF([test x"$ac_cv_lib_rt_clock_gettime" = xyes], [
    AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
])

]) AC_CHECK_FUNCS(clock_getres) # clock_getres should be tested after clock_gettime test including librt test. AC_CHECK_LIB(, [timer_create]) AC_CHECK_LIB(, [timer_settime]) AS_IF([test x“$ac_cv_lib_rt_timer_create” = xyes], [

AC_DEFINE(HAVE_TIMER_CREATE, 1)

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

AC_DEFINE(HAVE_TIMER_SETTIME, 1)

])

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)])

AS_IF([test “$rb_cv_unsetenv_return_value” = no], [

AC_DEFINE(VOID_UNSETENV)

])

# 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])

AS_IF([test “$use_setreuid” = yes], [

AC_DEFINE(USE_SETREUID)
AC_DEFINE(USE_SETREGID)

]) 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])])

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

AC_DEFINE(HAVE_STRUCT_TM_TM_GMTOFF)

]) 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)])

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

AC_DEFINE(HAVE_DAYLIGHT)

])

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)])

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

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)])

AS_IF([test “$rb_cv_localtime_overflow” = no], [

AC_DEFINE(LOCALTIME_OVERFLOW_PROBLEM)

])

AS_IF([test “$ac_cv_func_sigprocmask” = yes && test “$ac_cv_func_sigaction” = yes], [

AC_DEFINE(POSIX_SIGNAL)

], [

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=$ac_cv_func_sigsetmask)])
AS_IF([test "$rb_cv_bsd_signal" = yes], [
  AC_DEFINE(BSD_SIGNAL)
])

])

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

AS_IF([test “$ac_cv_func_getpgid” = no], [

# 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 ]) AS_IF([test “$ac_cv_func_setpgid:$ac_cv_func_setpgrp” = no:yes], [

# 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 ])

AS_IF([test x“$ac_cv_func_dirfd” = xno], [

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

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

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)])

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

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

], [

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

])

AS_IF([test “$ac_cv_func_copy_file_range” = no], [

AC_CACHE_CHECK([for copy_file_range],
  rb_cv_use_copy_file_range,
  [AC_TRY_RUN([

include <sys/types.h> include <sys/stat.h> include <sys/syscall.h> include <fcntl.h> include <unistd.h>

ifndef O_TMPFILE

#define O_TMPFILE __O_TMPFILE

endif

int main() { ifdef __NR_copy_file_range

int ret, fd_in, fd_out;
fd_in = open("/tmp", O_TMPFILE|O_RDWR, S_IRUSR);
fd_out = open("/tmp", O_TMPFILE|O_WRONLY, S_IWUSR);
ret = syscall(__NR_copy_file_range, fd_in, NULL, fd_out, NULL, 0, 0);
close(fd_in);
close(fd_out);
if (ret == -1) { return 1; }
return 0;

else

return 1;

endif }

],
  [rb_cv_use_copy_file_range=yes],
  [rb_cv_use_copy_file_range=no],
  [rb_cv_use_copy_file_range=no])])

]) AS_CASE(, [yes], [

AC_DEFINE(USE_COPY_FILE_RANGE)

])

AS_CASE(, [yes], [], [

AC_MSG_ERROR(clock_gettime() or gettimeofday() must exist)

])

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

RUBY_CHECK_SYSCONF(CLK_TCK)

])

AS_IF([test “${universal_binary-no}” = yes ], [

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)
    AS_IF([test x$stack_dir = x], [
        stack_dir=$dir
    ], [test x$stack_dir != x$dir], [
        stack_dir=no
    ])
done
CFLAGS="$save_CFLAGS" LDFLAGS="$save_LDFLAGS"
AS_IF([test x$stack_dir = xno], [
    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
], [
    AC_DEFINE_UNQUOTED(STACK_GROW_DIRECTION, $stack_dir)
])

], [

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

])

AC_ARG_WITH(coroutine,

AS_HELP_STRING([--with-coroutine=IMPLEMENTATION], [specify the coroutine implementation to use]),
[rb_cv_coroutine=$withval])

AS_CASE(, [yes|"], [

AC_MSG_CHECKING(native coroutine implementation for ${target_cpu}-${target_os})
rb_cv_coroutine=
AS_CASE(["$target_cpu-$target_os"],
    [x*64-darwin*], [
        rb_cv_coroutine=amd64
    ],
    [arm64-darwin*], [
        rb_cv_coroutine=arm64
    ],
    [x*64-linux*], [
        AS_CASE(["$ac_cv_sizeof_voidp"],
            [8], [ rb_cv_coroutine=amd64 ],
            [4], [ rb_cv_coroutine=x86 ],
            dnl unknown pointer size, bail out as no Context.h soon.
        )
    ],
    [*86-linux*], [
        rb_cv_coroutine=x86
    ],
    [x64-mingw32], [
        rb_cv_coroutine=win64
    ],
    [*86-mingw32], [
        rb_cv_coroutine=win32
    ],
    [arm*-linux*], [
        rb_cv_coroutine=arm32
    ],
    [aarch64-linux*], [
        rb_cv_coroutine=arm64
    ],
    [powerpc64le-linux*], [
        rb_cv_coroutine=ppc64le
    ],
    [x86_64-openbsd*], [
        rb_cv_coroutine=amd64
    ],
    [i386-openbsd*], [
        rb_cv_coroutine=x86
    ],
    [*-openbsd*], [
        rb_cv_coroutine=copy
    ],
    [*-haiku*], [
        rb_cv_coroutine=copy
    ],
    [
        rb_cv_coroutine=ucontext
    ]
)
AC_MSG_RESULT(${rb_cv_coroutine})

]) COROUTINE_H=coroutine/$rb_cv_coroutine/Context.h AS_IF([test ! -f “$srcdir/$COROUTINE_H”],

[AC_MSG_ERROR('$rb_cv_coroutine' is not supported as coroutine)])

AS_CASE(,

[copy|ucontext], [
    COROUTINE_SRC=coroutine/$rb_cv_coroutine/Context.c
],
[
    COROUTINE_SRC=coroutine/$rb_cv_coroutine/Context.'$(ASMEXT)'
]

) AC_DEFINE_UNQUOTED(COROUTINE_H, [“$COROUTINE_H”]) AC_SUBST(X_COROUTINE_H, [$COROUTINE_H]) AC_SUBST(X_COROUTINE_SRC, [$COROUTINE_SRC])

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

for pthread_lib in thr pthread pthreads c c_r root; do
    AC_CHECK_LIB($pthread_lib, pthread_create,
                 rb_with_pthread=yes, rb_with_pthread=no)
    AS_IF([test "$rb_with_pthread" = "yes"], [break])
done
AS_IF([test x"$rb_with_pthread" = xyes], [
    AC_DEFINE(_REENTRANT)
    AC_DEFINE(_THREAD_SAFE)
    AC_DEFINE(HAVE_LIBPTHREAD)
    AC_CHECK_HEADERS(pthread_np.h, [], [], [@%:@include <pthread.h>])
    AS_CASE(["$pthread_lib:$target_os"],
            [c:*], [],
            [root:*], [],
            [c_r:*|*:openbsd*|*:mirbsd*],  [LIBS="-pthread $LIBS"],
            [LIBS="-l$pthread_lib $LIBS"])
], [
    AC_MSG_WARN("Don't know how to find pthread library on your system -- thread support disabled")
])
AC_CACHE_CHECK([whether pthread_t is scalar type], [rb_cv_scalar_pthread_t], [
    AC_TRY_COMPILE([
        @%:@include <pthread.h>
        ], [
        pthread_t thread_id;
        thread_id = 0;
        if (!thread_id) return 0;
        ], [rb_cv_scalar_pthread_t=yes], [rb_cv_scalar_pthread_t=no])
])
AS_IF([test x"$rb_cv_scalar_pthread_t" = xyes], [
    : # RUBY_CHECK_SIZEOF(pthread_t, [void* int long], [], [@%:@include <pthread.h>])
], [
    AC_DEFINE(NON_SCALAR_THREAD_ID)
])
AC_CHECK_FUNCS(sched_yield pthread_attr_setinheritsched \
    pthread_attr_get_np pthread_attr_getstack pthread_attr_getguardsize \
    pthread_get_stackaddr_np pthread_get_stacksize_np \
    thr_stksegment pthread_stackseg_np pthread_getthrds_np \
    pthread_condattr_setclock \
    pthread_sigmask pthread_setname_np pthread_set_name_np)
AS_CASE(["$target_os"],[aix*],[ac_cv_func_pthread_getattr_np=no],[AC_CHECK_FUNCS(pthread_getattr_np)])
set_current_thread_name=
AS_IF([test "$ac_cv_func_pthread_setname_np" = yes], [
    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(), \"%s\", name)
        # Darwin (name)
        for mac in \
            "(pthread_self(), name)" \
            "(pthread_self(), \"%s\", name)" \
            "(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
        ]
    )
    AS_IF([test -n "${rb_cv_func_pthread_setname_np_arguments}"], [
        set_current_thread_name="pthread_setname_np${rb_cv_func_pthread_setname_np_arguments}"
    ])
], [test "$ac_cv_func_pthread_set_name_np" = yes], [
    set_current_thread_name="pthread_set_name_np(pthread_self(), name)"
])
AS_IF([test -n "$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)
        ])
])

])

AS_IF([test x“$ac_cv_header_ucontext_h” = xno], [

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])])
AS_IF([test x"$rb_cv_ucontext_in_signal_h" = xyes], [
        AC_DEFINE_UNQUOTED(UCONTEXT_IN_SIGNAL_H, 1)
])

]) AS_IF([test x“$ac_cv_header_ucontext_h” = xyes -o x“$rb_cv_ucontext_in_signal_h” = xyes], [

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])])
AS_IF([test x"$rb_cv_mcontext_t_ptr" = xyes], [
    AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t mc = (uc)->uc_mcontext)
], [
    AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t *mc = &(uc)->uc_mcontext)
])
AS_IF([test x"$rb_with_pthread" = xyes], [
    AC_CHECK_FUNCS(getcontext setcontext)
])

])

AS_IF([test “$ac_cv_func_fork_works” = “yes” -a “$rb_with_pthread” = “yes”], [

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([$withval],
[yes], [
    AS_IF([test "$enable_shared" = yes], [
        AC_MSG_ERROR(dln_a_out can not make shared library)
    ])
    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)])

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

AC_DEFINE(USE_ELF)
AS_IF([test "$with_dln_a_out" = yes], [
  AC_MSG_ERROR(dln_a_out does not work with ELF)
])
AC_CHECK_HEADERS([elf.h elf_abi.h])
AS_IF([test $ac_cv_header_elf_h = yes -o $ac_cv_header_elf_abi_h = yes], [
  AC_LIBOBJ([addr2line])
  AC_CHECK_LIB([z], [uncompress])
])

])

AC_CHECK_HEADERS() AS_IF([test "$ac_cv_header_mach_o_loader_h" = yes], [

AC_LIBOBJ([addr2line])

])

AS_CASE(, [linux* | gnu* | k*bsd*-gnu | bsdi* | kopensolaris*-gnu], [

AS_IF([test "$rb_cv_binary_elf" = no], [
    with_dln_a_out=yes
], [
    LDFLAGS="$LDFLAGS -rdynamic"
])])

LIBEXT=a

AC_ARG_WITH(mjit-tabs,

AS_HELP_STRING([--without-mjit-tabs], [expand tabs in mjit header]),
[AS_IF([test $withval = no], [MJIT_TABS=false])])

AC_SUBST(MJIT_TABS)dnl AC_SUBST(DLDFLAGS)dnl AC_SUBST(ARCH_FLAG)dnl AC_SUBST(MJIT_HEADER_FLAGS)dnl AC_SUBST(MJIT_HEADER_INSTALL_DIR)dnl AC_SUBST(MJIT_CC)dnl AS_IF([test “$GCC” = “yes”], [

AS_CASE(["$target_os"],[aix*],[mjit_std_cflag="-std=gnu99"])

]) AC_SUBST(MJIT_CFLAGS, [${MJIT_CFLAGS-“-w ${mjit_std_cflag} ${orig_cflags}”}])dnl AC_SUBST(MJIT_OPTFLAGS, [${MJIT_OPTFLAGS-‘$(optflags)’}])dnl AC_SUBST(MJIT_DEBUGFLAGS, [${MJIT_DEBUGFLAGS-‘$(debugflags)’}])dnl AC_SUBST(MJIT_LDSHARED)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=

AS_IF([test “$with_dln_a_out” != yes], [

rb_cv_dlopen=unknown
AC_MSG_CHECKING(whether OS depend dynamic link works)
AS_IF([test "$GCC" = yes], [
  AS_CASE(["$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)])
], [
  AS_CASE(["$target_os"],
      [hpux*],          [CCDLFLAGS="$CCDLFLAGS +Z"],
      [solaris*|irix*], [CCDLFLAGS="$CCDLFLAGS -KPIC"],
      [sunos*],         [CCDLFLAGS="$CCDLFLAGS -PIC"],
      [esix*|uxpds*],   [CCDLFLAGS="$CCDLFLAGS -KPIC"],
                        [: ${CCDLFLAGS=""}])
])

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"
                      : ${LIBPATHENV=SHLIB_PATH}
                      rb_cv_dlopen=yes],
      [solaris*], [   AS_IF([test "$GCC" = yes], [
                          : ${LDSHARED='$(CC) -shared'}
                          AS_IF([test "$rb_cv_prog_gnu_ld" = yes], [
                              LDFLAGS="$LDFLAGS -Wl,-E"
                          ])
                      ], [
                          : ${LDSHARED='$(CC) -G'}
                      ])
                      AS_IF([test "$ac_cv_sizeof_voidp" = 8], [
                          : ${LIBPATHENV=LD_LIBRARY_PATH_64}
                          : ${PRELOADENV=LD_PRELOAD_64}
                      ], [
                          : ${LIBPATHENV=LD_LIBRARY_PATH_32}
                          : ${PRELOADENV=LD_PRELOAD_32}
                      ])
                      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'}
                      AS_IF([test "$rb_cv_binary_elf" = yes], [
                          LDFLAGS="$LDFLAGS -Wl,-export-dynamic"
                      ])
                      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'}
                      AS_IF([test "$rb_cv_binary_elf" = yes], [
                          LDFLAGS="$LDFLAGS -rdynamic"
                          DLDFLAGS="$DLDFLAGS "'-Wl,-soname,$@'
                      ], [
                        test "$GCC" = yes && test "$rb_cv_prog_gnu_ld" = yes || LDSHARED='$(LD) -Bshareable'
                      ])
                      rb_cv_dlopen=yes],
      [openbsd*|mirbsd*], [   : ${LDSHARED='$(CC) -shared ${CCDLFLAGS}'}
                      AS_IF([test "$rb_cv_binary_elf" = yes], [
                          LDFLAGS="$LDFLAGS -Wl,-E"
                      ])
                      rb_cv_dlopen=yes],
      [darwin*], [    : ${LDSHARED='$(CC) -dynamic -bundle'}
                      : ${DLDSHARED='$(CC) -dynamiclib'}
                      : ${LDFLAGS=""}
                      : ${LIBPATHENV=DYLD_FALLBACK_LIBRARY_PATH}
                      : ${PRELOADENV=DYLD_INSERT_LIBRARIES}
                      rb_cv_dlopen=yes],
      [aix*], [       : ${LDSHARED='$(CC)'}
                      AS_IF([test "$GCC" = yes], [
                          LDSHARED="$LDSHARED ${linker_flag}-G -shared"
                      ], [
                          LDSHARED="$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) -oconftest $(INCFLAGS) -I$(hdrdir) $(CPPFLAGS)'
                      TRY_LINK="$TRY_LINK"' $(CFLAGS) $(src) $(LIBPATH) $(LDFLAGS) $(LOCAL_LIBS) $(LIBS)'
                      : ${LIBPATHENV=LIBPATH}
                      : ${PRELOADENV=LDR_PRELOAD}
                      rb_cv_dlopen=yes],
      [nto-qnx*], [   DLDFLAGS="$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'}
                      XLDFLAGS="$XLDFLAGS -Wl,--stack,0x00200000,--enable-auto-import"
                      DLDFLAGS="${DLDFLAGS} -Wl,--enable-auto-image-base,--enable-auto-import"
                      : ${LIBPATHENV=PATH}
                      : ${PRELOADENV=""}
                      rb_cv_dlopen=yes],
      [hiuxmpp], [    : ${LDSHARED='$(LD) -r'}],
      [atheos*], [    : ${LDSHARED='$(CC) -shared'}
                      rb_cv_dlopen=yes],
      [       : ${LDSHARED='$(LD)'}])
AC_MSG_RESULT($rb_cv_dlopen)

AS_IF([test "$rb_cv_dlopen" = yes], [
  AS_CASE(["$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=])
        AS_IF([test "x$flag" != x], [
          RUBY_APPEND_OPTIONS(DLDFLAGS, [$flag])
        ])
      done
    ])
])

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

]) AS_IF([test “${LDSHAREDXX}” = “”], [

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" "*], [
        ])

]) 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)

AS_IF([test “x$OPT_DIR” != x], [

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${IFS}g"
    done | tr '\012' ' ' | sed 's/ *$//'`
AS_IF([test x"$val" != x], [
    test x"${LDFLAGS}" = x || LDFLAGS="$LDFLAGS "
    LDFLAGS="$LDFLAGS$val"
    test x"${DLDFLAGS}" = x || DLDFLAGS="$DLDFLAGS "
    DLDFLAGS="$DLDFLAGS$val"
])
LDFLAGS_OPTDIR="$val"

])

AS_CASE(, [freebsd*], [

AC_CHECK_LIB([procstat], [procstat_open_sysctl])
AS_IF([test "x$ac_cv_lib_procstat_procstat_open_sysctl" = xyes], [
    AC_CHECK_FUNCS(procstat_getvmmap)
])
])

AS_CASE(, [-darwin], [

AC_CHECK_HEADERS([libproc.h])
AC_CHECK_HEADERS([execinfo.h])
AS_IF([test "x$ac_cv_header_execinfo_h" = xyes], [
    AC_CHECK_LIB([execinfo], [backtrace])
    AC_CHECK_HEADERS([libunwind.h])
])],

[-freebsd|x86_64-netbsd*], [

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

AC_CHECK_FUNCS(backtrace)

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

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>

]`grep ‘^@%:@ *define *RUBY_SIGALTSTACK_SIZE’ ${srcdir}/signal.c`[ 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;
struct sigaction sa;

ss.ss_sp = malloc(RUBY_SIGALTSTACK_SIZE);
if (ss.ss_sp == NULL) {
    fprintf(stderr, "cannot allocate memory for sigaltstack\n");
    return EXIT_FAILURE;
}
ss.ss_size = RUBY_SIGALTSTACK_SIZE;
ss.ss_flags = 0;
if (sigaltstack(&ss, NULL) == -1) {
    fprintf(stderr, "sigaltstack failed\n");
    return EXIT_FAILURE;
}
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)])
AS_IF([test "$rb_cv_broken_backtrace" = yes], [
  AC_DEFINE(BROKEN_BACKTRACE, 1)
])

])

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

AS_IF([test "$with_dln_a_out" = yes || test "$rb_cv_dlopen" = unknown], [
  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)])
  AS_IF([test "$rb_cv_dln_a_out" = yes], [
    dln_a_out_works=yes
    AC_DEFINE(USE_DLN_A_OUT)
  ])
])

])

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

AS_IF([test "$GCC" = yes], [
  STATIC=-static
], [
  STATIC=-Bstatic
])
DLEXT=so
CCDLFLAGS=

], [

AS_CASE(["$target_os"],
  [hpux*], [
      DLEXT=sl],
  [darwin*], [
      SOEXT=dylib
      DLEXT=bundle],
  [cygwin*|mingw*|*djgpp*], [
      LOAD_RELATIVE=1
      SOEXT=dll
      DLEXT=so],
  [
      DLEXT=so])

]) : ${SOEXT=“${DLEXT}”} AC_SUBST(SOEXT) AS_IF([test “$rb_cv_dlopen:$load_relative” = yes:yes], [

AS_IF([test "$ac_cv_func_dladdr" = yes], [
    LOAD_RELATIVE=1
])

]) AS_IF([test x“$LOAD_RELATIVE” = x1], [

load_relative=yes

], [

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)

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

STRIP=true

], [

AC_MSG_CHECKING([for $STRIP flags])
AC_LINK_IFELSE([AC_LANG_PROGRAM], [AS_IF(
    ["${STRIP}" -A -n conftest$ac_exeext 2>/dev/null], [
        AC_MSG_RESULT([-A -n])
        STRIP="${STRIP} -A -n"
    ],
    ["${STRIP}" -S -x conftest$ac_exeext 2>/dev/null], [
        AC_MSG_RESULT([-S -x])
        STRIP="${STRIP} -S -x"
    ], [
        AC_MSG_RESULT([none needed])
    ])
])

])

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])

AS_IF([test -n “$setup”], [

AS_IF([! test -f "ext/$setup" -o -f "$srcdir/ext/$setup"], [
    AC_MSG_ERROR(Setup file $setup not found under ext or $srcdir/ext)
])

], [test -f “$srcdir/ext/Setup.$target_os”], [

setup="Setup.$target_os"

], [

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' "$file"`
    AS_IF([test "x$platform" != x], [
        eval "AS_CASE([\"\$target_os\"], [$platform*], [break])"
    ])
    setup=
done
: ${setup:=Setup}

]) 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]]]),
[AS_IF([test "x$withval" = xno], [
    AC_MSG_ERROR([No ruby, No libprefix])
])
rubylibprefix="$withval"])

AC_SUBST(rubylibprefix)

AS_IF([test x“${exec_prefix}” != xNONE], [

RUBY_EXEC_PREFIX="$exec_prefix"

], [test x“$prefix” != xNONE], [

RUBY_EXEC_PREFIX="$prefix"

], [

RUBY_EXEC_PREFIX=$ac_default_prefix

]) 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=‘$(MINIRUBY)’ BOOTSTRAPRUBY=‘$(BASERUBY)’ AS_IF([test x“$cross_compiling” = xyes], [

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)'
TEST_RUNNABLE=no
CROSS_COMPILING=yes
AC_DEFINE(CROSS_COMPILING, 1)

], [

MINIRUBY='./miniruby$(EXEEXT) -I$(srcdir)/lib -I.'
MINIRUBY="$MINIRUBY"' -I$(EXTOUT)/common'
PREP='miniruby$(EXEEXT)'
RUNRUBY_COMMAND='$(MINIRUBY) $(tooldir)/runruby.rb --extout=$(EXTOUT) $(RUNRUBYOPT)'
RUNRUBY='$(RUNRUBY_COMMAND) --'
XRUBY='$(RUNRUBY)'
AS_CASE(["$HAVE_BASERUBY:$build_os"], [no:*|*:mingw*], [BOOTSTRAPRUBY='$(MINIRUBY)'])
TEST_RUNNABLE=yes
CROSS_COMPILING=no

]) 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=‘$(MAINLIBS)’

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])

AS_IF([test ${multiarch+set}], [

AC_DEFINE(ENABLE_MULTIARCH)
MJIT_HEADER_INSTALL_DIR=include/'${arch}/${RUBY_VERSION_NAME}'

], [

MJIT_HEADER_INSTALL_DIR=include/'${RUBY_VERSION_NAME}/${arch}'

])

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=$withval],
[
    AS_CASE(["$target_os"],
    [darwin*], [
        RUBY_SO_NAME='$(RUBY_BASE_NAME).$(RUBY_API_VERSION)'
    ],
    [cygwin*], [
        RUBY_SO_NAME='$(RUBY_BASE_NAME)$(MAJOR)$(MINOR)0'
    ],
    [mingw*], [
        RUBY_SO_NAME="${rb_cv_msvcrt}"'-$(RUBY_BASE_NAME)$(MAJOR)$(MINOR)0'
        AS_IF([test x"${target_cpu}" != xi386], [
            RUBY_SO_NAME="${target_cpu}-${RUBY_SO_NAME}"
        ])
    ],
    [RUBY_SO_NAME='$(RUBY_BASE_NAME)'])
])

LIBRUBY_LDSHARED=${DLDSHARED=${LDSHARED}} LIBRUBY_DLDFLAGS=$DLDFLAGS LIBRUBY_SO=‘lib$(RUBY_SO_NAME).$(SOEXT).$(RUBY_PROGRAM_VERSION)’ LIBRUBY_SONAME=‘lib$(RUBY_SO_NAME).$(SOEXT).$(RUBY_API_VERSION)’ LIBRUBY_ALIASES=‘lib$(RUBY_SO_NAME).$(SOEXT)’ 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

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

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

AS_CASE(["$target_os"],
  [sunos4*], [
      LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
      ],
  [linux* | gnu* | k*bsd*-gnu | atheos* | kopensolaris*-gnu | haiku*], [
      RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ['-Wl,-soname,$(LIBRUBY_SONAME)' "$LDFLAGS_OPTDIR"])
      LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
      AS_IF([test "$load_relative" = yes], [
          libprefix="'\$\${ORIGIN}/../${libdir_basename}'"
          LIBRUBY_RPATHFLAGS="-Wl,-rpath,${libprefix}"
          LIBRUBY_RELATIVE=yes
      ])
      ],
  [freebsd*|dragonfly*], [
      LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR)$(MINOR)'
      LIBRUBY_SONAME='$(LIBRUBY_SO)'
      AS_IF([test "$rb_cv_binary_elf" != "yes" ], [
          LIBRUBY_SO="$LIBRUBY_SO.\$(TEENY)"
          LIBRUBY_ALIASES=''
      ])
      ],
  [netbsd*], [
      LIBRUBY_SONAME='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR)$(MINOR)'
      LIBRUBY_SO="${LIBRUBY_SONAME}"'.$(TEENY)'
      RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ['-Wl,-soname,$(LIBRUBY_SONAME)' "$LDFLAGS_OPTDIR"])
      AS_IF([test "$rb_cv_binary_elf" = yes], [ # ELF platforms
         LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
      ], [    # a.out platforms
         LIBRUBY_ALIASES=""
      ])
      ],
  [openbsd*|mirbsd*], [
      LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR).'`expr ${MINOR} \* 10 + ${TEENY}`
      ],
  [solaris*], [
      LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT).$(MAJOR)'
      LIBRUBY_SONAME='lib$(RUBY_SO_NAME).$(SOEXT).$(RUBY_PROGRAM_VERSION)'
      LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
      RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ["${linker_flag}-h${linker_flag:+,}"'$(@F)'])
      XLDFLAGS="$XLDFLAGS "'-R${libdir}'
      ],
  [hpux*], [
      XLDFLAGS="$XLDFLAGS "'-Wl,+s,+b,$(libdir)'
      LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
      ],
  [aix*], [
      RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ["${linker_flag}-bnoentry" "$XLDFLAGS" "$LDFLAGS_OPTDIR"])
      LIBRUBYARG_SHARED='-L${libdir} -l${RUBY_SO_NAME}'
      LIBS="$LIBS -lm -lc"
      ],
  [darwin*], [
      LIBRUBY_SO='lib$(RUBY_SO_NAME).$(SOEXT)'
      LIBRUBY_SONAME='$(LIBRUBY_SO)'
      LIBRUBY_ALIASES='lib$(RUBY_INSTALL_NAME).$(SOEXT)'
      AS_IF([test "$load_relative" = yes], [
          libprefix="@executable_path/../${libdir_basename}"
          LIBRUBY_RELATIVE=yes
      ])
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS -install_name ${libprefix}"'/$(LIBRUBY_SONAME)'
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-compatibility_version $(RUBY_API_VERSION)'
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-current_version $(RUBY_PROGRAM_VERSION)'
      AS_IF([test "$visibility_option" = ld], [
          LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,_Init_*'
          LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,_ruby_static_id_*'
          LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,*_threadptr_*'
      ])
      LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "' $(XLDFLAGS)'
      ],
  [interix*], [
      LIBRUBYARG_SHARED='-L. -L${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=$enableval], [pie=])
AS_IF([test "$GCC" = yes -a -z "$EXTSTATIC" -a "x$pie" != xno], [
  RUBY_TRY_CFLAGS(-fPIE, [pie=yes], [pie=no])
  AS_IF([test "$pie" = yes], [
    # 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([$pie], [], [pie=])
      AS_IF([test "x$pie" != x], [
        RUBY_APPEND_OPTION(XCFLAGS, -fPIE)
        RUBY_APPEND_OPTION(XLDFLAGS, $pie)
        break
      ])
    done
    CFLAGS="$save_CFLAGS_before_pie"
  ])
])

]) AS_IF([test “$enable_rpath” = yes], [

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"

]) AC_SUBST(LIBRUBY_RELATIVE)

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

AS_IF([test “$EXEEXT” = .exe], [

EXECUTABLE_EXTS='".exe",".com",".cmd",".bat"'
AC_DEFINE_UNQUOTED(EXECUTABLE_EXTS, $EXECUTABLE_EXTS)
EXECUTABLE_EXTS=%x`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="$PREP"' exe/$(PROGRAM)'
    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_CASE(,[freebsd*],[

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)

AC_ARG_ENABLE(gcov,

AS_HELP_STRING([--enable-gcov], [enable coverage measurement by gcov]),
[gcov=yes])

AS_IF([test x“$gcov” = xyes], [

CFLAGS="$CFLAGS -coverage"
LDFLAGS="$LDFLAGS -coverage"

])

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_WITH(rdoc,

AS_HELP_STRING([--with-rdoc=ri,html], [comma/space separated list of RDoc formats to install]),
[install_rdoc=`echo ,$withval, | sed 'y/,/ /;s/ ri / rdoc /;s/^ *//;s/ *$//'`], [

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])

AS_IF([test “$install_doc” != no], [

AS_CASE(["$install_rdoc"],
[yes], [
    RDOCTARGET="rdoc"
],
[all], [
    RDOCTARGET="rdoc html"
],
[no|''], [
    RDOCTARGET="nodoc"
],
[
    RDOCTARGET="$install_rdoc"
])
AS_IF([test "$install_capi" != no -a -n "$DOXYGEN"], [
    CAPITARGET="capi"
], [
    CAPITARGET="nodoc"
])

], [

RDOCTARGET="nodoc"
CAPITARGET="nodoc"

])

AC_SUBST(RDOCTARGET) AC_SUBST(CAPITARGET)

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

AC_ARG_ENABLE(jit-support,

AS_HELP_STRING([--disable-jit-support], [disable JIT features]),
[MJIT_SUPPORT=$enableval
 AS_IF([test x"$enable_jit_support" = "xyes"],
         [AC_DEFINE(USE_MJIT, 1)],
         [AC_DEFINE(USE_MJIT, 0)])],
[MJIT_SUPPORT=yes
 AC_DEFINE(USE_MJIT, 1)])

AC_SUBST(MJIT_SUPPORT)

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)

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

THREAD_MODEL=pthread

]) 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)
    AC_COMPILE_IFELSE([
        AC_LANG_BOOL_COMPILE_TRY([@%:@include <AvailabilityMacros.h>],
            [MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_7])],
        [dnl
            RUBY_APPEND_OPTION(XLDFLAGS, [-framework Security])
            RUBY_APPEND_OPTION(LIBRUBYARG_STATIC, [-framework Security])
        ]dnl
    )
    RUBY_APPEND_OPTION(XLDFLAGS, [-framework Foundation])
    RUBY_APPEND_OPTION(LIBRUBYARG_STATIC, [-framework Foundation])
    ],
[osf*], [
    AS_IF([test "$GCC" != "yes" ], [
      # compile something small: taint.c is fine for this.
      # the main point is the '-v' flag of 'cc'.
      AS_CASE(["`cc -v -I. -c main.c -o /tmp/main.o 2>&1`"],
      [*/gemc_cc*], [   # we have the new DEC GEM CC
                    CFLAGS="$CFLAGS -oldc"
                    ],
      [            # we have the old MIPS CC
                    ])
      # cleanup
      rm -f /tmp/main.o
      CFLAGS="$CFLAGS -std"
    ])
    ],
[cygwin*|mingw*], [
    LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' -Wl,--out-implib=$(LIBRUBY)'
    AS_CASE(["$target_os"],
    [cygwin*], [
        AS_IF([test x"$enable_shared" = xyes], [
            LIBRUBY_SO='cyg$(RUBY_SO_NAME)'.dll
            LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
        ])
        ],
    [mingw*], [
        AS_IF([test x"$enable_shared" = xyes], [
            LIBRUBY_SO='$(RUBY_SO_NAME)'.dll
            LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
        ])
        EXPORT_PREFIX=' '
        DLDFLAGS="${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
    AS_IF([test x"$enable_shared" = xyes], [
        LIBRUBY='lib$(RUBY_SO_NAME).dll.a'
    ], [
        LIBRUBY_SO=dummy
        LIBRUBY='lib$(RUBY_SO_NAME).a'
        LIBRUBYARG='-l$(RUBY_SO_NAME)'
    ])
    ],
[hpux*], [
    AS_CASE(["$YACC"],[*yacc*], [
        XCFLAGS="$XCFLAGS -DYYMAXDEPTH=300"
        YACC="$YACC -Nl40000 -Nm40000"
    ])

])

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_SUBST(ENABLE_DEBUG_ENV, yes)])

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
    AS_IF([(cd conftest.dir; ${MAKE-make} >/dev/null 2>/dev/null)], [
        NULLCMD=$cmd
        break
    ])
done
rm -fr conftest.dir
AS_IF([test -z "$NULLCMD"], [
    AC_MSG_ERROR(no candidate for safe null command)
])
AC_MSG_RESULT($NULLCMD)

]) AC_SUBST(NULLCMD)

AS_IF([test “${universal_binary-no}” = yes ], [

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]))

])

: ${MJIT_LDSHARED=`echo “$LDSHARED” | sed [‘s|$(LD)|’“${LD}”‘|g;s|$(CC)|$(MJIT_CC)|g’]`}

MAINLIBS=“$LIBS” LIBS=$ORIG_LIBS AS_IF([test -n “${LIBS}”], [

libspat=%x`echo "${LIBS}" | sed 's/[[][|.*$^]]/\\&/g;s/^  */ /;s/^  *$/ /'`
MAINFLAGS=%x`echo " $MAINLIBS " | sed "s|$libspat"'||;s/^ *//;s/ *$//'`

]) LIBRUBYARG_STATIC=“${LIBRUBYARG_STATIC} $(MAINLIBS)” CPPFLAGS=“$CPPFLAGS ”‘$(DEFS)’ test -z “$CPPFLAGS” || CPPFLAGS=“$CPPFLAGS ”; CPPFLAGS=“$CPPFLAGS”‘${cppflags}’ AS_IF([test -n “${cflags+set}”], [

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

]) AS_IF([test -n “${cxxflags+set}”], [

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

]) AS_IF([test “${ARCH_FLAG}”], [

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

]) rb_cv_warnflags=`echo “$rb_cv_warnflags” | sed ‘s/^ *//;s/ *$//’` warnflags=“$rb_cv_warnflags” AC_SUBST(cppflags)dnl AC_SUBST(cflags, [“${orig_cflags:+$orig_cflags }”‘${optflags} ${debugflags} ${warnflags}’])dnl AC_SUBST(cxxflags)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_SONAME) 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(DLDSHARED) 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 */'])

AS_IF([test ${RUBY_LIB_VERSION_STYLE+set}], [

{
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

], [test -z “${ruby_version}”], [

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

], [

RUBY_LIB_VERSION="${ruby_version}"

]) 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}'}])

AS_IF([test “${LOAD_RELATIVE+set}”], [

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

AS_IF([test “${universal_binary-no}” = yes ], [

arch="universal-${target_os}"
AS_IF([test "${rb_cv_architecture_available}" = yes], [
    AC_DEFINE_UNQUOTED(RUBY_PLATFORM_CPU, __ARCHITECTURE__)
], [
    for archs in ${universal_archnames}; do
        cpu=`echo $archs | sed 's/.*=//'`
        archs=`echo $archs | sed 's/=.*//'`
        RUBY_DEFINE_IF([defined __${archs}__ &&! defined RUBY_PLATFORM_CPU], RUBY_PLATFORM_CPU, ["${cpu}"])
    done
])
ints='long int short'
test "$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)

], [

arch="${target_cpu}-${target_os}"
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])

AS_IF([test “$search_path” != “”], [

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)])
        ])

AS_IF([test -z “$MANTYPE”], [

dnl Looks for nroff with -mdoc support.
AC_CACHE_VAL([ac_cv_path_NROFF], [
        AC_PATH_PROGS_FEATURE_CHECK([NROFF],
                [nroff awf mandoc],
                [$ac_path_NROFF -mdoc ${srcdir}/man/ruby.1 \
                        >/dev/null 2>&1 &&
                        ac_cv_path_NROFF=$ac_path_NROFF \
                        ac_path_NROFF_found=:],
                [], ["/usr/bin:/usr/ucb"]
        )
])
AS_IF([test -n "$ac_cv_path_NROFF"], [
        MANTYPE=doc
], [
        MANTYPE=man
])

]) AC_SUBST(MANTYPE)

AC_ARG_ENABLE(rubygems,

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

AS_IF([test x“$enable_rubygems” = xno], [

USE_RUBYGEMS=no

], [

USE_RUBYGEMS=yes

]) 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’ | (

AS_IF([test "x$CONFIGURE_TTY" = xyes], [color=--color], [color=])
exec ${tooldir}/ifchange $color "${config_h}" -

) >&AS_MESSAGE_FD || 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_IF([test x“$CC_WRAPPER” != x], [

CC='$(CC_WRAPPER) '"${CC@%:@$CC_WRAPPER }"
CPP='$(CC_WRAPPER) '"${CPP@%:@$CC_WRAPPER }"
CC_WRAPPER='$(rubyarchdir)/darwin-cc'
XCC_WRAPPER='$(top_srcdir)/tool/darwin-cc'

]) AC_SUBST(CC_WRAPPER, ”) AC_SUBST(XCC_WRAPPER)

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

AS_IF([test x“$firstmf” != x], [

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

]) AC_CONFIG_FILES(Makefile:template/Makefile.in, [

tmpmk=confmk$$.tmp
{
    AS_IF([test ${VCS+set}], [
        :
    ], [git_dir=`$GIT --work-tree="$srcdir" --git-dir="$srcdir/.git" rev-parse --git-dir 2>/dev/null`], [
        VCS='$(GIT)'
    ], [
        VCS='echo cannot'
    ])
    AS_CASE("$VCS",
            ['$(GIT)'|git], [VCSUP='$(VCS) pull --rebase $(GITPULLOPTIONS)'],
            [VCSUP='$(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)'
    AS_IF([test "$gnumake" != yes], [
        echo ['$(MKFILES): $(srcdir)/common.mk']
        sed ['s/{\$([^(){}]*)[^{}]*}//g'] ${srcdir}/common.mk
    ], [
        echo 'distclean-local::; @$(RM) GNUmakefile uncommon.mk'
    ])
} > $tmpmk && AS_IF([! grep '^ruby:' $tmpmk > /dev/null], [
    AS_IF([test "${gnumake}" = yes], [
        tmpgmk=confgmk$$.tmp
        {
            echo "include $tmpmk"
            echo "-include uncommon.mk"
        } > $tmpgmk
    ], [
        tmpgmk=$tmpmk
    ]) &&
    test -z "`${MAKE-make} -f $tmpgmk info-program | grep '^PROGRAM=ruby$'`" &&
    echo 'ruby: $(PROGRAM);' >> $tmpmk
    test "$tmpmk" = "$tmpgmk" || rm -f "$tmpgmk"
]) && mv -f $tmpmk Makefile],

[EXEEXT=‘$EXEEXT’ MAKE=‘${MAKE-make}’ gnumake=‘$gnumake’ GIT=‘$GIT’])

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,

[
AS_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
    }],
[
    mv -f ruby.tmp.pc $ruby_pc
], [
    exit 1
])
],
[ruby_pc='$ruby_pc' PKG_CONFIG='$PKG_CONFIG'])

AC_OUTPUT } }

AS_IF([test “$silent” = yes], [], [ AS_IF([${FOLD+:} false], [], [ AS_IF([test “`echo abcdefg hijklmno | fold -s -w10 | sed 1d`” = hijklmno], [FOLD=“fold”], [FOLD=]) ]) fold_width=`expr $COLUMNS - 30 2>/dev/null` || fold_width=50 AS_REQUIRE_SHELL_FN(,

[AS_FUNCTION_DESCRIBE([config_summary], [NAME, VAL], [configuration summary])],
[AS_IF([test -z "$2"], [], [
    AS_ECHO_N(["   * $1:                     "]) | dd bs=1 count=26 2>/dev/null
    AS_IF([test "$FOLD"], [
        echo "$2" | fold -s -w$fold_width |
        sed '1!s/^/                          /;$!s/$/\\/'
    ], [echo "$2"])
])]

)

AS_IF([test $install_doc = yes],

[DOCTARGETS=`echo " $RDOCTARGET $CAPITARGET " | sed 's/ nodoc //g;s/^ *//;s/ *$//'`],
[DOCTARGETS=no])

echo “—” echo “Configuration summary for $RUBY_BASE_NAME version $MAJOR.$MINOR.$TEENY” echo “” config_summary “Installation prefix” “$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” “$enable_pthread” config_summary “with coroutine” “$rb_cv_coroutine” config_summary “enable shared libs” “$ENABLE_SHARED” config_summary “dynamic library ext” “$DLEXT” config_summary “CFLAGS” “$cflags” config_summary “CPPFLAGS” “$cppflags” config_summary “LDFLAGS” “$LDFLAGS” config_summary “DLDFLAGS” “$DLDFLAGS” config_summary “optflags” “$optflags” config_summary “debugflags” “$debugflags” config_summary “warnflags” “$warnflags” config_summary “strip command” “$STRIP” config_summary “install doc” “$DOCTARGETS” config_summary “JIT support” “$MJIT_SUPPORT” config_summary “man page type” “$MANTYPE” config_summary “search path” “$search_path” config_summary “static-linked-ext” ${EXTSTATIC:+“yes”} config_summary “BASERUBY -v” “$BASERUBY_VERSION” echo “” echo “—” ])