715 lines
20 KiB
Plaintext
715 lines
20 KiB
Plaintext
# configure.ac -- Go library configure script.
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# Copyright 2009 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# Process this file with autoreconf to produce configure.
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AC_PREREQ(2.64)
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AC_INIT(package-unused, version-unused,, libgo)
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AC_CONFIG_SRCDIR(Makefile.am)
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AC_CONFIG_HEADER(config.h)
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libtool_VERSION=1:0:0
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AC_SUBST(libtool_VERSION)
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AM_ENABLE_MULTILIB(, ..)
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AC_CANONICAL_SYSTEM
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target_alias=${target_alias-$host_alias}
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AM_INIT_AUTOMAKE([1.9.3 no-define foreign -Wall])
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AH_TEMPLATE(PACKAGE, [Name of package])
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AH_TEMPLATE(VERSION, [Version number of package])
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m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS])
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m4_define([_AC_ARG_VAR_PRECIOUS],[])
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AC_PROG_CC
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AC_PROG_GO
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m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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AC_SUBST(CFLAGS)
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AM_MAINTAINER_MODE
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AC_INCLUDES_DEFAULT
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AC_PROG_LD
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AC_PROG_RANLIB
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AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy)
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AC_LIBTOOL_DLOPEN
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AM_PROG_LIBTOOL
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AC_SUBST(enable_shared)
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AC_SUBST(enable_static)
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CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
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AC_SUBST(CC_FOR_BUILD)
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AC_PROG_AWK
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WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
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AC_SUBST(WARN_FLAGS)
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dnl FIXME: This should be controlled by --enable-maintainer-mode.
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WERROR="-Werror"
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AC_SUBST(WERROR)
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glibgo_toolexecdir=no
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glibgo_toolexeclibdir=no
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glibgo_prefixdir=$prefix
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AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
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AC_ARG_ENABLE([version-specific-runtime-libs],
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AC_HELP_STRING([--enable-version-specific-runtime-libs],
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[Specify that runtime libraries should be installed in a compiler-specific directory]),
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[case "$enableval" in
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yes) version_specific_libs=yes ;;
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no) version_specific_libs=no ;;
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*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
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esac],
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[version_specific_libs=no])
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AC_MSG_RESULT($version_specific_libs)
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# Version-specific runtime libs processing.
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if test $version_specific_libs = yes; then
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glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
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glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
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fi
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# Calculate glibgo_toolexecdir, glibgo_toolexeclibdir
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# Install a library built with a cross compiler in tooldir, not libdir.
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if test x"$glibgo_toolexecdir" = x"no"; then
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if test -n "$with_cross_host" &&
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test x"$with_cross_host" != x"no"; then
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glibgo_toolexecdir='${exec_prefix}/${host_alias}'
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glibgo_toolexeclibdir='${toolexecdir}/lib'
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else
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glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
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glibgo_toolexeclibdir='${libdir}'
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fi
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multi_os_directory=`$CC -print-multi-os-directory`
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case $multi_os_directory in
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.) ;; # Avoid trailing /.
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*) glibgo_toolexeclibdir=$glibgo_toolexeclibdir/$multi_os_directory ;;
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esac
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fi
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AC_SUBST(glibgo_prefixdir)
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AC_SUBST(glibgo_toolexecdir)
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AC_SUBST(glibgo_toolexeclibdir)
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# See if the user wants to configure without libffi. Some
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# architectures don't support it. FIXME: We should set a default
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# based on the host.
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AC_ARG_WITH(libffi,
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AS_HELP_STRING([--without-libffi],
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[don't use libffi]),
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[:],
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[with_libffi=${with_libffi_default-yes}])
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LIBFFI=
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LIBFFIINCS=
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if test "$with_libffi" != no; then
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AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
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LIBFFI=../libffi/libffi_convenience.la
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LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
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fi
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AC_SUBST(LIBFFI)
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AC_SUBST(LIBFFIINCS)
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# Used to tell GNU make to include a file without telling automake to
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# include it.
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go_include="-include"
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AC_SUBST(go_include)
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is_darwin=no
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is_freebsd=no
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is_irix=no
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is_linux=no
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is_netbsd=no
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is_rtems=no
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is_solaris=no
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GOOS=unknown
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case ${host} in
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*-*-darwin*) is_darwin=yes; GOOS=darwin ;;
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*-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;;
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*-*-irix6*) is_irix=yes; GOOS=irix ;;
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*-*-linux*) is_linux=yes; GOOS=linux ;;
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*-*-netbsd*) is_netbsd=yes; GOOS=netbsd ;;
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*-*-rtems*) is_rtems=yes; GOOS=rtems ;;
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*-*-solaris2*) is_solaris=yes; GOOS=solaris ;;
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esac
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AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
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AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
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AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes)
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AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
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AM_CONDITIONAL(LIBGO_IS_NETBSD, test $is_netbsd = yes)
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AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
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AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes)
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AC_SUBST(GOOS)
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dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch).
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is_386=no
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is_alpha=no
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is_arm=no
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is_m68k=no
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mips_abi=unknown
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is_ppc=no
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is_ppc64=no
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is_sparc=no
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is_sparc64=no
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is_x86_64=no
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GOARCH=unknown
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case ${host} in
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alpha*-*-*)
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is_alpha=yes
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GOARCH=alpha
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;;
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arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
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is_arm=yes
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GOARCH=arm
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;;
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changequote(,)dnl
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i[34567]86-*-* | x86_64-*-*)
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changequote([,])dnl
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AC_COMPILE_IFELSE([
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#ifdef __x86_64__
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#error 64-bit
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#endif],
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[is_386=yes], [is_x86_64=yes])
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if test "$is_386" = "yes"; then
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GOARCH=386
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else
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GOARCH=amd64
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fi
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;;
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m68k*-*-*)
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is_m68k=yes
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GOARCH=m68k
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;;
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mips*-*-*)
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AC_COMPILE_IFELSE([
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#if _MIPS_SIM != _ABIO32
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#error not o32
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#endif],
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[mips_abi="o32"],
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[AC_COMPILE_IFELSE([
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#if _MIPS_SIM != _ABIN32
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#error not n32
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#endif],
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[mips_abi="n32"],
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[AC_COMPILE_IFELSE([
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#if _MIPS_SIM != _ABI64
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#error not n64
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#endif],
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[mips_abi="n64"],
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[AC_COMPILE_IFELSE([
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#if _MIPS_SIM != _ABIO64
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#error not o64
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#endif],
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[mips_abi="o64"],
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[AC_MSG_ERROR([unknown MIPS ABI])
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[mips_abi="n32"]])])])])
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case "$mips_abi" in
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"o32") GOARCH=mipso32 ;;
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"n32") GOARCH=mipsn32 ;;
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"n64") GOARCH=mipsn64 ;;
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"o64") GOARCH=mipso64 ;;
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esac
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;;
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rs6000*-*-* | powerpc*-*-*)
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AC_COMPILE_IFELSE([
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#ifdef _ARCH_PPC64
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#error 64-bit
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#endif],
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[is_ppc=yes], [is_ppc64=yes])
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if test "$is_ppc" = "yes"; then
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GOARCH=ppc
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else
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GOARCH=ppc64
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fi
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;;
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sparc*-*-*)
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AC_COMPILE_IFELSE([
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#if defined(__sparcv9) || defined(__arch64__)
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#error 64-bit
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#endif],
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[is_sparc=yes], [is_sparc64=yes])
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if test "$is_sparc" = "yes"; then
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GOARCH=sparc
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else
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GOARCH=sparc64
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fi
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;;
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esac
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AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
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AM_CONDITIONAL(LIBGO_IS_ALPHA, test $is_alpha = yes)
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AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
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AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes)
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AM_CONDITIONAL(LIBGO_IS_MIPS, test $mips_abi != unknown)
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AM_CONDITIONAL(LIBGO_IS_MIPSO32, test $mips_abi = o32)
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AM_CONDITIONAL(LIBGO_IS_MIPSN32, test $mips_abi = n32)
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AM_CONDITIONAL(LIBGO_IS_MIPSN64, test $mips_abi = n64)
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AM_CONDITIONAL(LIBGO_IS_MIPSO64, test $mips_abi = o64)
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AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes)
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AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes)
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AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes)
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AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes)
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AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
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AC_SUBST(GOARCH)
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dnl Some files are only present when needed for specific architectures.
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GO_LIBCALL_OS_FILE=
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GO_LIBCALL_OS_ARCH_FILE=
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GO_SYSCALL_OS_FILE=
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GO_SYSCALL_OS_ARCH_FILE=
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if test -f ${srcdir}/go/syscall/libcall_${GOOS}.go; then
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GO_LIBCALL_OS_FILE=go/syscall/libcall_${GOOS}.go
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fi
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if test -f ${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go; then
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GO_LIBCALL_OS_ARCH_FILE=go/syscall/libcall_${GOOS}_${GOARCH}.go
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fi
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if test -f ${srcdir}/go/syscall/syscall_${GOOS}.go; then
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GO_SYSCALL_OS_FILE=go/syscall/syscall_${GOOS}.go
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fi
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if test -f ${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go; then
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GO_SYSCALL_OS_ARCH_FILE=go/syscall/syscall_${GOOS}_${GOARCH}.go
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fi
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AC_SUBST(GO_LIBCALL_OS_FILE)
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AC_SUBST(GO_LIBCALL_OS_ARCH_FILE)
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AC_SUBST(GO_SYSCALL_OS_FILE)
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AC_SUBST(GO_SYSCALL_OS_ARCH_FILE)
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dnl Special flags used to generate sysinfo.go.
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OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
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case "$target" in
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mips-sgi-irix6.5*)
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# IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct
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# msghdr in <sys/socket.h>.
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OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500"
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;;
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*-*-solaris2.[[89]])
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# Solaris 8/9 need this so struct msghdr gets the msg_control
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# etc. fields in <sys/socket.h> (_XPG4_2).
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OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED -D__EXTENSIONS__"
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;;
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*-*-solaris2.1[[01]])
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# Solaris 10+ needs this so struct msghdr gets the msg_control
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# etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as
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# above doesn't work with C99.
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OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__"
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;;
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esac
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AC_SUBST(OSCFLAGS)
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dnl Use -fsplit-stack when compiling C code if available.
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AC_CACHE_CHECK([whether -fsplit-stack is supported],
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[libgo_cv_c_split_stack_supported],
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[CFLAGS_hold=$CFLAGS
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CFLAGS="$CFLAGS -fsplit-stack"
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AC_COMPILE_IFELSE([[int i;]],
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[libgo_cv_c_split_stack_supported=yes],
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[libgo_cv_c_split_stack_supported=no])
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CFLAGS=$CFLAGS_hold])
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if test "$libgo_cv_c_split_stack_supported" = yes; then
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SPLIT_STACK=-fsplit-stack
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AC_DEFINE(USING_SPLIT_STACK, 1,
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[Define if the compiler supports -fsplit-stack])
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else
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SPLIT_STACK=
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fi
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AC_SUBST(SPLIT_STACK)
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AM_CONDITIONAL(USING_SPLIT_STACK,
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test "$libgo_cv_c_split_stack_supported" = yes)
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dnl Check whether the linker does stack munging when calling from
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dnl split-stack into non-split-stack code. We check this by looking
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dnl at the --help output. FIXME: This is only half right: it's
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dnl possible for the linker to support this for some targets but not
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dnl others.
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AC_CACHE_CHECK([whether linker supports split stack],
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[libgo_cv_c_linker_supports_split_stack],
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libgo_cv_c_linker_supports_split_stack=no
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if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
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libgo_cv_c_linker_supports_split_stack=yes
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fi)
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if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
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AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
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[Define if the linker support split stack adjustments])
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fi
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dnl Test for the -lm library.
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MATH_LIBS=
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AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
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AC_SUBST(MATH_LIBS)
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dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac.
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AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
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[libgo_cv_lib_sockets=
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libgo_check_both=no
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AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes)
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if test "$libgo_check_socket" = "yes"; then
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unset ac_cv_func_connect
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AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket",
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libgo_check_both=yes)
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fi
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if test "$libgo_check_both" = "yes"; then
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libgo_old_libs=$LIBS
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LIBS="$LIBS -lsocket -lnsl"
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unset ac_cv_func_accept
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AC_CHECK_FUNC(accept,
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[libgo_check_nsl=no
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libgo_cv_lib_sockets="-lsocket -lnsl"])
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unset ac_cv_func_accept
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LIBS=$libgo_old_libs
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fi
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unset ac_cv_func_gethostbyname
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libgo_old_libs="$LIBS"
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AC_CHECK_FUNC(gethostbyname, ,
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[AC_CHECK_LIB(nsl, main,
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[libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])])
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unset ac_cv_func_gethostbyname
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LIBS=$libgo_old_libs
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])
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NET_LIBS="$libgo_cv_lib_sockets"
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AC_SUBST(NET_LIBS)
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dnl Test whether the compiler supports the -pthread option.
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AC_CACHE_CHECK([whether -pthread is supported],
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[libgo_cv_lib_pthread],
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[CFLAGS_hold=$CFLAGS
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CFLAGS="$CFLAGS -pthread"
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AC_COMPILE_IFELSE([[int i;]],
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[libgo_cv_lib_pthread=yes],
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[libgo_cv_lib_pthread=no])
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CFLAGS=$CFLAGS_hold])
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PTHREAD_CFLAGS=
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if test "$libgo_cv_lib_pthread" = yes; then
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PTHREAD_CFLAGS=-pthread
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fi
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AC_SUBST(PTHREAD_CFLAGS)
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dnl Test for the -lpthread library.
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PTHREAD_LIBS=
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AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
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AC_SUBST(PTHREAD_LIBS)
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dnl Test if -lrt is required for sched_yield.
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AC_SEARCH_LIBS([sched_yield], [rt])
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AC_C_BIGENDIAN
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GCC_CHECK_UNWIND_GETIPINFO
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AC_ARG_ENABLE(sjlj-exceptions,
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AC_HELP_STRING([--enable-sjlj-exceptions],
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[force use of builtin_setjmp for exceptions]),
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[case "$enableval" in
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yes|no|auto) ;;
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*) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;
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esac],
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[enable_sjlj_exceptions=auto])
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AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],
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[libgo_cv_lib_sjlj_exceptions],
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[AC_LANG_CONFTEST(
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[AC_LANG_SOURCE([
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void bar ();
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void clean (int *);
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void foo ()
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{
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int i __attribute__ ((cleanup (clean)));
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bar();
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}
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])])
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CFLAGS_hold=$CFLAGS
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CFLAGS="--save-temps -fexceptions"
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libgo_cv_lib_sjlj_exceptions=unknown
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AS_IF([ac_fn_c_try_compile],
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[if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
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libgo_cv_lib_sjlj_exceptions=yes
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elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
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libgo_cv_lib_sjlj_exceptions=no
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fi])
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CFLAGS=$CFLAGS_hold
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rm -f conftest*
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])
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if test "$enable_sjlj_exceptions" = "auto"; then
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enable_sjlj_exceptions=$libgo_cv_lib_sjlj_exceptions
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fi
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case $enable_sjlj_exceptions in
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|
yes)
|
|
AC_DEFINE(LIBGO_SJLJ_EXCEPTIONS, 1,
|
|
[Define if the C++ compiler is configured for setjmp/longjmp exceptions.])
|
|
;;
|
|
no)
|
|
;;
|
|
*)
|
|
AC_MSG_ERROR([unable to detect exception model])
|
|
;;
|
|
esac
|
|
|
|
AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/if.h sys/prctl.h)
|
|
|
|
AC_CHECK_HEADERS([linux/filter.h linux/netlink.h linux/rtnetlink.h], [], [],
|
|
[#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
])
|
|
|
|
AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
|
|
|
|
AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv)
|
|
AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes)
|
|
AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes)
|
|
|
|
AC_CHECK_FUNCS(epoll_create1 faccessat fchmodat fchownat futimesat inotify_add_watch inotify_init inotify_rm_watch mkdirat mknodat openat renameat splice tee unlinkat unshare)
|
|
AC_CHECK_TYPES([loff_t])
|
|
|
|
CFLAGS_hold="$CFLAGS"
|
|
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
LIBS_hold="$LIBS"
|
|
LIBS="$LIBS $PTHREAD_LIBS"
|
|
AC_CHECK_FUNCS(sem_timedwait)
|
|
CFLAGS="$CFLAGS_hold"
|
|
LIBS="$LIBS_hold"
|
|
|
|
LIBS_hold="$LIBS"
|
|
LIBS="$LIBS $MATH_LIBS"
|
|
AC_CHECK_FUNCS(matherr)
|
|
LIBS="$LIBS_hold"
|
|
|
|
AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4],
|
|
[libgo_cv_func___sync_bool_compare_and_swap_4],
|
|
[AC_LINK_IFELSE([
|
|
typedef unsigned int uint32 __attribute__ ((mode (SI)));
|
|
uint32 i;
|
|
int main() { return __sync_bool_compare_and_swap (&i, 0, 1); }
|
|
],
|
|
[libgo_cv_func___sync_bool_compare_and_swap_4=yes],
|
|
[libgo_cv_func___sync_bool_compare_and_swap_4=no])])
|
|
if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then
|
|
AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4, 1,
|
|
[Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32])
|
|
fi
|
|
|
|
AC_CACHE_CHECK([for __sync_fetch_and_add_4],
|
|
[libgo_cv_func___sync_fetch_and_add_4],
|
|
[AC_LINK_IFELSE([
|
|
typedef unsigned int uint32 __attribute__ ((mode (SI)));
|
|
uint32 i;
|
|
int main() { return __sync_fetch_and_add (&i, 1); }
|
|
],
|
|
[libgo_cv_func___sync_fetch_and_add_4=yes],
|
|
[libgo_cv_func___sync_fetch_and_add_4=no])])
|
|
if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then
|
|
AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1,
|
|
[Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32])
|
|
fi
|
|
|
|
dnl For x86 we want to use the -minline-all-stringops option to avoid
|
|
dnl forcing a stack split when calling memcpy and friends.
|
|
AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
|
|
[libgo_cv_c_stringops],
|
|
[CFLAGS_hold=$CFLAGS
|
|
CFLAGS="$CFLAGS -minline-all-stringops"
|
|
AC_COMPILE_IFELSE([int i;],
|
|
[libgo_cv_c_stringops=yes],
|
|
[libgo_cv_c_stringops=no])
|
|
CFLAGS=$CFLAGS_hold])
|
|
STRINGOPS_FLAG=
|
|
if test "$libgo_cv_c_stringops" = yes; then
|
|
STRINGOPS_FLAG=-minline-all-stringops
|
|
fi
|
|
AC_SUBST(STRINGOPS_FLAG)
|
|
|
|
dnl For x86 we want to compile the math library with -mfancy-math-387
|
|
dnl -funsafe-math-optimizations so that we can use the builtin
|
|
dnl instructions directly.
|
|
AC_CACHE_CHECK([whether compiler supports -mfancy-math-387],
|
|
[libgo_cv_c_fancymath],
|
|
[CFLAGS_hold=$CFLAGS
|
|
CFLAGS="$CFLAGS -mfancy-math-387"
|
|
AC_COMPILE_IFELSE([int i;],
|
|
[libgo_cv_c_fancymath=yes],
|
|
[libgo_cv_c_fancymath=no])
|
|
CFLAGS=$CFLAGS_hold])
|
|
MATH_FLAG=
|
|
if test "$libgo_cv_c_fancymath" = yes; then
|
|
MATH_FLAG="-mfancy-math-387 -funsafe-math-optimizations"
|
|
fi
|
|
AC_SUBST(MATH_FLAG)
|
|
|
|
CFLAGS_hold=$CFLAGS
|
|
CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
|
|
AC_CHECK_TYPES([off64_t])
|
|
CFLAGS=$CFLAGS_hold
|
|
|
|
dnl Work out the size of the epoll_events struct on GNU/Linux.
|
|
AC_CACHE_CHECK([epoll_event size],
|
|
[libgo_cv_c_epoll_event_size],
|
|
[AC_COMPUTE_INT(libgo_cv_c_epoll_event_size,
|
|
[sizeof (struct epoll_event)],
|
|
[#include <sys/epoll.h>],
|
|
[libgo_cv_c_epoll_event_size=0])])
|
|
SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size}
|
|
AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT)
|
|
|
|
dnl Work out the offset of the fd field in the epoll_events struct on
|
|
dnl GNU/Linux.
|
|
AC_CACHE_CHECK([epoll_event data.fd offset],
|
|
[libgo_cv_c_epoll_event_fd_offset],
|
|
[AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset,
|
|
[offsetof (struct epoll_event, data.fd)],
|
|
[#include <stddef.h>
|
|
#include <sys/epoll.h>],
|
|
[libgo_cv_c_epoll_event_fd_offset=0])])
|
|
STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset}
|
|
AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET)
|
|
|
|
dnl See if struct exception is defined in <math.h>.
|
|
AC_CHECK_TYPE([struct exception],
|
|
[libgo_has_struct_exception=yes],
|
|
[libgo_has_struct_exception=no],
|
|
[#include <math.h>])
|
|
if test "$libgo_has_struct_exception" = "yes"; then
|
|
AC_DEFINE(HAVE_STRUCT_EXCEPTION, 1,
|
|
[Define to 1 if <math.h> defines struct exception])
|
|
fi
|
|
|
|
dnl See whether setcontext changes the value of TLS variables.
|
|
AC_CACHE_CHECK([whether setcontext clobbers TLS variables],
|
|
[libgo_cv_lib_setcontext_clobbers_tls],
|
|
[CFLAGS_hold="$CFLAGS"
|
|
CFLAGS="$PTHREAD_CFLAGS"
|
|
LIBS_hold="$LIBS"
|
|
LIBS="$LIBS $PTHREAD_LIBS"
|
|
AC_CHECK_SIZEOF([void *])
|
|
AS_VAR_ARITH([ptr_type_size], [$ac_cv_sizeof_void_p \* 8])
|
|
AC_RUN_IFELSE(
|
|
[AC_LANG_SOURCE([
|
|
#include <pthread.h>
|
|
#include <stdlib.h>
|
|
#include <ucontext.h>
|
|
#include <unistd.h>
|
|
|
|
__thread int tls;
|
|
|
|
static char stack[[10 * 1024 * 1024]];
|
|
static ucontext_t c;
|
|
|
|
/* Called via makecontext/setcontext. */
|
|
|
|
static void
|
|
cfn (void)
|
|
{
|
|
exit (tls);
|
|
}
|
|
|
|
/* Called via pthread_create. */
|
|
|
|
static void *
|
|
tfn (void *dummy)
|
|
{
|
|
/* The thread should still see this value after calling
|
|
setcontext. */
|
|
tls = 0;
|
|
|
|
setcontext (&c);
|
|
|
|
/* The call to setcontext should not return. */
|
|
abort ();
|
|
}
|
|
|
|
int
|
|
main ()
|
|
{
|
|
pthread_t tid;
|
|
|
|
/* The thread should not see this value. */
|
|
tls = 1;
|
|
|
|
if (getcontext (&c) < 0)
|
|
abort ();
|
|
|
|
c.uc_stack.ss_sp = stack;
|
|
c.uc_stack.ss_flags = 0;
|
|
c.uc_stack.ss_size = sizeof stack;
|
|
c.uc_link = NULL;
|
|
makecontext (&c, cfn, 0);
|
|
|
|
if (pthread_create (&tid, NULL, tfn, NULL) != 0)
|
|
abort ();
|
|
|
|
if (pthread_join (tid, NULL) != 0)
|
|
abort ();
|
|
|
|
/* The thread should have called exit. */
|
|
abort ();
|
|
}
|
|
])],
|
|
[libgo_cv_lib_setcontext_clobbers_tls=no],
|
|
[libgo_cv_lib_setcontext_clobbers_tls=yes],
|
|
[case "$target:$ptr_type_size" in
|
|
i?86-*-solaris2.1[[01]]:64 | x86_64*-*-solaris2.1[[01]]:64)
|
|
libgo_cv_lib_setcontext_clobbers_tls=yes ;;
|
|
*)
|
|
libgo_cv_lib_setcontext_clobbers_tls=no ;;
|
|
esac
|
|
])
|
|
CFLAGS="$CFLAGS_hold"
|
|
LIBS="$LIBS_hold"
|
|
])
|
|
if test "$libgo_cv_lib_setcontext_clobbers_tls" = "yes"; then
|
|
AC_DEFINE(SETCONTEXT_CLOBBERS_TLS, 1,
|
|
[Define if setcontext clobbers TLS variables])
|
|
fi
|
|
|
|
AC_CACHE_SAVE
|
|
|
|
if test ${multilib} = yes; then
|
|
multilib_arg="--enable-multilib"
|
|
else
|
|
multilib_arg=
|
|
fi
|
|
|
|
AC_CONFIG_FILES(Makefile testsuite/Makefile)
|
|
|
|
AC_CONFIG_COMMANDS([default],
|
|
[if test -n "$CONFIG_FILES"; then
|
|
# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
|
|
# that multilib installs will end up installed in the correct place.
|
|
# The testsuite needs it for multilib-aware ABI baseline files.
|
|
# To work around this not being passed down from config-ml.in ->
|
|
# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
|
|
# append it here. Only modify Makefiles that have just been created.
|
|
#
|
|
# Also, get rid of this simulated-VPATH thing that automake does.
|
|
cat > vpsed << \_EOF
|
|
s!`test -f '$<' || echo '$(srcdir)/'`!!
|
|
_EOF
|
|
for i in $SUBDIRS; do
|
|
case $CONFIG_FILES in
|
|
*${i}/Makefile*)
|
|
#echo "Adding MULTISUBDIR to $i/Makefile"
|
|
sed -f vpsed $i/Makefile > tmp
|
|
grep '^MULTISUBDIR =' Makefile >> tmp
|
|
mv tmp $i/Makefile
|
|
;;
|
|
esac
|
|
done
|
|
rm vpsed
|
|
fi
|
|
],
|
|
[
|
|
# Variables needed in config.status (file generation) which aren't already
|
|
# passed by autoconf.
|
|
SUBDIRS="$SUBDIRS"
|
|
])
|
|
|
|
AC_OUTPUT
|