0cdde1e7ae
On NetBSD, for backwards compatibility, various libc symbols are
renamed to a symbol with a version suffix. For example, this is the
(abbreviated) definition of sigaction:
int sigaction(...) __asm__ ("__sigaction14")
This poses a challenge for libgo, which attempts to link sigaction by
way of an "//extern" comment:
//extern sigaction
func sigaction(...)
This results in a reference to the deprecated compatibility symbol
"sigaction", rather than the desired "__sigaction14" symbol.
This patch introduces a new "//extern-sysinfo" comment to handle this
situation. The new mklinknames.awk script scans a package for these
comments and outputs a "//go:linkname" directive that links the wrapper
to the correct versioned symbol, as determined by parsing the __asm__
annotation on the function's declaration in gen-sysinfo.go.
For now, only the following packages are scanned by mklinknames.awk:
os
os/user
runtime
syscall
gotools/:
* Makefile.am (check-runtime): Add runtime_linknames.go to
--extrafiles.
* Makefile.in: Regenerate.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/265125
948 lines
28 KiB
Plaintext
948 lines
28 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_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=17:0:0
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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 no-dist subdir-objects -Wall -Wno-portability -Wno-override])
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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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AM_PROG_AS
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m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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AC_SUBST(CFLAGS)
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case ${host} in
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*-*-aix*)
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# Check default architecture for FAT library creation
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if test -z "`$CC -x c -E /dev/null -g3 -o - | grep 64BIT`" ; then
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AIX_EXTRA_ARCH='64'
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else
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AIX_EXTRA_ARCH='32'
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fi
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AC_SUBST(AIX_EXTRA_ARCH)
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;;
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esac
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AM_MAINTAINER_MODE
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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=${CC_FOR_BUILD:-gcc}
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AC_SUBST(CC_FOR_BUILD)
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AC_PROG_AWK
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WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
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AC_SUBST(WARN_FLAGS)
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AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror],
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[turns on -Werror @<:@default=yes@:>@])])
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if test "x$enable_werror" != "xno"; then
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WERROR="-Werror"
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fi
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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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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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GCC_WITH_TOOLEXECLIBDIR
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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 -n "$with_cross_host" &&
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test x"$with_cross_host" != x"no"; then
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nover_glibgo_toolexecdir='${exec_prefix}/${host_alias}'
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case ${with_toolexeclibdir} in
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no)
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nover_glibgo_toolexeclibdir='${toolexecdir}/lib'
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;;
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*)
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nover_glibgo_toolexeclibdir=${with_toolexeclibdir}
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;;
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esac
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else
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nover_glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
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nover_glibgo_toolexeclibdir='${libdir}'
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fi
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multi_os_directory=`$GOC -print-multi-os-directory`
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case $multi_os_directory in
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.) ;; # Avoid trailing /.
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*) nover_glibgo_toolexeclibdir=${nover_glibgo_toolexeclibdir}/${multi_os_directory} ;;
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esac
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if test x"$glibgo_toolexecdir" = x"no"; then
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glibgo_toolexecdir="${nover_glibgo_toolexecdir}"
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glibgo_toolexeclibdir="${nover_glibgo_toolexeclibdir}"
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fi
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AC_SUBST(glibgo_toolexecdir)
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AC_SUBST(glibgo_toolexeclibdir)
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AC_SUBST(nover_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$(top_srcdir)/../libffi/include -I../libffi/include'
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fi
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AC_SUBST(LIBFFI)
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AC_SUBST(LIBFFIINCS)
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AM_CONDITIONAL(USE_LIBFFI, test "$with_libffi" != "no")
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# See if the user wants to configure without libatomic. This is useful if we are
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# on an architecture for which libgo does not need an atomic support library and
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# libatomic does not support our C compiler.
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AC_ARG_WITH(libatomic,
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AS_HELP_STRING([--without-libatomic],
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[don't use libatomic]),
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[:],
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[with_libatomic=${with_libatomic_default-yes}])
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LIBATOMIC=
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if test "$with_libatomic" != no; then
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LIBATOMIC=../libatomic/libatomic_convenience.la
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fi
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AC_SUBST(LIBATOMIC)
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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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# All known GOOS values. This is the union of all operating systems
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# supported by the gofrontend and all operating systems supported by
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# the gc toolchain.
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ALLGOOS="aix android darwin dragonfly freebsd hurd illumos irix js linux netbsd openbsd plan9 rtems solaris windows"
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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_openbsd=no
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is_dragonfly=no
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is_rtems=no
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is_solaris=no
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is_aix=no
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is_hurd=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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*-*-openbsd*) is_openbsd=yes; GOOS=openbsd ;;
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*-*-dragonfly*) is_dragonfly=yes; GOOS=dragonfly ;;
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*-*-rtems*) is_rtems=yes; GOOS=rtems ;;
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*-*-solaris2*) is_solaris=yes; GOOS=solaris ;;
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*-*-aix*) is_aix=yes; GOOS=aix ;;
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*-*-gnu*) is_hurd=yes; GOOS=hurd ;;
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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_OPENBSD, test $is_openbsd = yes)
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AM_CONDITIONAL(LIBGO_IS_DRAGONFLY, test $is_dragonfly = 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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AM_CONDITIONAL(LIBGO_IS_AIX, test $is_aix = yes)
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AM_CONDITIONAL(LIBGO_IS_HURD, test $is_hurd = yes)
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AM_CONDITIONAL(LIBGO_IS_BSD, test $is_darwin = yes -o $is_dragonfly = yes -o $is_freebsd = yes -o $is_netbsd = yes -o $is_openbsd = yes)
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AC_SUBST(GOOS)
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AC_SUBST(ALLGOOS)
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dnl Test whether we need to use DejaGNU or whether we can use the
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dnl simpler gotest approach. We can only use gotest for a native
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dnl build.
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USE_DEJAGNU=no
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case ${host} in
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*-*-rtems*) USE_DEJAGNU=yes ;;
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${build}) ;;
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*) USE_DEJAGNU=yes ;;
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esac
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AC_SUBST(USE_DEJAGNU)
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# All known GOARCH values. This is the union of all architectures
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# supported by the gofrontend and all architectures supported by the
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# gc toolchain.
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# To add a new architecture:
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# - add it to this list
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# - if appropriate, add an entry to ALLGOARCHFAMILY below
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# - add an entry to the case on ${host} below to set GOARCH
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# - update goarchList in libgo/go/go/build/syslist.go
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# - update goarch.sh to report the values for this architecture
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# - update go-set-goarch in gcc/testsuite/go.test/go-test.exp
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# - update ptrSizeMap and intSizeMap in libgo/go/cmd/cgo/main.go
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# - update arch lists in libgo/match.sh
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# - update arch lists in libgo/testsuite/gotest
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# - update +build lines in several places
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# - libgo/go/runtime/lfstack_NNbit.go
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# - libgo/go/runtime/hashNN.go
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# - libgo/go/runtime/unalignedN.go
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# - libgo/go/syscall/endian_XX.go
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# - possibly others
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# - possibly update files in libgo/go/internal/syscall/unix
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ALLGOARCH="386 alpha amd64 amd64p32 arm armbe arm64 arm64be ia64 m68k mips mipsle mips64 mips64le mips64p32 mips64p32le nios2 ppc ppc64 ppc64le riscv riscv64 s390 s390x sh shbe sparc sparc64 wasm"
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# All known GOARCH family values.
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ALLGOARCHFAMILY="I386 ALPHA AMD64 ARM ARM64 IA64 M68K MIPS MIPS64 NIOS2 PPC PPC64 RISCV RISCV64 S390 S390X SH SPARC SPARC64 WASM"
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GOARCH=unknown
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case ${host} in
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alpha*-*-*)
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GOARCH=alpha
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;;
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aarch64-*-*)
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GOARCH=arm64
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;;
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aarch64_be-*-*)
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GOARCH=arm64be
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;;
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arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
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GOARCH=arm
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case ${host} in
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arm*b*-*-*)
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GOARCH=armbe
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;;
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esac
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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([AC_LANG_SOURCE([
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#ifdef __x86_64__
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#error 64-bit
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#endif
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])],
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[GOARCH=386],
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#ifdef __ILP32__
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#error x32
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#endif
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])],
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[GOARCH=amd64],
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[GOARCH=amd64p32]))
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;;
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ia64-*-*)
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GOARCH=ia64
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;;
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m68k*-*-*)
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GOARCH=m68k
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;;
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mips*-*-*)
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if _MIPS_SIM != _ABIO32
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#error not o32
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#endif
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])],
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[mips_abi="o32"],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if _MIPS_SIM != _ABIN32
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#error not n32
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#endif
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])],
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[mips_abi="n32"],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if _MIPS_SIM != _ABI64
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#error not n64
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#endif
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])],
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[mips_abi="n64"],
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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=mips ;;
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"n32") GOARCH=mips64p32 ;;
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"n64") GOARCH=mips64 ;;
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esac
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case "${host}" in
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mips*el-*-*)
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GOARCH="${GOARCH}le"
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;;
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esac
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;;
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nios2-*-*)
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GOARCH=nios2
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;;
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rs6000*-*-* | powerpc*-*-*)
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#ifdef _ARCH_PPC64
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#error 64-bit
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#endif
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])],
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[GOARCH=ppc],
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[
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__)
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#error 64be
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#endif
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])],
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[GOARCH=ppc64le],
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[GOARCH=ppc64])])
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;;
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riscv*-*-*)
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if __riscv_xlen == 64
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#error 64-bit
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#endif
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])],
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[GOARCH=riscv],
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[GOARCH=riscv64])
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;;
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s390*-*-*)
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if defined(__s390x__)
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#error 64-bit
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#endif
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])],
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[GOARCH=s390],
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[GOARCH=s390x])
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;;
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sh3eb*-*-* | sh4eb*-*-*)
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GOARCH=shbe
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;;
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sh3*-*-* | sh4*-*-*)
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GOARCH=sh
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;;
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sparc*-*-*)
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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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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])],
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[GOARCH=sparc],
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[GOARCH=sparc64])
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;;
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esac
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AC_SUBST(GOARCH)
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AC_SUBST(ALLGOARCH)
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AC_SUBST(ALLGOARCHFAMILY)
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AM_CONDITIONAL(LIBGO_IS_X86, test "$GOARCH" = "386" -o "$GOARCH" = "amd64" -o "$GOARCH" = "amd64p32")
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FUNCTION_DESCRIPTORS=false
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case ${host} in
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rs6000*-*-* | powerpc*-*-*)
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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|
#if _CALL_ELF == 1
|
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#error descriptors
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|
#endif
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])],
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[FUNCTION_DESCRIPTORS=false],
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[FUNCTION_DESCRIPTORS=true])
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;;
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esac
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AC_SUBST(FUNCTION_DESCRIPTORS)
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dnl Some files are only present when needed for specific architectures.
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GO_LIBCALL_OS_FILE=
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GO_LIBCALL_OS_ARCH_FILE=
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GO_SYSCALL_OS_FILE=
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GO_SYSCALL_OS_ARCH_FILE=
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|
if test -f "${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}_${GOARCH}.go"
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fi
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AC_SUBST(GO_LIBCALL_OS_FILE)
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AC_SUBST(GO_LIBCALL_OS_ARCH_FILE)
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AC_SUBST(GO_SYSCALL_OS_FILE)
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AC_SUBST(GO_SYSCALL_OS_ARCH_FILE)
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|
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dnl Special flags used to generate sysinfo.go.
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OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
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case "$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="$OSCFLAGS -D_XOPEN_SOURCE=500"
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;;
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*-*-solaris2.*)
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|
# Solaris 10+ needs this so struct msghdr gets the msg_control
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# etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as
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# above doesn't work with C99.
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OSCFLAGS="$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 Check if assembler supports disabling hardware capability support.
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|
GCC_CHECK_ASSEMBLER_HWCAP
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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],
|
|
[CFLAGS_hold=$CFLAGS
|
|
CFLAGS="$CFLAGS -fsplit-stack"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])],
|
|
[libgo_cv_c_split_stack_supported=yes],
|
|
[libgo_cv_c_split_stack_supported=no])
|
|
CFLAGS=$CFLAGS_hold])
|
|
|
|
dnl Make sure the linker permits -fsplit-stack. Old versions of gold will
|
|
dnl reject split-stack code calling non-split-stack code on targets
|
|
dnl they don't support.
|
|
AC_CACHE_CHECK([whether linker supports split/non-split linked together],
|
|
[libgo_cv_c_linker_split_non_split],
|
|
[cat > conftest1.c << EOF
|
|
extern void f();
|
|
int main() { f(); return 0; }
|
|
EOF
|
|
cat > conftest2.c << EOF
|
|
void f() {}
|
|
EOF
|
|
$CC -c -fsplit-stack $CFLAGS $CPPFLAGS conftest1.c >/dev/null 2>&1
|
|
$CC -c $CFLAGS $CPPFLAGS conftest2.c > /dev/null 2>&1
|
|
if $CC -o conftest conftest1.$ac_objext conftest2.$ac_objext > /dev/null 2>&1; then
|
|
libgo_cv_c_linker_split_non_split=yes
|
|
else
|
|
libgo_cv_c_linker_split_non_split=no
|
|
fi
|
|
rm -f conftest1.* conftest2.* conftest])
|
|
|
|
if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes; then
|
|
SPLIT_STACK=-fsplit-stack
|
|
AC_DEFINE(USING_SPLIT_STACK, 1,
|
|
[Define if the compiler supports -fsplit-stack])
|
|
else
|
|
SPLIT_STACK=
|
|
fi
|
|
AC_SUBST(SPLIT_STACK)
|
|
AM_CONDITIONAL(USING_SPLIT_STACK,
|
|
test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes)
|
|
|
|
dnl If the compiler supports split-stack but the linker does not, then
|
|
dnl we need to explicitly disable split-stack for Go.
|
|
if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = no; then
|
|
GO_SPLIT_STACK=-fno-split-stack
|
|
else
|
|
GO_SPLIT_STACK=
|
|
fi
|
|
AC_SUBST(GO_SPLIT_STACK)
|
|
|
|
dnl Check whether the linker does stack munging when calling from
|
|
dnl split-stack into non-split-stack code. We check this by looking
|
|
dnl at the --help output. FIXME: This is only half right: it's
|
|
dnl possible for the linker to support this for some targets but not
|
|
dnl others.
|
|
dnl This is slightly different from the above check, which is whether
|
|
dnl the linker permits the call at all.
|
|
AC_CACHE_CHECK([whether linker supports split stack],
|
|
[libgo_cv_c_linker_supports_split_stack],
|
|
[libgo_cv_c_linker_supports_split_stack=no
|
|
if $GOC -Wl,--help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
|
|
libgo_cv_c_linker_supports_split_stack=yes
|
|
fi])
|
|
if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
|
|
AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
|
|
[Define if the linker support split stack adjustments])
|
|
fi
|
|
|
|
AC_CACHE_CHECK([whether compiler is llgo],
|
|
[libgo_cv_c_goc_is_llgo],
|
|
[libgo_cv_c_goc_is_llgo=no
|
|
if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then
|
|
libgo_cv_c_goc_is_llgo=yes
|
|
fi])
|
|
AM_CONDITIONAL(GOC_IS_LLGO, test "$libgo_cv_c_goc_is_llgo" = yes)
|
|
|
|
dnl Test for the -lm library.
|
|
MATH_LIBS=
|
|
AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
|
|
AC_SUBST(MATH_LIBS)
|
|
|
|
dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac.
|
|
AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
|
|
[libgo_cv_lib_sockets=
|
|
libgo_check_both=no
|
|
AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes)
|
|
if test "$libgo_check_socket" = "yes"; then
|
|
unset ac_cv_func_connect
|
|
AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket",
|
|
libgo_check_both=yes)
|
|
fi
|
|
if test "$libgo_check_both" = "yes"; then
|
|
libgo_old_libs=$LIBS
|
|
LIBS="$LIBS -lsocket -lnsl"
|
|
unset ac_cv_func_accept
|
|
AC_CHECK_FUNC(accept,
|
|
[libgo_check_nsl=no
|
|
libgo_cv_lib_sockets="-lsocket -lnsl"])
|
|
unset ac_cv_func_accept
|
|
LIBS=$libgo_old_libs
|
|
fi
|
|
unset ac_cv_func_gethostbyname
|
|
libgo_old_libs="$LIBS"
|
|
AC_CHECK_FUNC(gethostbyname, ,
|
|
[AC_CHECK_LIB(nsl, main,
|
|
[libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])])
|
|
unset ac_cv_func_gethostbyname
|
|
AC_CHECK_FUNC(sendfile, ,
|
|
[AC_CHECK_LIB(sendfile, main,
|
|
[libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lsendfile"])])
|
|
LIBS=$libgo_old_libs
|
|
])
|
|
NET_LIBS="$libgo_cv_lib_sockets"
|
|
AC_SUBST(NET_LIBS)
|
|
|
|
dnl Test whether the compiler supports the -pthread option.
|
|
AC_CACHE_CHECK([whether -pthread is supported],
|
|
[libgo_cv_lib_pthread],
|
|
[CFLAGS_hold=$CFLAGS
|
|
CFLAGS="$CFLAGS -pthread -L../libatomic/.libs"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])],
|
|
[libgo_cv_lib_pthread=yes],
|
|
[libgo_cv_lib_pthread=no])
|
|
CFLAGS=$CFLAGS_hold])
|
|
PTHREAD_CFLAGS=
|
|
if test "$libgo_cv_lib_pthread" = yes; then
|
|
# RISC-V apparently adds -latomic when using -pthread.
|
|
PTHREAD_CFLAGS="-pthread -L../libatomic/.libs"
|
|
fi
|
|
AC_SUBST(PTHREAD_CFLAGS)
|
|
|
|
dnl Test for the -lpthread library.
|
|
PTHREAD_LIBS=
|
|
AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
|
|
AC_SUBST(PTHREAD_LIBS)
|
|
|
|
dnl Test if -lrt is required for sched_yield or nanosleep or clock_gettime.
|
|
AC_SEARCH_LIBS([sched_yield], [rt])
|
|
AC_SEARCH_LIBS([nanosleep], [rt])
|
|
AC_SEARCH_LIBS([clock_gettime], [rt])
|
|
|
|
AC_C_BIGENDIAN
|
|
|
|
GCC_CHECK_UNWIND_GETIPINFO
|
|
|
|
AC_CHECK_HEADERS(port.h sched.h semaphore.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/event.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/sysctl.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/bpf.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/ptrace.h linux/reboot.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h lwp.h)
|
|
|
|
AC_CHECK_HEADERS([netinet/icmp6.h], [], [],
|
|
[#include <netinet/in.h>
|
|
])
|
|
|
|
AC_CHECK_HEADERS([linux/filter.h linux/if_addr.h linux/if_ether.h linux/if_tun.h linux/netlink.h linux/rtnetlink.h], [], [],
|
|
[#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
])
|
|
|
|
AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
|
|
|
|
AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv unsetenv dl_iterate_phdr memmem)
|
|
AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes)
|
|
AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes)
|
|
|
|
AC_CHECK_FUNCS(accept4 dup3 epoll_create1 faccessat fallocate fchmodat fchownat futimesat getxattr inotify_add_watch inotify_init inotify_init1 inotify_rm_watch listxattr mkdirat mknodat open64 openat pipe2 removexattr renameat setxattr sync_file_range splice syscall tee unlinkat unshare utimensat)
|
|
AC_TYPE_OFF_T
|
|
AC_CHECK_TYPES([loff_t])
|
|
|
|
LIBS_hold="$LIBS"
|
|
LIBS="$LIBS -lm"
|
|
AC_CHECK_FUNCS(cosl expl logl sinl tanl acosl asinl atanl atan2l expm1l ldexpl log10l log1pl)
|
|
LIBS="$LIBS_hold"
|
|
|
|
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"
|
|
|
|
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([AC_LANG_SOURCE([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 so that we can use the builtin 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([AC_LANG_SOURCE([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"
|
|
fi
|
|
MATH_FLAG="${MATH_FLAG} -ffp-contract=off -fno-math-errno -fno-trapping-math"
|
|
AC_SUBST(MATH_FLAG)
|
|
|
|
CFLAGS_hold=$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 Check if <sys/stat.h> uses timespec_t for st_?tim members. Introduced
|
|
dnl in Solaris 11.4 for XPG7 compatibility.
|
|
AC_EGREP_HEADER([timespec_t.*st_atim], [sys/stat.h],
|
|
[have_stat_timespec=yes], [have_stat_timespec=no])
|
|
AM_CONDITIONAL(HAVE_STAT_TIMESPEC, test $have_stat_timespec = yes)
|
|
|
|
dnl See if struct exception is defined in <math.h>.
|
|
AC_CHECK_TYPE([struct exception],
|
|
[libgo_has_struct_exception=yes],
|
|
[libgo_has_struct_exception=no],
|
|
[#include <math.h>])
|
|
if test "$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;
|
|
#ifdef MAKECONTEXT_STACK_TOP
|
|
c.uc_stack.ss_sp += sizeof stack;
|
|
#endif
|
|
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_CHECK([whether .eh_frame section should be read-only],
|
|
libgo_cv_ro_eh_frame, [
|
|
libgo_cv_ro_eh_frame=no
|
|
echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
|
|
if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
|
|
if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
|
|
libgo_cv_ro_eh_frame=yes
|
|
elif grep '.section.*eh_frame.*#alloc' conftest.c \
|
|
| grep -v '#write' > /dev/null; then
|
|
libgo_cv_ro_eh_frame=yes
|
|
fi
|
|
fi
|
|
rm -f conftest.*
|
|
])
|
|
if test "x$libgo_cv_ro_eh_frame" = xyes; then
|
|
AC_DEFINE(EH_FRAME_FLAGS, "a",
|
|
[Define to the flags needed for the .section .eh_frame directive.])
|
|
else
|
|
AC_DEFINE(EH_FRAME_FLAGS, "aw",
|
|
[Define to the flags needed for the .section .eh_frame directive.])
|
|
fi
|
|
|
|
AC_CACHE_CHECK([if compiler supports -Qunused-arguments],
|
|
[libgo_cv_c_unused_arguments],
|
|
[CFLAGS_hold=$CFLAGS
|
|
CFLAGS="$CFLAGS -Qunused-arguments"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])],
|
|
[libgo_cv_c_unused_arguments=yes],
|
|
[libgo_cv_c_unused_arguments=no])
|
|
CFLAGS=$CFLAGS_hold])
|
|
|
|
AC_CACHE_CHECK([if assembler supports GNU comdat group syntax],
|
|
libgo_cv_as_comdat_gnu, [
|
|
echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s
|
|
CFLAGS_hold=$CFLAGS
|
|
if test "$libgo_cv_c_unused_arguments" = yes; then
|
|
CFLAGS="$CFLAGS -Qunused-arguments"
|
|
fi
|
|
if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
|
|
libgo_cv_as_comdat_gnu=yes
|
|
else
|
|
libgo_cv_as_comdat_gnu=no
|
|
fi
|
|
CFLAGS=$CFLAGS_hold
|
|
])
|
|
if test "x$libgo_cv_as_comdat_gnu" = xyes; then
|
|
AC_DEFINE(HAVE_AS_COMDAT_GAS, 1,
|
|
[Define if your assembler supports GNU comdat group syntax.])
|
|
fi
|
|
|
|
AC_CACHE_CHECK([assembler supports pc related relocs],
|
|
libgo_cv_as_x86_pcrel, [
|
|
libgo_cv_as_x86_pcrel=yes
|
|
echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
|
|
CFLAGS_hold=$CFLAGS
|
|
if test "$libgo_cv_c_unused_arguments" = yes; then
|
|
CFLAGS="$CFLAGS -Qunused-arguments"
|
|
fi
|
|
if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
|
|
libgo_cv_as_x86_pcrel=no
|
|
fi
|
|
CFLAGS=$CFLAGS_hold
|
|
])
|
|
if test "x$libgo_cv_as_x86_pcrel" = xyes; then
|
|
AC_DEFINE(HAVE_AS_X86_PCREL, 1,
|
|
[Define if your assembler supports PC relative relocs.])
|
|
fi
|
|
|
|
AC_CACHE_CHECK([assembler supports unwind section type],
|
|
libgo_cv_as_x86_64_unwind_section_type, [
|
|
libgo_cv_as_x86_64_unwind_section_type=yes
|
|
echo '.section .eh_frame,"a",@unwind' > conftest.s
|
|
CFLAGS_hold=$CFLAGS
|
|
if test "$libgo_cv_c_unused_arguments" = yes; then
|
|
CFLAGS="$CFLAGS -Qunused-arguments"
|
|
fi
|
|
if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
|
|
libgo_cv_as_x86_64_unwind_section_type=no
|
|
fi
|
|
CFLAGS=$CFLAGS_hold
|
|
])
|
|
if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then
|
|
AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
|
|
[Define if your assembler supports unwind section type.])
|
|
fi
|
|
|
|
AC_CACHE_CHECK([assembler supports AES instructions],
|
|
libgo_cv_as_x86_aes, [
|
|
libgo_cv_as_x86_aes=yes
|
|
echo 'aesenc %xmm0, %xmm1' > conftest.s
|
|
CFLAGS_hold=$CFLAGS
|
|
if test "$libgo_cv_c_unused_arguments" = yes; then
|
|
CFLAGS="$CFLAGS -Qunused-arguments"
|
|
fi
|
|
if $CC $CFLAGS -c conftest.s 2>&1 | grep -i error > /dev/null; then
|
|
libgo_cv_as_x86_aes=no
|
|
fi
|
|
CFLAGS=$CFLAGS_hold
|
|
])
|
|
if test "x$libgo_cv_as_x86_aes" = xyes; then
|
|
AC_DEFINE(HAVE_AS_X86_AES, 1,
|
|
[Define if your assembler supports AES instructions.])
|
|
fi
|
|
|
|
dnl Test whether the linker supports the -static option.
|
|
AC_CACHE_CHECK([whether -static is supported],
|
|
[libgo_cv_ld_static],
|
|
[LDFLAGS_hold=$LDFLAGS
|
|
LDFLAGS="$LDFLAGS -static"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM(,)],
|
|
[libgo_cv_ld_static=yes],
|
|
[libgo_cv_ld_static=no])
|
|
LDFLAGS=$LDFLAGS_hold])
|
|
AM_CONDITIONAL(HAVE_STATIC_LINK, test "$libgo_cv_ld_static" = yes)
|
|
|
|
AC_CACHE_SAVE
|
|
|
|
if test ${multilib} = yes; then
|
|
multilib_arg="--enable-multilib"
|
|
else
|
|
multilib_arg=
|
|
fi
|
|
|
|
AC_CONFIG_FILES(Makefile testsuite/Makefile testsuite/libgo-test-support.exp)
|
|
|
|
AC_CONFIG_COMMANDS([default],
|
|
[if test -n "$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
|