# Process this file with autoconf to generate a configuration script.
# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008 Free Software Foundation, Inc.
+# 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
#This file is part of GCC.
# Initialization and sanity checks
# --------------------------------
-AC_PREREQ(2.59)
+AC_PREREQ(2.64)
AC_INIT
AC_CONFIG_SRCDIR(tree.c)
AC_CONFIG_HEADER(auto-host.h:config.in)
# Find the native compiler
AC_PROG_CC
AM_PROG_CC_C_O
+AC_PROG_CXX
+ACX_PROG_GNAT([-I"$srcdir"/ada])
+
# autoconf is lame and doesn't give us any substitution variable for this.
if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
NO_MINUS_C_MINUS_O=yes
# Check C compiler features
# -------------------------
+AC_USE_SYSTEM_EXTENSIONS
AC_PROG_CPP
AC_C_INLINE
AC_CHECK_SIZEOF(long)
AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
+GCC_STDINT_TYPES
# ---------------------
# Warnings and checking
# * overlong strings
# So, we only use -pedantic if we can disable those warnings.
-ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
- -Wmissing-prototypes], [loose_warn])
-ACX_PROG_CC_WARNING_OPTS([-Wc++-compat], [cxx_compat_warn])
-ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
- -Wmissing-format-attribute], [strict_warn])
-ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
- -Wno-overlength-strings], [strict_warn])
+ACX_PROG_CC_WARNING_OPTS(
+ m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
+ACX_PROG_CC_WARNING_OPTS(
+ m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
+ [c_loose_warn])
+ACX_PROG_CC_WARNING_OPTS(
+ m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
+ACX_PROG_CC_WARNING_OPTS(
+ m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
+ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
+ m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
+ [-Wno-overlength-strings])), [strict_warn])
ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
# The above macros do nothing if the compiler is not GCC. However, the
-# Makefile has more goo to add other flags, so this variabl is used to
-# enables warnings only for GCC.
+# Makefile has more goo to add other flags, so these variables are used
+# to enable warnings only for GCC.
warn_cflags=
+warn_cxxflags=
if test "x$GCC" = "xyes"; then
warn_cflags='$(GCC_WARN_CFLAGS)'
+ warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
fi
AC_SUBST(warn_cflags)
+AC_SUBST(warn_cxxflags)
# Enable expensive internal checks
is_release=
enable expensive run-time checks. With LIST,
enable only specific categories of checks.
Categories are: yes,no,all,none,release.
- Flags are: assert,df,fold,gc,gcac,misc,
+ Flags are: assert,df,fold,gc,gcac,gimple,misc,
rtlflag,rtl,runtime,tree,valgrind,types.],
[ac_checking_flags="${enableval}"],[
# Determine the default checks.
# these set all the flags to specific states
yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking=1 ;
- ac_gc_always_collect= ; ac_rtl_checking= ;
+ ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
ac_tree_checking=1 ; ac_valgrind_checking= ;
ac_types_checking=1 ;;
no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking= ;
- ac_gc_always_collect= ; ac_rtl_checking= ;
+ ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
ac_rtlflag_checking= ; ac_runtime_checking= ;
ac_tree_checking= ; ac_valgrind_checking= ;
ac_types_checking= ;;
all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
ac_fold_checking=1 ; ac_gc_checking=1 ;
- ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
+ ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
ac_tree_checking=1 ; ac_valgrind_checking= ;
ac_types_checking=1 ;;
release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking= ;
- ac_gc_always_collect= ; ac_rtl_checking= ;
+ ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
ac_rtlflag_checking= ; ac_runtime_checking=1 ;
ac_tree_checking= ; ac_valgrind_checking= ;
ac_types_checking= ;;
fold) ac_fold_checking=1 ;;
gc) ac_gc_checking=1 ;;
gcac) ac_gc_always_collect=1 ;;
+ gimple) ac_gimple_checking=1 ;;
misc) ac_checking=1 ;;
rtl) ac_rtl_checking=1 ;;
rtlflag) ac_rtlflag_checking=1 ;;
AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
[Define if you want assertions enabled. This is a cheap check.])
fi
+if test x$ac_gimple_checking != x ; then
+ AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
+[Define if you want operations on GIMPLE (the basic data structure of
+the high-level optimizers) to be checked for dynamic type safety at
+runtime. This is moderately expensive.])
+fi
GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
if test x$ac_runtime_checking != x ; then
AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
# Miscenalleous configure options
# -------------------------------
+# See if we are building gcc with C++.
+AC_ARG_ENABLE(build-with-cxx,
+[ --enable-build-with-cxx build with C++ compiler instead of C compiler],
+ENABLE_BUILD_WITH_CXX=$enableval,
+ENABLE_BUILD_WITH_CXX=no)
+AC_SUBST(ENABLE_BUILD_WITH_CXX)
+
# With stabs
AC_ARG_WITH(stabs,
[ --with-stabs arrange to use stabs instead of host debug format],
AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
+AC_ARG_WITH(specs,
+ [AS_HELP_STRING([--with-specs=SPECS],
+ [add SPECS to driver command-line processing])],
+ [CONFIGURE_SPECS=$withval],
+ [CONFIGURE_SPECS=]
+)
+AC_SUBST(CONFIGURE_SPECS)
+
# Build with intermodule optimisations
AC_ARG_ENABLE(intermodule,
[ --enable-intermodule build the compiler in one step],
esac],
[enable_languages=c])
-# Used by documentation targets
-AC_SUBST(datarootdir)
-AC_SUBST(docdir)
-AC_SUBST(htmldir)
+AC_ARG_WITH(multilib-list,
+[ --with-multilib-list Select multilibs (SH only)],
+:,
+with_multilib_list=default)
# -------------------------
# Checks for other programs
# that we can use it.
ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
[GNU texinfo.* \([0-9][0-9.]*\)],
- [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
+ [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
if test $gcc_cv_prog_makeinfo_modern = no; then
AC_MSG_WARN([
*** Makeinfo is missing or too old.
# Checks for C headers
# --------------------
-AC_MSG_CHECKING(for GNU C library)
-AC_CACHE_VAL(gcc_cv_glibc,
-[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
- [[#include <features.h>]], [[
-#if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
-#error Not a GNU C library system
-#endif]])],
- [gcc_cv_glibc=yes],
- [gcc_cv_glibc=no])])
-AC_MSG_RESULT($gcc_cv_glibc)
-if test $gcc_cv_glibc = yes; then
- AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
-fi
-
# Need to reject headers which give warnings, so that the -Werror bootstrap
# works later. *sigh* This needs to come before all header checks.
AC_PROG_CPP_WERROR
fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
putchar_unlocked putc_unlocked)
AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
- sysconf strsignal getrusage nl_langinfo scandir alphasort \
+ sysconf strsignal getrusage nl_langinfo \
gettimeofday mbstowcs wcswidth mmap mincore setlocale \
gcc_UNLOCKED_FUNCS)
fi
AC_CHECK_TYPE(ssize_t, int)
-
-# Try to determine the array type of the second argument of getgroups
-# for the target system (int or gid_t).
-AC_TYPE_GETGROUPS
-if test "${target}" = "${build}"; then
- TARGET_GETGROUPS_T=$ac_cv_type_getgroups
-else
- case "${target}" in
- # This condition may need some tweaking. It should include all
- # targets where the array type of the second argument of getgroups
- # is int and the type of gid_t is not equivalent to int.
- *-*-sunos* | *-*-ultrix*)
- TARGET_GETGROUPS_T=int
- ;;
- *)
- TARGET_GETGROUPS_T=gid_t
- ;;
- esac
-fi
-AC_SUBST(TARGET_GETGROUPS_T)
+AC_CHECK_TYPE(caddr_t, char *)
gcc_AC_FUNC_MMAP_BLACKLIST
#include <sys/resource.h>
#endif
]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
-[Define to \`long' if <sys/resource.h> doesn't define.])])
+[Define to `long' if <sys/resource.h> doesn't define.])])
# On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
# FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
# For platforms with the unwind ABI which includes an unwind library,
# libunwind, we can choose to use the system libunwind.
-AC_ARG_WITH(system-libunwind,
-[ --with-system-libunwind use installed libunwind])
-
# config.gcc also contains tests of with_system_libunwind.
-if test x$with_system_libunwind = xyes; then
- AC_DEFINE(HAVE_GETIPINFO, 1,
-[Define to 1 if system unwind library has _Unwind_GetIPInfo.])
-fi
+GCC_CHECK_UNWIND_GETIPINFO
# --------------------------------------------------------
# Build, host, and target specific configuration fragments
# Make gthr-default.h if we have a thread file.
gthread_flags=
if test $thread_file != single; then
- rm -f gthr-default.h
- echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
+ echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
+ if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
+ rm -f gthr-default.h-t
+ else
+ mv -f gthr-default.h-t gthr-default.h
+ fi
gthread_flags=-DHAVE_GTHR_DEFAULT
fi
AC_SUBST(gthread_flags)
fi
fi
-use_getipinfo=yes
-if test x$with_system_libunwind = xyes; then
- if test x$host = x$target; then
- AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
- fi
-fi
-GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
-if test x$use_getipinfo = xyes; then
- AC_DEFINE(HAVE_GETIPINFO, 1,
- [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
-else
- echo "The system unwind library does not support _Unwind_GetIPInfo."
-fi
-
# Look for a file containing extra machine modes.
if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
extra_modes_file='$(srcdir)'/config/${extra_modes}
esac
saved_CFLAGS="${CFLAGS}"
CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
+ LDFLAGS="${LDFLAGS_FOR_BUILD}" \
${realsrcdir}/configure \
--enable-languages=${enable_languages-all} \
--target=$target_alias --host=$build_alias --build=$build_alias
EOF
changequote([,])dnl
+changequote(,)dnl
+gcc_BASEVER=`cat $srcdir/BASE-VER`
+gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
+gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
+if test -f $srcdir/REVISION ; then
+ gcc_REVISION=`cat $srcdir/REVISION`
+else
+ gcc_REVISION=""
+fi
+cat > plugin-version.h <<EOF
+#include "configargs.h"
+
+static char basever[] = "$gcc_BASEVER";
+static char datestamp[] = "$gcc_DATESTAMP";
+static char devphase[] = "$gcc_DEVPHASE";
+static char revision[] = "$gcc_REVISION";
+
+/* FIXME plugins: We should make the version information more precise.
+ One way to do is to add a checksum. */
+
+static struct plugin_gcc_version gcc_version = {basever, datestamp,
+ devphase, revision,
+ configuration_arguments};
+EOF
+changequote([,])dnl
+
# Internationalization
ZW_GNU_GETTEXT_SISTER_DIR
[ --enable-secureplt enable -msecure-plt by default for PowerPC],
[], [])
+AC_ARG_ENABLE(cld,
+[ --enable-cld enable -mcld by default for 32bit x86], [],
+[enable_cld=no])
+
# Windows32 Registry support for specifying GCC installation paths.
AC_ARG_ENABLE(win32-registry,
[ --disable-win32-registry
done
tmake_file="${tmake_file_}"
-# This is a terrible hack which will go away some day.
-host_cc_for_libada=${CC}
-AC_SUBST(host_cc_for_libada)
-
out_object_file=`basename $out_file .c`.o
tm_file_list="options.h"
# then define inhibit_libc in LIBGCC2_CFLAGS.
# This prevents libgcc2 from containing any code which requires libc
# support.
-inhibit_libc=false
+: ${inhibit_libc=false}
if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
test x$with_newlib = xyes ; } &&
{ test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
# When building gcc with a cross-compiler, we need to adjust things so
# that the generator programs are still built with the native compiler.
-# Also, we cannot run fixincludes or fix-header.
+# Also, we cannot run fixincludes.
# These are the normal (build=host) settings:
CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
+BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
-# Possibly disable fixproto, on a per-target basis.
-case ${use_fixproto} in
- no)
- STMP_FIXPROTO=
- ;;
- yes)
- STMP_FIXPROTO=stmp-fixproto
- ;;
-esac
-AC_SUBST(STMP_FIXPROTO)
-
# And these apply if build != host, or we are generating coverage data
if test x$build != x$host || test "x$coverage_flags" != x
then
BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
-
- if test "x$TARGET_SYSTEM_ROOT" = x; then
- if test "x$STMP_FIXPROTO" != x; then
- STMP_FIXPROTO=stmp-install-fixproto
- fi
- fi
+ BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
fi
# Expand extra_headers to include complete path.
# Assembler & linker features
# ---------------------------
+# During stage 2, ld is actually gcc/collect-ld, which is a small script to
+# discern between when to use prev-ld/ld-new and when to use ld/ld-new.
+# However when ld-new is first executed from the build tree, libtool will
+# relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
+# to the build tree. While doing this we need to use the previous-stage
+# linker, or we have an infinite loop. The presence of a shell script as
+# ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
+# the gcc/collect-ld script. So we need to know how libtool works, or
+# exec-tool will fail.
+
+m4_defun([_LT_CONFIG_COMMANDS], [])
+AC_PROG_LIBTOOL
+AC_SUBST(objdir)
+AC_SUBST(enable_fast_install)
+
# Identify the assembler which will work hand-in-glove with the newly
# built GCC, so that we can examine its features. This is the assembler
# which will be driven by the driver program.
AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
fi])
+ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
+PLUGIN_LD=`basename $gcc_cv_ld`
+AC_ARG_WITH(plugin-ld,
+[ --with-plugin-ld=[[ARG]] specify the plugin linker],
+[if test x"$withval" != x; then
+ ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
+ PLUGIN_LD="$withval"
+ fi])
+AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
+AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
+
ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
AC_SUBST(ORIGINAL_LD_FOR_TARGET)
case "$ORIGINAL_LD_FOR_TARGET" in
AC_MSG_RESULT($gcc_cv_objdump)
fi
+# Figure out what readelf we will be using.
+AS_VAR_SET_IF(gcc_cv_readelf,, [
+if test -f $gcc_cv_binutils_srcdir/configure.in \
+ && test -f ../binutils/Makefile \
+ && test x$build = x$host; then
+ # Single tree build which includes binutils.
+ gcc_cv_readelf=../binutils/readelf$build_exeext
+elif test -x readelf$build_exeext; then
+ gcc_cv_readelf=./readelf$build_exeext
+else
+ AC_PATH_PROG(gcc_cv_readelf, readelf)
+fi])
+
+AC_MSG_CHECKING(what readelf to use)
+if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
+ # Single tree build which includes binutils.
+ AC_MSG_RESULT(newly built readelf)
+elif test x$gcc_cv_readelf = x; then
+ AC_MSG_RESULT(not found)
+else
+ AC_MSG_RESULT($gcc_cv_readelf)
+fi
+
# Figure out what assembler alignment features are present.
gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
[2,6,0],,
[ .hidden foobar
foobar:])
+changequote(,)dnl
+if test $in_tree_ld != yes ; then
+ ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
+ if echo "$ld_ver" | grep GNU > /dev/null; then
+ ld_vers=`echo $ld_ver | sed -n \
+ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
+ ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
+ ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
+ ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
+ ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
+ fi
+fi
+changequote([,])dnl
+
AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
-[if test $in_tree_ld = yes ; then
+[[if test $in_tree_ld = yes ; then
gcc_cv_ld_hidden=no
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
fi
else
gcc_cv_ld_hidden=yes
- ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
if echo "$ld_ver" | grep GNU > /dev/null; then
-changequote(,)dnl
- ld_vers=`echo $ld_ver | sed -n \
- -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
- ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
- ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
- ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
- ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
if test 0"$ld_date" -lt 20020404; then
if test -n "$ld_date"; then
# If there was date string, but was earlier than 2002-04-04, fail
gcc_cv_ld_hidden=no
fi
fi
-changequote([,])dnl
fi
else
case "${target}" in
hppa64*-*-hpux* | ia64*-*-hpux*)
gcc_cv_ld_hidden=yes
;;
+ *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
+ gcc_cv_ld_hidden=yes
+ ;;
*)
gcc_cv_ld_hidden=no
;;
esac
fi
-fi])
+fi]])
libgcc_visibility=no
AC_SUBST(libgcc_visibility)
GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
[Define if your assembler and linker support .hidden.])
fi
+AC_MSG_CHECKING(linker read-only and read-write section mixing)
+gcc_cv_ld_ro_rw_mix=unknown
+if test $in_tree_ld = yes ; then
+ if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
+ && test $in_tree_ld_is_elf = yes; then
+ gcc_cv_ld_ro_rw_mix=read-write
+ fi
+elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
+ echo '.section myfoosect, "a"' > conftest1.s
+ echo '.section myfoosect, "aw"' > conftest2.s
+ echo '.byte 1' >> conftest2.s
+ echo '.section myfoosect, "a"' > conftest3.s
+ echo '.byte 0' >> conftest3.s
+ if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
+ && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
+ && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
+ && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
+ conftest2.o conftest3.o > /dev/null 2>&1; then
+ gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
+ | sed -e '/myfoosect/!d' -e N`
+ if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
+ if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
+ gcc_cv_ld_ro_rw_mix=read-only
+ else
+ gcc_cv_ld_ro_rw_mix=read-write
+ fi
+ fi
+ fi
+changequote(,)dnl
+ rm -f conftest.* conftest[123].*
+changequote([,])dnl
+fi
+if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
+ AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
+ [Define if your linker links a mix of read-only
+ and read-write sections into a read-write section.])
+fi
+AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
+
# Check if we have .[us]leb128, and support symbol arithmetic with it.
gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
[elf,2,11,0],,
.uleb128 1280
.sleb128 -1010
L2:],
- [# GAS versions before 2.11 do not support uleb128,
+[[# GAS versions before 2.11 do not support uleb128,
# despite appearing to.
# ??? There exists an elf-specific test that will crash
# the assembler. Perhaps it's better to figure out whether
# arbitrary sections are supported and try the test.
as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
if echo "$as_ver" | grep GNU > /dev/null; then
-changequote(,)dnl
as_vers=`echo $as_ver | sed -n \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
as_major=`expr "$as_vers" : '\([0-9]*\)'`
as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
-changequote([,])dnl
if test $as_major -eq 2 && test $as_minor -lt 11
then :
else gcc_cv_as_leb128=yes
fi
- fi],
+ fi]],
[AC_DEFINE(HAVE_AS_LEB128, 1,
[Define if your assembler supports .sleb128 and .uleb128.])])
+# Check if we have assembler support for unwind directives.
+gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
+ ,,
+[ .text
+ .cfi_startproc
+ .cfi_offset 0, 0
+ .cfi_same_value 1
+ .cfi_def_cfa 1, 2
+ .cfi_escape 1, 2, 3, 4, 5
+ .cfi_endproc],
+[case "$target" in
+ *-*-solaris*)
+ # If the linker used on Solaris (like Sun ld) isn't capable of merging
+ # read-only and read-write sections, we need to make sure that the
+ # assembler used emits read-write .eh_frame sections.
+ if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
+ if test "x$gcc_cv_objdump" != x; then
+ if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
+ sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
+ gcc_cv_as_cfi_directive=no
+ else
+ case "$target" in
+ i?86-*-solaris2.1[[0-9]]*)
+ # On Solaris/x86, make sure that GCC and gas agree on using
+ # read-only .eh_frame sections for 64-bit.
+ if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
+ $gcc_cv_objdump -h conftest.o 2>/dev/null | \
+ sed -e /.eh_frame/!d -e N | \
+ grep READONLY > /dev/null; then
+ gcc_cv_as_cfi_directive=yes
+ else
+ gcc_cv_as_cfi_directive=no
+ fi
+ ;;
+ *)
+ gcc_cv_as_cfi_directive=yes
+ ;;
+ esac
+ fi
+ else
+ # no objdump, err on the side of caution
+ gcc_cv_as_cfi_directive=no
+ fi
+ else
+ gcc_cv_as_cfi_directive=yes
+ fi
+ ;;
+ *-*-*)
+ gcc_cv_as_cfi_directive=yes
+ ;;
+esac])
+if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
+gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
+ ,,
+[ .text
+ .cfi_startproc
+ .cfi_adjust_cfa_offset 64
+ .skip 75040, 0
+ .cfi_adjust_cfa_offset 128
+ .cfi_endproc],
+[[
+if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
+ | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
+ gcc_cv_as_cfi_advance_working=yes
+fi
+]])
+else
+ # no readelf, err on the side of caution
+ gcc_cv_as_cfi_advance_working=no
+fi
+AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
+ [`if test $gcc_cv_as_cfi_directive = yes \
+ && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
+ [Define 0/1 if your assembler supports CFI directives.])
+
+gcc_GAS_CHECK_FEATURE([cfi personality directive],
+ gcc_cv_as_cfi_personality_directive, ,,
+[ .text
+ .cfi_startproc
+ .cfi_personality 0, symbol
+ .cfi_endproc])
+AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
+ [`if test $gcc_cv_as_cfi_personality_directive = yes;
+ then echo 1; else echo 0; fi`],
+ [Define 0/1 if your assembler supports .cfi_personality.])
+
+gcc_GAS_CHECK_FEATURE([cfi sections directive],
+ gcc_cv_as_cfi_sections_directive, ,,
+[ .text
+ .cfi_sections .debug_frame, .eh_frame
+ .cfi_startproc
+ .cfi_endproc])
+AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
+ [`if test $gcc_cv_as_cfi_sections_directive = yes;
+ then echo 1; else echo 0; fi`],
+ [Define 0/1 if your assembler supports .cfi_sections.])
+
# GAS versions up to and including 2.11.0 may mis-optimize
# .eh_frame data.
gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
[elf,2,16,0], [--fatal-warnings],
[.section .text,"axG",%progbits,.foo,comdat])
fi
-if test $in_tree_ld != yes && test x"$ld_vers" != x; then
+if test $in_tree_ld = yes ; then
+ comdat_group=no
+ if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
+ && test $in_tree_ld_is_elf = yes; then
+ comdat_group=yes
+ fi
+elif test x"$ld_vers" != x; then
comdat_group=yes
if test 0"$ld_date" -lt 20050308; then
if test -n "$ld_date"; then
[`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler and linker support COMDAT groups.])
-# Thread-local storage - the check is heavily parametrized.
+gcc_GAS_CHECK_FEATURE([line table discriminator support],
+ gcc_cv_as_discriminator,
+ [2,19,51],,
+[ .text
+ .file 1 "conf.c"
+ .loc 1 1 0 discriminator 1],,
+[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
+ [Define if your assembler supports the .loc discriminator sub-directive.])])
+
+# Thread-local storage - the check is heavily parameterized.
conftest_s=
tls_first_major=
tls_first_minor=
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
+ cris-*-*|crisv32-*-*)
+ conftest_s='
+ .section ".tdata","awT",@progbits
+x: .long 25
+ .text
+ move.d x:IE,$r10
+ nop'
+ tls_first_major=2
+ tls_first_minor=20
+ tls_as_opt=--fatal-warnings
+ ;;
frv*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
tls_first_minor=17
;;
i[34567]86-*-*)
- conftest_s='
- .section ".tdata","awT",@progbits
+ case "$target" in
+ i[34567]86-*-solaris2.[56789]*)
+ # TLS was introduced in the Solaris 9 4/04 release but
+ # we do not enable it by default on Solaris 9 either.
+ if test "x$enable_tls" = xyes ; then
+ on_solaris=yes
+ else
+ enable_tls=no;
+ fi
+ ;;
+ i[34567]86-*-solaris2.*)
+ on_solaris=yes
+ ;;
+ *)
+ on_solaris=no
+ ;;
+ esac
+ if test x$on_solaris = xyes && test x$gas_flag = xno; then
+ conftest_s='
+ .section .tdata,"awt",@progbits'
+ tls_first_major=0
+ tls_first_minor=0
+changequote([,])dnl
+ AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
+[Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
+changequote(,)dnl
+ else
+ conftest_s='
+ .section ".tdata","awT",@progbits'
+ tls_first_major=2
+ tls_first_minor=14
+ tls_as_opt="--fatal-warnings"
+ fi
+ conftest_s="$conftest_s
foo: .long 25
.text
movl %gs:0, %eax
- leal foo@TLSGD(,%ebx,1), %eax
- leal foo@TLSLDM(%ebx), %eax
- leal foo@DTPOFF(%eax), %edx
- movl foo@GOTTPOFF(%ebx), %eax
- subl foo@GOTTPOFF(%ebx), %eax
- addl foo@GOTNTPOFF(%ebx), %eax
- movl foo@INDNTPOFF, %eax
- movl $foo@TPOFF, %eax
- subl $foo@TPOFF, %eax
- leal foo@NTPOFF(%ecx), %eax'
- tls_first_major=2
- tls_first_minor=14
- tls_as_opt=--fatal-warnings
- ;;
+ leal foo@tlsgd(,%ebx,1), %eax
+ leal foo@tlsldm(%ebx), %eax
+ leal foo@dtpoff(%eax), %edx
+ movl foo@gottpoff(%ebx), %eax
+ subl foo@gottpoff(%ebx), %eax
+ addl foo@gotntpoff(%ebx), %eax
+ movl foo@indntpoff, %eax
+ movl \$foo@tpoff, %eax
+ subl \$foo@tpoff, %eax
+ leal foo@ntpoff(%ecx), %eax"
+ ;;
x86_64-*-*)
conftest_s='
.section ".tdata","awT",@progbits
tls_first_minor=16
tls_as_opt='-32 --fatal-warnings'
;;
+ m68k-*-*)
+ conftest_s='
+ .section .tdata,"awT",@progbits
+x:
+ .word 2
+ .text
+foo:
+ move.l x@TLSGD(%a5),%a0
+ move.l x@TLSLDM(%a5),%a0
+ move.l x@TLSLDO(%a5),%a0
+ move.l x@TLSIE(%a5),%a0
+ move.l x@TLSLE(%a5),%a0'
+ tls_first_major=2
+ tls_first_minor=19
+ tls_as_opt='--fatal-warnings'
+ ;;
powerpc-*-*)
conftest_s='
.section ".tdata","awT",@progbits
tls_as_opt="-32 --fatal-warnings"
fi
;;
+ xtensa*-*-*)
+ conftest_s='
+ .section ".tdata","awT",@progbits
+foo: .long 25
+ .text
+ movi a8, foo@TLSFUNC
+ movi a10, foo@TLSARG
+ callx8.tls a8, foo@TLSCALL'
+ tls_first_major=2
+ tls_first_minor=19
+ ;;
changequote([,])dnl
esac
set_have_as_tls=no
AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
gcc_cv_ld_static_dynamic=no
if test $in_tree_ld = yes ; then
- if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
+ if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
gcc_cv_ld_static_dynamic=yes
fi
elif test x$gcc_cv_ld != x; then
[AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
[Define if your assembler supports -relax option.])])
+ gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
+ gcc_cv_as_sparc_gotdata_op,,
+ [-K PIC],
+[.text
+foo:
+ nop
+bar:
+ sethi %gdop_hix22(foo), %g1
+ xor %g1, %gdop_lox10(foo), %g1
+ ld [[%l7 + %g1]], %g2, %gdop(foo)],
+ [if test x$gcc_cv_ld != x \
+ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
+ if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
+ if test x$gcc_cv_objdump != x; then
+ if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
+ | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
+ gcc_cv_as_sparc_gotdata_op=no
+ else
+ gcc_cv_as_sparc_gotdata_op=yes
+ fi
+ fi
+ else
+ gcc_cv_as_sparc_gotdata_op=yes
+ fi
+ fi
+ rm -f conftest],
+ [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
+ [Define if your assembler and linker support GOTDATA_OP relocs.])])
+
gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
gcc_cv_as_sparc_ua_pcrel,,
[-K PIC],
i[34567]86-*-* | x86_64-*-*)
changequote([,])dnl
case $target_os in
+ cygwin*)
+ # Full C++ conformance when using a shared libstdc++-v3 requires some
+ # support from the Cygwin DLL, which in more recent versions exports
+ # wrappers to aid in interposing and redirecting operators new, delete,
+ # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
+ # are configuring for a version of Cygwin that exports the wrappers.
+ if test x$host = x$target; then
+ AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
+ else
+ # Can't check presence of libc functions during cross-compile, so
+ # we just have to assume we're building for an up-to-date target.
+ gcc_ac_cygwin_dll_wrappers=yes
+ fi
+ AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
+ [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
+ [Define if you want to generate code by default that assumes that the
+ Cygwin DLL exports wrappers to support libstdc++ function replacement.])
+ esac
+ case $target_os in
cygwin* | pe | mingw32*)
+ # Recent binutils allows the three-operand form of ".comm" on PE. This
+ # definition is used unconditionally to initialise the default state of
+ # the target option variable that governs usage of the feature.
+ gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
+ [2,19,52],,[.comm foo,1,32])
+ AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
+ [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
+ [Define if your assembler supports specifying the alignment
+ of objects allocated using the GAS .comm command.])
# Used for DWARF 2 in PE
gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
gcc_cv_as_ix86_pe_secrel32,
esac
gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
- gcc_cv_as_ix86_filds_fists,
- [2,9,0],, [filds mem; fists mem],,
- [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
- [Define if your assembler uses the new HImode fild and fist notation.])])
+ gcc_cv_as_ix86_filds,,,
+ [filds mem; fists mem],,
+ [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
+ [Define if your assembler uses filds and fists mnemonics.])])
+
+ gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
+ gcc_cv_as_ix86_fildq,,,
+ [fildq mem; fistpq mem],,
+ [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
+ [Define if your assembler uses fildq and fistq mnemonics.])])
gcc_GAS_CHECK_FEATURE([cmov syntax],
gcc_cv_as_ix86_cmov_sun_syntax,,,
[AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
[Define if your assembler supports the sahf mnemonic.])])
+ gcc_GAS_CHECK_FEATURE([swap suffix],
+ gcc_cv_as_ix86_swap,,,
+ [movl.s %esp, %ebp],,
+ [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
+ [Define if your assembler supports the swap suffix.])])
+
gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
gcc_cv_as_ix86_diff_sect_delta,,,
[.section .rodata
esac
gcc_GAS_CHECK_FEATURE([move fp gpr support],
- gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
+ gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_MFPGPR, 1,
[Define if your assembler supports mffgpr and mftgpr.])])
esac
gcc_GAS_CHECK_FEATURE([compare bytes support],
- gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
+ gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_CMPB, 1,
[Define if your assembler supports cmpb.])])
esac
gcc_GAS_CHECK_FEATURE([decimal float support],
- gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
+ gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_DFP, 1,
[Define if your assembler supports DFP instructions.])])
+ case $target in
+ *-*-aix*) conftest_s=' .machine "pwr7"
+ .csect .text[[PR]]
+ lxvd2x 1,2,3';;
+ *) conftest_s=' .machine power7
+ .text
+ lxvd2x 1,2,3';;
+ esac
+
+ gcc_GAS_CHECK_FEATURE([vector-scalar support],
+ gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
+ [$conftest_s],,
+ [AC_DEFINE(HAVE_AS_VSX, 1,
+ [Define if your assembler supports VSX instructions.])])
+
+ case $target in
+ *-*-aix*) conftest_s=' .machine "pwr7"
+ .csect .text[[PR]]
+ popcntd 3,3';;
+ *) conftest_s=' .machine power7
+ .text
+ popcntd 3,3';;
+ esac
+
+ gcc_GAS_CHECK_FEATURE([popcntd support],
+ gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
+ [$conftest_s],,
+ [AC_DEFINE(HAVE_AS_POPCNTD, 1,
+ [Define if your assembler supports POPCNTD instructions.])])
+
+ case $target in
+ *-*-aix*) conftest_s=' .csect .text[[PR]]
+ lwsync';;
+ *) conftest_s=' .text
+ lwsync';;
+ esac
+
+ gcc_GAS_CHECK_FEATURE([lwsync support],
+ gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
+ [$conftest_s],,
+ [AC_DEFINE(HAVE_AS_LWSYNC, 1,
+ [Define if your assembler supports LWSYNC instructions.])])
+
+ case $target in
+ *-*-aix*) conftest_s=' .machine "476"
+ .csect .text[[PR]]
+ dci 0';;
+ *) conftest_s=' .machine "476"
+ .text
+ dci 0';;
+ esac
+
+ gcc_GAS_CHECK_FEATURE([data cache invalidate support],
+ gcc_cv_as_powerpc_dci, [9,99,0], -a32,
+ [$conftest_s],,
+ [AC_DEFINE(HAVE_AS_DCI, 1,
+ [Define if your assembler supports the DCI/ICI instructions.])])
+
gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
[.gnu_attribute 4,1],,
[AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
[Define if your assembler supports .gnu_attribute.])])
+
+ gcc_GAS_CHECK_FEATURE([tls marker support],
+ gcc_cv_as_powerpc_tls_markers, [2,20,0],,
+ [ bl __tls_get_addr(x@tlsgd)],,
+ [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
+ [Define if your assembler supports arg info for __tls_get_addr.])])
+
+ case $target in
+ *-*-aix*)
+ gcc_GAS_CHECK_FEATURE([.ref support],
+ gcc_cv_as_aix_ref, [2.21.0],,
+ [ .csect stuff[[rw]]
+ stuff:
+ .long 1
+ .extern sym
+ .ref sym
+ ],,
+ [AC_DEFINE(HAVE_AS_REF, 1,
+ [Define if your assembler supports .ref])])
+ ;;
+ esac
;;
mips*-*-*)
.dtprelword x+0x8000],,
[AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
[Define if your assembler supports .dtprelword.])])
+
+ AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
+ gcc_cv_as_ld_jalr_reloc=no
+ if test $gcc_cv_as_mips_explicit_relocs = yes; then
+ if test $in_tree_ld = yes ; then
+ if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
+ && test $in_tree_ld_is_elf = yes; then
+ gcc_cv_as_ld_jalr_reloc=yes
+ fi
+ elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
+ echo ' .ent x' > conftest.s
+ echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
+ echo ' ld $25,%call16(y)($28)' >> conftest.s
+ echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
+ echo '1: jalr $25' >> conftest.s
+ echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
+ echo '1: jalr $25' >> conftest.s
+ echo ' .end x' >> conftest.s
+ if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
+ && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
+ if $gcc_cv_objdump -d conftest.so | grep -q jalr \
+ && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
+ gcc_cv_as_ld_jalr_reloc=yes
+ fi
+ fi
+ rm -f conftest.*
+ fi
+ fi
+ if test $gcc_cv_as_ld_jalr_reloc = yes; then
+ if test x$target_cpu_default = x; then
+ target_cpu_default=MASK_RELAX_PIC_CALLS
+ else
+ target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
+ fi
+ fi
+ AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
+
+ AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
+ [gcc_cv_ld_mips_personality_relaxation],
+ [gcc_cv_ld_mips_personality_relaxation=no
+ if test $in_tree_ld = yes ; then
+ if test "$gcc_cv_gld_major_version" -eq 2 \
+ -a "$gcc_cv_gld_minor_version" -ge 21 \
+ -o "$gcc_cv_gld_major_version" -gt 2; then
+ gcc_cv_ld_mips_personality_relaxation=yes
+ fi
+ elif test x$gcc_cv_as != x \
+ -a x$gcc_cv_ld != x \
+ -a x$gcc_cv_readelf != x ; then
+ cat > conftest.s <<EOF
+ .cfi_startproc
+ .cfi_personality 0x80,indirect_ptr
+ .ent test
+test:
+ nop
+ .end test
+ .cfi_endproc
+
+ .section .data,"aw",@progbits
+indirect_ptr:
+ .dc.a personality
+EOF
+ if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
+ && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
+ if $gcc_cv_readelf -d conftest 2>&1 \
+ | grep TEXTREL > /dev/null 2>&1; then
+ :
+ elif $gcc_cv_readelf --relocs conftest 2>&1 \
+ | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
+ :
+ else
+ gcc_cv_ld_mips_personality_relaxation=yes
+ fi
+ fi
+ fi
+ rm -f conftest.s conftest.o conftest])
+ if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
+ AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
+ [Define if your linker can relax absolute .eh_frame personality
+pointers into PC-relative form.])
+ fi
;;
esac
# version to the per-target configury.
case "$target" in
i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
- | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
- | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
+ | x86_64*-*-* | hppa*-*-* | arm*-*-* \
+ | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
+ | spu-*-* | fido*-*-* | m32c-*-*)
insn="nop"
;;
ia64*-*-* | s390*-*-*)
[Define if your assembler supports the --debug-prefix-map option.])])
fi
+gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
+ ,,
+[.lcomm bar,4,16],,
+[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
+ [Define if your assembler supports .lcomm with an alignment field.])])
+
+AC_ARG_ENABLE(gnu-unique-object,
+ [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
+ glibc systems],
+ [case $enable_gnu_unique_object in
+ yes | no) ;;
+ *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
+Valid choices are 'yes' and 'no'.]) ;;
+ esac],
+ [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
+ [elf,2,19,52],,
+ [.type foo, @gnu_unique_object],,
+# Also check for ld.so support, i.e. glibc 2.11 or higher.
+ [[if test x$host = x$build -a x$host = x$target &&
+ glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
+ glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
+ glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
+ glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
+ if test "$glibcnum" -ge 2011 ; then
+ enable_gnu_unique_object=yes
+ fi
+ fi]])])
+if test x$enable_gnu_unique_object = xyes; then
+ AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
+ [Define if your assembler supports @gnu_unique_object.])
+fi
+
AC_CACHE_CHECK([assembler for tolerance to line number 0],
[gcc_cv_as_line_zero],
[gcc_cv_as_line_zero=no
[Define if the assembler won't complain about a line such as # 0 "" 2.])
fi
-AC_MSG_CHECKING(linker read-only and read-write section mixing)
-gcc_cv_ld_ro_rw_mix=unknown
-if test $in_tree_ld = yes ; then
- if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
- && test $in_tree_ld_is_elf = yes; then
- gcc_cv_ld_ro_rw_mix=read-write
- fi
-elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
- echo '.section myfoosect, "a"' > conftest1.s
- echo '.section myfoosect, "aw"' > conftest2.s
- echo '.byte 1' >> conftest2.s
- echo '.section myfoosect, "a"' > conftest3.s
- echo '.byte 0' >> conftest3.s
- if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
- && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
- && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
- && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
- conftest2.o conftest3.o > /dev/null 2>&1; then
- gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
- | sed -e '/myfoosect/!d' -e N`
- if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
- if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
- gcc_cv_ld_ro_rw_mix=read-only
- else
- gcc_cv_ld_ro_rw_mix=read-write
- fi
- fi
- fi
-changequote(,)dnl
- rm -f conftest.* conftest[123].*
-changequote([,])dnl
-fi
-if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
- AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
- [Define if your linker links a mix of read-only
- and read-write sections into a read-write section.])
-fi
-AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
-
AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
gcc_cv_ld_eh_frame_hdr=no
if test $in_tree_ld = yes ; then
;;
esac
+AC_CACHE_CHECK(linker --build-id support,
+ gcc_cv_ld_buildid,
+ [gcc_cv_ld_buildid=no
+ if test $in_tree_ld = yes ; then
+ if test "$gcc_cv_gld_major_version" -eq 2 -a \
+ "$gcc_cv_gld_minor_version" -ge 18 -o \
+ "$gcc_cv_gld_major_version" -gt 2 \
+ && test $in_tree_ld_is_elf = yes; then
+ gcc_cv_ld_buildid=yes
+ fi
+ elif test x$gcc_cv_ld != x; then
+ if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
+ gcc_cv_ld_buildid=yes
+ fi
+ fi])
+if test x"$gcc_cv_ld_buildid" = xyes; then
+ AC_DEFINE(HAVE_LD_BUILDID, 1,
+ [Define if your linker supports --build-id.])
+fi
+
+AC_ARG_ENABLE(linker-build-id,
+[ --enable-linker-build-id
+ compiler will always pass --build-id to linker],
+[],
+enable_linker_build_id=no)
+
+if test x"$enable_linker_build_id" = xyes; then
+ if test x"$gcc_cv_ld_buildid" = xyes; then
+ AC_DEFINE(ENABLE_LD_BUILDID, 1,
+ [Define if gcc should always pass --build-id to linker.])
+ else
+ AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
+ fi
+fi
+
AC_CACHE_CHECK(linker --sysroot support,
gcc_cv_ld_sysroot,
[gcc_cv_ld_sysroot=no
gcc_cv_libc_provides_ssp,
[gcc_cv_libc_provides_ssp=no
case "$target" in
- *-*-linux*)
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
- if test "x$with_sysroot" = x; then
+ if test "x$with_headers" != x; then
+ glibc_header_dir=$with_headers
+ elif test "x$with_sysroot" = x; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
elif test "x$with_build_sysroot" != "x"; then
glibc_header_dir="${with_build_sysroot}/usr/include"
else
glibc_header_dir=/usr/include
fi
- # glibc 2.4 and later provides __stack_chk_fail and
+ [# glibc 2.4 and later provides __stack_chk_fail and
# either __stack_chk_guard, or TLS access to stack guard canary.
if test -f $glibc_header_dir/features.h \
- && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
+ && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
$glibc_header_dir/features.h > /dev/null; then
- if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
+ if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
$glibc_header_dir/features.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
- elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
+ elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
$glibc_header_dir/features.h > /dev/null \
- && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
+ && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
$glibc_header_dir/features.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
- elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
+ elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
$glibc_header_dir/features.h > /dev/null && \
test -f $glibc_header_dir/bits/uClibc_config.h && \
- $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
+ $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
$glibc_header_dir/bits/uClibc_config.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
fi
- fi
+ fi]
;;
- *-*-darwin*)
+ *-*-gnu*)
+ # Avoid complicated tests (see
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
[echo "no __stack_chk_fail on this target"])
;;
AC_ARG_WITH(long-double-128,
[ --with-long-double-128 Use 128-bit long double by default.],
gcc_cv_target_ldbl128="$with_long_double_128",
- [gcc_cv_target_ldbl128=no
+ [[gcc_cv_target_ldbl128=no
if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
if test "x$with_sysroot" = x; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
else
glibc_header_dir=/usr/include
fi
-changequote(,)dnl
grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
$glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
&& gcc_cv_target_ldbl128=yes
-changequote([,])dnl
- ])
+ ]])
;;
esac
if test x$gcc_cv_target_ldbl128 = xyes; then
AC_SUBST(GGC)
echo "Using $GGC for garbage collection."
+# Libraries to use on the host. This will normally be set by the top
+# level Makefile. Here we simply capture the value for our Makefile.
+if test -z "${HOST_LIBS+set}"; then
+ HOST_LIBS=
+fi
+AC_SUBST(HOST_LIBS)
+
# Use the system's zlib library.
zlibdir=-L../zlib
zlibinc="-I\$(srcdir)/../zlib"
# `language' must be a single word so is spelled singularly.
all_languages=
all_compilers=
-all_outputs='Makefile gccbug libada-mk'
+all_outputs='Makefile gccbug'
# List of language makefile fragments.
all_lang_makefrags=
# List of language subdirectory makefiles. Deprecated.
fi
subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
subdirs="$subdirs $subdir"
+
+ # $gcc_subdir is where the gcc integration files are to be found
+ # for a language, both for internal compiler purposes (compiler
+ # sources implementing front-end to GCC tree converters), and for
+ # build infrastructure purposes (Make-lang.in, etc.)
+ #
+ # This will be <subdir> (relative to $srcdir) if a line like
+ # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
+ # is found in <langdir>/config-lang.in, and will remain <langdir>
+ # otherwise.
+ #
+ # Except for the language alias (fetched above), the regular
+ # "config-lang.in" contents are always retrieved from $gcc_subdir,
+ # so a <langdir>/config-lang.in setting gcc_subdir typically sets
+ # only this and the language alias.
+
+ gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
+ if [ "$gcc_subdir" = "" ]; then
+ gcc_subdir="$subdir"
+ fi
+
case ",$enable_languages," in
*,$lang_alias,*)
all_selected_languages="$all_selected_languages $lang_alias"
- if test -f $srcdir/$subdir/lang-specs.h; then
- lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
+ if test -f $srcdir/$gcc_subdir/lang-specs.h; then
+ lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
fi
;;
esac
outputs=
gtfiles=
subdir_requires=
- . ${srcdir}/$subdir/config-lang.in
+ . ${srcdir}/$gcc_subdir/config-lang.in
if test "x$language" = x
then
- echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
+ echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
exit 1
fi
esac
$ok || continue
- all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
- if test -f $srcdir/$subdir/lang.opt; then
- lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
+ all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
+ if test -f $srcdir/$gcc_subdir/lang.opt; then
+ lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
fi
- if test -f $srcdir/$subdir/$subdir-tree.def; then
- lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
+ if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
+ lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
fi
- if test -f ${srcdir}/$subdir/Makefile.in
- then all_lang_makefiles="$subdir/Makefile"
+ if test -f ${srcdir}/$gcc_subdir/Makefile.in
+ then all_lang_makefiles="$gcc_subdir/Makefile"
fi
all_languages="$all_languages $language"
all_compilers="$all_compilers $compilers"
all_outputs="$all_outputs $outputs"
all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
+ case ",$enable_languages," in
+ *,lto,*)
+ AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
+ enable_lto=yes
+ AC_SUBST(enable_lto)
+ ;;
+ *) ;;
+ esac
done
# Pick up gtfiles for c
rm -f Make-hooks
touch Make-hooks
target_list="all.cross start.encap rest.encap tags \
- install-common install-man install-info install-pdf dvi pdf \
- html uninstall info man srcextra srcman srcinfo \
- mostlyclean clean distclean maintainer-clean"
+ install-common install-man install-info install-pdf install-html dvi \
+ pdf html uninstall info man srcextra srcman srcinfo \
+ mostlyclean clean distclean maintainer-clean install-plugin"
for t in $target_list
do
fi)
AC_SUBST(slibdir)
-objdir=`${PWDCMD-pwd}`
-AC_SUBST(objdir)
-
-AC_ARG_WITH(datarootdir,
-[ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
-datarootdir="\${prefix}/$with_datarootdir",
-datarootdir='$(prefix)/share')
-AC_SUBST(datarootdir)
-
-AC_ARG_WITH(docdir,
-[ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
-docdir="\${prefix}/$with_docdir",
-docdir='$(datarootdir)')
-AC_SUBST(docdir)
-
-AC_ARG_WITH(htmldir,
-[ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
-htmldir="\${prefix}/$with_htmldir",
-htmldir='$(docdir)')
-AC_SUBST(htmldir)
-
# Substitute configuration variables
AC_SUBST(subdirs)
AC_SUBST(srcdir)
AC_SUBST(cpp_install_dir)
AC_SUBST(xmake_file)
AC_SUBST(tmake_file)
+AC_SUBST(TM_ENDIAN_CONFIG)
+AC_SUBST(TM_MULTILIB_CONFIG)
+AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
AC_SUBST(extra_gcc_objs)
AC_SUBST(extra_headers_list)
AC_SUBST(extra_objs)
AC_SUBST(xm_file_list)
AC_SUBST(xm_include_list)
AC_SUBST(xm_defines)
+AC_SUBST(use_gcc_stdint)
AC_SUBST(c_target_objs)
AC_SUBST(cxx_target_objs)
+AC_SUBST(fortran_target_objs)
AC_SUBST(target_cpu_default)
AC_SUBST_FILE(language_hooks)
AC_ARG_VAR(GMPLIBS,[How to link GMP])
AC_ARG_VAR(GMPINC,[How to find GMP include files])
+AC_ARG_VAR(PPLLIBS,[How to link PPL])
+AC_ARG_VAR(PPLINC,[How to find PPL include files])
+
+AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
+AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
+if test "x${CLOOGLIBS}" != "x" ; then
+ AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
+fi
+
+AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
+AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
+if test "x${LIBELFLIBS}" != "x" ; then
+ AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
+fi
+
+# Check for plugin support
+AC_ARG_ENABLE(plugin,
+[ --enable-plugin enable plugin support],
+enable_plugin=$enableval,
+enable_plugin=yes; default_plugin=yes)
+
+pluginlibs=
+if test x"$enable_plugin" = x"yes"; then
+
+ AC_MSG_CHECKING([for exported symbols])
+ echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
+ ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
+ if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
+ : # No need to use a flag
+ else
+ AC_MSG_CHECKING([for -rdynamic])
+ ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
+ if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
+ pluginlibs="-rdynamic"
+ else
+ enable_plugin=no
+ fi
+ fi
+
+ # Check -ldl
+ saved_LIBS="$LIBS"
+ AC_SEARCH_LIBS([dlopen], [dl])
+ if test x"$ac_cv_search_dlopen" = x"-ldl"; then
+ pluginlibs="$pluginlibs -ldl"
+ fi
+ LIBS="$saved_LIBS"
+
+ # Check that we can build shared objects with -fPIC -shared
+ saved_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -fPIC -shared"
+ AC_MSG_CHECKING([for -fPIC -shared])
+ AC_TRY_LINK(
+ [extern int X;],[return X == 0;],
+ [AC_MSG_RESULT([yes]); have_pic_shared=yes],
+ [AC_MSG_RESULT([no]); have_pic_shared=no])
+ if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
+ pluginlibs=
+ enable_plugin=no
+ fi
+ LDFLAGS="$saved_LDFLAGS"
+
+ # If plugin support had been requested but not available, fail.
+ if test x"$enable_plugin" = x"no" ; then
+ if test x"$default_plugin" != x"yes"; then
+ AC_MSG_ERROR([
+Building GCC with plugin support requires a host that supports
+-fPIC, -shared, -ldl and -rdynamic.])
+ fi
+ fi
+fi
+
+AC_SUBST(pluginlibs)
+AC_SUBST(enable_plugin)
+if test x"$enable_plugin" = x"yes"; then
+ AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
+fi
+
# Configure the subdirectories
# AC_CONFIG_SUBDIRS($subdirs)