| # configure.ac -- Go library configure script. |
| |
| # Copyright 2009 The Go Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style |
| # license that can be found in the LICENSE file. |
| |
| # Process this file with autoreconf to produce configure. |
| |
| AC_INIT(package-unused, version-unused,, libgo) |
| AC_CONFIG_SRCDIR(Makefile.am) |
| AC_CONFIG_HEADER(config.h) |
| |
| libtool_VERSION=21:0:0 |
| AC_SUBST(libtool_VERSION) |
| |
| AM_ENABLE_MULTILIB(, ..) |
| |
| AC_CANONICAL_SYSTEM |
| target_alias=${target_alias-$host_alias} |
| |
| AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dist subdir-objects -Wall -Wno-portability -Wno-override]) |
| AH_TEMPLATE(PACKAGE, [Name of package]) |
| AH_TEMPLATE(VERSION, [Version number of package]) |
| |
| m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS]) |
| m4_define([_AC_ARG_VAR_PRECIOUS],[]) |
| AC_PROG_CC |
| AC_PROG_GO |
| AM_PROG_AS |
| m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
| |
| AC_SUBST(CFLAGS) |
| |
| case ${host} in |
| *-*-aix*) |
| # Check default architecture for FAT library creation |
| if test -z "`$CC -x c -E /dev/null -g3 -o - | grep 64BIT`" ; then |
| AIX_EXTRA_ARCH='64' |
| else |
| AIX_EXTRA_ARCH='32' |
| fi |
| AC_SUBST(AIX_EXTRA_ARCH) |
| ;; |
| esac |
| |
| AM_MAINTAINER_MODE |
| |
| AC_PROG_LD |
| AC_PROG_RANLIB |
| AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy) |
| |
| AC_LIBTOOL_DLOPEN |
| AM_PROG_LIBTOOL |
| AC_SUBST(enable_shared) |
| AC_SUBST(enable_static) |
| |
| CC_FOR_BUILD=${CC_FOR_BUILD:-gcc} |
| AC_SUBST(CC_FOR_BUILD) |
| |
| AC_PROG_AWK |
| |
| WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' |
| AC_SUBST(WARN_FLAGS) |
| |
| AC_ARG_ENABLE([werror], |
| [AS_HELP_STRING([--disable-werror], [disable building with -Werror])]) |
| AS_IF([test "x$enable_werror" != "xno" && test "x$GCC" = "xyes"], |
| [WERROR="-Werror"]) |
| AC_SUBST(WERROR) |
| |
| glibgo_toolexecdir=no |
| glibgo_toolexeclibdir=no |
| |
| AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
| AC_ARG_ENABLE([version-specific-runtime-libs], |
| AC_HELP_STRING([--enable-version-specific-runtime-libs], |
| [Specify that runtime libraries should be installed in a compiler-specific directory]), |
| [case "$enableval" in |
| yes) version_specific_libs=yes ;; |
| no) version_specific_libs=no ;; |
| *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; |
| esac], |
| [version_specific_libs=no]) |
| AC_MSG_RESULT($version_specific_libs) |
| |
| GCC_WITH_TOOLEXECLIBDIR |
| |
| # Version-specific runtime libs processing. |
| if test $version_specific_libs = yes; then |
| glibgo_toolexecdir='${libdir}/gcc/${host_alias}' |
| glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' |
| fi |
| |
| # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir |
| # Install a library built with a cross compiler in tooldir, not libdir. |
| if test -n "$with_cross_host" && |
| test x"$with_cross_host" != x"no"; then |
| nover_glibgo_toolexecdir='${exec_prefix}/${host_alias}' |
| case ${with_toolexeclibdir} in |
| no) |
| nover_glibgo_toolexeclibdir='${toolexecdir}/lib' |
| ;; |
| *) |
| nover_glibgo_toolexeclibdir=${with_toolexeclibdir} |
| ;; |
| esac |
| else |
| nover_glibgo_toolexecdir='${libdir}/gcc/${host_alias}' |
| nover_glibgo_toolexeclibdir='${libdir}' |
| fi |
| multi_os_directory=`$GOC -print-multi-os-directory` |
| case $multi_os_directory in |
| .) ;; # Avoid trailing /. |
| *) nover_glibgo_toolexeclibdir=${nover_glibgo_toolexeclibdir}/${multi_os_directory} ;; |
| esac |
| |
| if test x"$glibgo_toolexecdir" = x"no"; then |
| glibgo_toolexecdir="${nover_glibgo_toolexecdir}" |
| glibgo_toolexeclibdir="${nover_glibgo_toolexeclibdir}" |
| fi |
| |
| AC_SUBST(glibgo_toolexecdir) |
| AC_SUBST(glibgo_toolexeclibdir) |
| AC_SUBST(nover_glibgo_toolexeclibdir) |
| |
| # See if the user wants to configure without libffi. Some |
| # architectures don't support it. FIXME: We should set a default |
| # based on the host. |
| AC_ARG_WITH(libffi, |
| AS_HELP_STRING([--without-libffi], |
| [don't use libffi]), |
| [:], |
| [with_libffi=${with_libffi_default-yes}]) |
| |
| LIBFFI= |
| LIBFFIINCS= |
| if test "$with_libffi" != no; then |
| AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.]) |
| LIBFFI=../libffi/libffi_convenience.la |
| LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include' |
| fi |
| AC_SUBST(LIBFFI) |
| AC_SUBST(LIBFFIINCS) |
| AM_CONDITIONAL(USE_LIBFFI, test "$with_libffi" != "no") |
| |
| # See if the user wants to configure without libatomic. This is useful if we are |
| # on an architecture for which libgo does not need an atomic support library and |
| # libatomic does not support our C compiler. |
| AC_ARG_WITH(libatomic, |
| AS_HELP_STRING([--without-libatomic], |
| [don't use libatomic]), |
| [:], |
| [with_libatomic=${with_libatomic_default-yes}]) |
| |
| LIBATOMIC= |
| if test "$with_libatomic" != no; then |
| LIBATOMIC=../libatomic/libatomic_convenience.la |
| fi |
| AC_SUBST(LIBATOMIC) |
| |
| # Used to tell GNU make to include a file without telling automake to |
| # include it. |
| go_include="-include" |
| AC_SUBST(go_include) |
| |
| # All known GOOS values. This is the union of all operating systems |
| # supported by the gofrontend and all operating systems supported by |
| # the gc toolchain. |
| ALLGOOS="aix android darwin dragonfly freebsd hurd illumos ios irix js linux netbsd openbsd plan9 rtems solaris windows zos" |
| |
| is_darwin=no |
| is_freebsd=no |
| is_irix=no |
| is_linux=no |
| is_netbsd=no |
| is_openbsd=no |
| is_dragonfly=no |
| is_rtems=no |
| is_solaris=no |
| is_aix=no |
| is_hurd=no |
| GOOS=unknown |
| case ${host} in |
| *-*-darwin*) is_darwin=yes; GOOS=darwin ;; |
| *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;; |
| *-*-irix6*) is_irix=yes; GOOS=irix ;; |
| *-*-linux*) is_linux=yes; GOOS=linux ;; |
| *-*-netbsd*) is_netbsd=yes; GOOS=netbsd ;; |
| *-*-openbsd*) is_openbsd=yes; GOOS=openbsd ;; |
| *-*-dragonfly*) is_dragonfly=yes; GOOS=dragonfly ;; |
| *-*-rtems*) is_rtems=yes; GOOS=rtems ;; |
| *-*-solaris2*) is_solaris=yes; GOOS=solaris ;; |
| *-*-aix*) is_aix=yes; GOOS=aix ;; |
| *-*-gnu*) is_hurd=yes; GOOS=hurd ;; |
| esac |
| AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes) |
| AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes) |
| AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes) |
| AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes) |
| AM_CONDITIONAL(LIBGO_IS_NETBSD, test $is_netbsd = yes) |
| AM_CONDITIONAL(LIBGO_IS_OPENBSD, test $is_openbsd = yes) |
| AM_CONDITIONAL(LIBGO_IS_DRAGONFLY, test $is_dragonfly = yes) |
| AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes) |
| AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes) |
| AM_CONDITIONAL(LIBGO_IS_AIX, test $is_aix = yes) |
| AM_CONDITIONAL(LIBGO_IS_HURD, test $is_hurd = yes) |
| 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) |
| AC_SUBST(GOOS) |
| AC_SUBST(ALLGOOS) |
| |
| dnl Test whether we need to use DejaGNU or whether we can use the |
| dnl simpler gotest approach. We can only use gotest for a native |
| dnl build. |
| USE_DEJAGNU=no |
| case ${host} in |
| *-*-rtems*) USE_DEJAGNU=yes ;; |
| ${build}) ;; |
| *) USE_DEJAGNU=yes ;; |
| esac |
| AC_SUBST(USE_DEJAGNU) |
| |
| # All known GOARCH values. This is the union of all architectures |
| # supported by the gofrontend and all architectures supported by the |
| # gc toolchain. |
| # To add a new architecture: |
| # - add it to this list |
| # - if appropriate, add an entry to ALLGOARCHFAMILY below |
| # - add an entry to the case on ${host} below to set GOARCH |
| # - update goarchList in libgo/go/go/build/syslist.go |
| # - update goarch.sh to report the values for this architecture |
| # - update go-set-goarch in gcc/testsuite/go.test/go-test.exp |
| # - update ptrSizeMap and intSizeMap in libgo/go/cmd/cgo/main.go |
| # - update arch lists in libgo/match.sh |
| # - update arch lists in libgo/testsuite/gotest |
| # - update +build lines in several places |
| # - libgo/go/runtime/lfstack_NNbit.go |
| # - libgo/go/runtime/hashNN.go |
| # - libgo/go/runtime/unalignedN.go |
| # - libgo/go/syscall/endian_XX.go |
| # - possibly others |
| # - possibly update files in libgo/go/internal/syscall/unix |
| 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" |
| |
| # All known GOARCH family values. |
| ALLGOARCHFAMILY="I386 ALPHA AMD64 ARM ARM64 IA64 M68K MIPS MIPS64 NIOS2 PPC PPC64 RISCV RISCV64 S390 S390X SH SPARC SPARC64 WASM" |
| |
| GOARCH=unknown |
| case ${host} in |
| alpha*-*-*) |
| GOARCH=alpha |
| ;; |
| aarch64-*-*) |
| GOARCH=arm64 |
| ;; |
| aarch64_be-*-*) |
| GOARCH=arm64be |
| ;; |
| arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*) |
| GOARCH=arm |
| case ${host} in |
| arm*b*-*-*) |
| GOARCH=armbe |
| ;; |
| esac |
| ;; |
| changequote(,)dnl |
| i[34567]86-*-* | x86_64-*-*) |
| changequote([,])dnl |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #ifdef __x86_64__ |
| #error 64-bit |
| #endif |
| ])], |
| [GOARCH=386], |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #ifdef __ILP32__ |
| #error x32 |
| #endif |
| ])], |
| [GOARCH=amd64], |
| [GOARCH=amd64p32])) |
| ;; |
| ia64-*-*) |
| GOARCH=ia64 |
| ;; |
| m68k*-*-*) |
| GOARCH=m68k |
| ;; |
| mips*-*-*) |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if _MIPS_SIM != _ABIO32 |
| #error not o32 |
| #endif |
| ])], |
| [mips_abi="o32"], |
| [AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if _MIPS_SIM != _ABIN32 |
| #error not n32 |
| #endif |
| ])], |
| [mips_abi="n32"], |
| [AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if _MIPS_SIM != _ABI64 |
| #error not n64 |
| #endif |
| ])], |
| [mips_abi="n64"], |
| [AC_MSG_ERROR([unknown MIPS ABI]) |
| [mips_abi="n32"]])])]) |
| case "$mips_abi" in |
| "o32") GOARCH=mips ;; |
| "n32") GOARCH=mips64p32 ;; |
| "n64") GOARCH=mips64 ;; |
| esac |
| case "${host}" in |
| mips*el-*-*) |
| GOARCH="${GOARCH}le" |
| ;; |
| esac |
| ;; |
| nios2-*-*) |
| GOARCH=nios2 |
| ;; |
| rs6000*-*-* | powerpc*-*-*) |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #ifdef _ARCH_PPC64 |
| #error 64-bit |
| #endif |
| ])], |
| [GOARCH=ppc], |
| [ |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__) |
| #error 64be |
| #endif |
| ])], |
| [GOARCH=ppc64le], |
| [GOARCH=ppc64])]) |
| ;; |
| riscv*-*-*) |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if __riscv_xlen == 64 |
| #error 64-bit |
| #endif |
| ])], |
| [GOARCH=riscv], |
| [GOARCH=riscv64]) |
| ;; |
| s390*-*-*) |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if defined(__s390x__) |
| #error 64-bit |
| #endif |
| ])], |
| [GOARCH=s390], |
| [GOARCH=s390x]) |
| ;; |
| sh3eb*-*-* | sh4eb*-*-*) |
| GOARCH=shbe |
| ;; |
| sh3*-*-* | sh4*-*-*) |
| GOARCH=sh |
| ;; |
| sparc*-*-*) |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if defined(__sparcv9) || defined(__arch64__) |
| #error 64-bit |
| #endif |
| ])], |
| [GOARCH=sparc], |
| [GOARCH=sparc64]) |
| ;; |
| esac |
| AC_SUBST(GOARCH) |
| AC_SUBST(ALLGOARCH) |
| AC_SUBST(ALLGOARCHFAMILY) |
| |
| AM_CONDITIONAL(LIBGO_IS_X86, test "$GOARCH" = "386" -o "$GOARCH" = "amd64" -o "$GOARCH" = "amd64p32") |
| |
| FUNCTION_DESCRIPTORS=false |
| case ${host} in |
| rs6000*-*-* | powerpc*-*-*) |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE([ |
| #if _CALL_ELF == 1 |
| #error descriptors |
| #endif |
| ])], |
| [FUNCTION_DESCRIPTORS=false], |
| [FUNCTION_DESCRIPTORS=true]) |
| ;; |
| esac |
| AC_SUBST(FUNCTION_DESCRIPTORS) |
| |
| dnl Some files are only present when needed for specific architectures. |
| GO_LIBCALL_OS_FILE= |
| GO_LIBCALL_OS_ARCH_FILE= |
| GO_SYSCALL_OS_FILE= |
| GO_SYSCALL_OS_ARCH_FILE= |
| if test -f "${srcdir}/go/syscall/libcall_${GOOS}.go"; then |
| GO_LIBCALL_OS_FILE="go/syscall/libcall_${GOOS}.go" |
| fi |
| if test -f "${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go"; then |
| GO_LIBCALL_OS_ARCH_FILE="go/syscall/libcall_${GOOS}_${GOARCH}.go" |
| fi |
| if test -f "${srcdir}/go/syscall/syscall_${GOOS}.go"; then |
| GO_SYSCALL_OS_FILE="go/syscall/syscall_${GOOS}.go" |
| fi |
| if test -f "${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go"; then |
| GO_SYSCALL_OS_ARCH_FILE="go/syscall/syscall_${GOOS}_${GOARCH}.go" |
| fi |
| AC_SUBST(GO_LIBCALL_OS_FILE) |
| AC_SUBST(GO_LIBCALL_OS_ARCH_FILE) |
| AC_SUBST(GO_SYSCALL_OS_FILE) |
| AC_SUBST(GO_SYSCALL_OS_ARCH_FILE) |
| |
| dnl Special flags used to generate sysinfo.go. |
| OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
| case "$target" in |
| mips-sgi-irix6.5*) |
| # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct |
| # msghdr in <sys/socket.h>. |
| OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500" |
| ;; |
| *-*-solaris2.*) |
| # Solaris 10+ needs this so struct msghdr gets the msg_control |
| # etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as |
| # above doesn't work with C99. |
| OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__" |
| ;; |
| esac |
| AC_SUBST(OSCFLAGS) |
| |
| dnl Check if assembler supports disabling hardware capability support. |
| GCC_CHECK_ASSEMBLER_HWCAP |
| |
| dnl Use -fsplit-stack when compiling C code if available. |
| AC_CACHE_CHECK([whether -fsplit-stack is supported], |
| [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 "$ac_cv_func_wait4" = yes) |
| |
| AC_STRUCT_DIRENT_D_TYPE |
| |
| AC_CHECK_FUNCS(accept4 dup3 epoll_create1 faccessat fallocate fchmodat fchownat futimesat getxattr inotify_add_watch inotify_init inotify_init1 inotify_rm_watch listxattr mkdirat mknodat open64 openat pipe2 removexattr renameat setxattr sync_file_range splice syscall tee unlinkat unshare utimensat) |
| AC_TYPE_OFF_T |
| AC_CHECK_TYPES([loff_t]) |
| |
| LIBS_hold="$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 |