# configure.ac for GCC
# Process this file with autoconf to generate a configuration script.
-# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
# Free Software Foundation, Inc.
#This file is part of GCC.
*) gcc_gxx_include_dir=$with_gxx_include_dir ;;
esac])
+# This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
if test x${gcc_gxx_include_dir} = x; then
if test x${enable_version_specific_runtime_libs} = xyes; then
gcc_gxx_include_dir='${libsubdir}/include/c++'
else
- libstdcxx_incdir='c++/$(version)'
+ libstdcxx_incdir='include/c++/$(version)'
+ if test x$host != x$target; then
+ libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
+ fi
changequote(<<, >>)dnl
- gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
+ gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
changequote([, ])dnl
fi
fi
AC_SUBST(NO_MINUS_C_MINUS_O)
AC_SUBST(OUTPUT_OPTION)
+# Remove the -O2: for historical reasons, unless bootstrapping we prefer
+# optimizations to be activated explicitly by the toplevel.
+case "$CC" in
+ */prev-gcc/xgcc*) ;;
+ *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
+esac
+AC_SUBST(CFLAGS)
+
# -------------------------
# Check C compiler features
# -------------------------
CFLAGS="$save_CFLAGS"
])
-strict1_warn=
+strict_warn=
if test $ac_cv_prog_cc_w_no_long_long = yes \
&& test $ac_cv_prog_cc_w_no_variadic_macros = yes \
&& test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
- strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
+ strict_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
fi
# Add -Wold-style-definition if it's accepted
CFLAGS="$save_CFLAGS"
])
if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
- strict1_warn="${strict1_warn} -Wold-style-definition"
+ strict_warn="${strict_warn} -Wold-style-definition"
fi
# Add -Wmissing-format-attribute if it's accepted
CFLAGS="$save_CFLAGS"
])
if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
- strict1_warn="${strict1_warn} -Wmissing-format-attribute"
+ strict_warn="${strict_warn} -Wmissing-format-attribute"
fi
# Enable -Werror, period.
[ --enable-werror-always enable -Werror always], [],
[enable_werror_always=no])
if test x${enable_werror_always} = xyes ; then
- strict1_warn="${strict1_warn} -Werror"
- WERROR=-Werror
+ strict_warn="${strict_warn} -Werror"
fi
-
-AC_SUBST(strict1_warn)
+AC_SUBST(strict_warn)
# Get C++ compatibility warning flag, if supported.
AC_CACHE_CHECK(
fi
AC_SUBST(warn_cflags)
-# Enable -Werror in bootstrap stage2 and later.
+# Enable expensive internal checks
is_release=
if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
is_release=yes
fi
-AC_ARG_ENABLE(werror,
-[ --enable-werror enable -Werror in bootstrap stage2 and later], [],
-[if test x$is_release = x ; then
- # Default to "yes" on development branches.
- enable_werror=yes
-else
- # Default to "no" on release branches.
- enable_werror=no
-fi])
-if test x$enable_werror = xyes ; then
- WERROR=-Werror
-fi
-AC_SUBST(WERROR)
-# Enable expensive internal checks
AC_ARG_ENABLE(checking,
[ --enable-checking[=LIST]
enable expensive run-time checks. With LIST,
esac
TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
- CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
+ CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
if test "x$exec_prefix" = xNONE; then
if test "x$prefix" = xNONE; then
esac],
[enable_languages=c])
-subdirs=
-for lang in ${srcdir}/*/config-lang.in
-do
- case $lang in
- # The odd quoting in the next line works around
- # an apparent bug in bash 1.12 on linux.
-changequote(,)dnl
- ${srcdir}/[*]/config-lang.in) ;;
- *)
- lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
- if test "x$lang_alias" = x
- then
- echo "$lang doesn't set \$language." 1>&2
- exit 1
- fi
- case ",$enable_languages," in
- *,$lang_alias,*)
- subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
- esac
- ;;
-changequote([,])dnl
- esac
-done
-
+# Used by documentation targets
+AC_SUBST(datarootdir)
+AC_SUBST(docdir)
+AC_SUBST(htmldir)
# -------------------------
# Checks for other programs
# UNSORTED
# --------
-# Stage specific cflags for build.
-stage1_cflags=
-case $build in
-vax-*-*)
- if test x$GCC = xyes
- then
- stage1_cflags="-Wa,-J"
- else
- stage1_cflags="-J"
- fi
- ;;
-powerpc-*-darwin*)
- # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
- # sources; use -no-cpp-precomp to get to GNU cpp.
- # Apple's GCC has bugs in designated initializer handling, so disable
- # that too.
- stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
- ;;
-esac
-AC_SUBST(stage1_cflags)
# These libraries may be used by collect2.
# We may need a special search path to get them linked.
#endif
])
+gcc_AC_CHECK_DECLS(sigaltstack, , ,[
+#include "ansidecl.h"
+#include "system.h"
+#include <signal.h>
+])
+
# More time-related stuff.
AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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
+
# --------------------------------------------------------
# Build, host, and target specific configuration fragments
# --------------------------------------------------------
fi
fi
+case ${host} in
+ powerpc*-*-darwin*)
+ AC_CACHE_CHECK([whether mcontext_t fields have underscores],
+ gcc_cv_mcontext_underscores,
+ AC_COMPILE_IFELSE([
+#include <sys/cdefs.h>
+#include <sys/signal.h>
+#include <ucontext.h>
+int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
+],
+ gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
+ if test $gcc_cv_mcontext_underscores = yes; then
+ AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
+ [mcontext_t fields start with __])
+ fi
+ ;;
+esac
+
# ---------
# Threading
# ---------
if test x$enable___cxa_atexit = xyes || \
test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
if test x$host = x$target; then
- AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
- [echo "__cxa_atexit can't be enabled on this target"])
+ case $host in
+ # mingw32 doesn't have __cxa_atexit but uses atexit registration
+ # keyed to flag_use_cxa_atexit
+ *-*-mingw32*)
+ use_cxa_atexit=yes
+ ;;
+ *)
+ AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
+ [echo "__cxa_atexit can't be enabled on this target"])
+ ;;
+ esac
else
# We can't check for __cxa_atexit when building a cross, so assume
# it is available
use_cxa_atexit=yes
fi
if test x$use_cxa_atexit = xyes; then
- AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
+ AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
[Define if you want to use __cxa_atexit, rather than atexit, to
register C++ destructors for local statics and global objects.
This is essential for fully standards-compliant handling of
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}
done
tmake_file="${tmake_file_}"
-# If the host doesn't support symlinks, modify CC in
-# FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
-# Otherwise, we can use "CC=$(CC)".
-rm -f symtest.tem
-case "$LN_S" in
- *-s*)
- cc_set_by_configure="\$(CC)"
- quoted_cc_set_by_configure="\$(CC)"
- stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
- quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
- ;;
- *)
- cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
- quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
- stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
- quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
- ;;
-esac
-
# This is a terrible hack which will go away some day.
host_cc_for_libada=${CC}
AC_SUBST(host_cc_for_libada)
tm_include_list="options.h"
for f in $tm_file; do
case $f in
+ ./* )
+ f=`echo $f | sed 's/^..//'`
+ tm_file_list="${tm_file_list} $f"
+ tm_include_list="${tm_include_list} $f"
+ ;;
defaults.h )
tm_file_list="${tm_file_list} \$(srcdir)/$f"
tm_include_list="${tm_include_list} $f"
esac
done
-# Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
+# Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
+# cross-compiler which does not use the native headers and libraries.
# Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
CROSS= AC_SUBST(CROSS)
ALL=all.internal AC_SUBST(ALL)
SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
if test "x$with_build_sysroot" != x; then
- build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
+ build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
else
# This value is used, even on a native system, because
# CROSS_SYSTEM_HEADER_DIR is just
if test x$host != x$target
then
- CROSS="-DCROSS_COMPILE"
+ CROSS="-DCROSS_DIRECTORY_STRUCTURE"
ALL=all.cross
SYSTEM_HEADER_DIR=$build_system_header_dir
case "$host","$target" in
gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
AS_VAR_SET_IF(gcc_cv_nm,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
- && test -f ../binutils/Makefile; then
+ && test -f ../binutils/Makefile \
+ && test x$build = x$host; then
gcc_cv_nm=../binutils/nm-new$build_exeext
elif test -x nm$build_exeext; then
gcc_cv_nm=./nm$build_exeext
# Figure out what objdump we will be using.
AS_VAR_SET_IF(gcc_cv_objdump,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
- && test -f ../binutils/Makefile; then
+ && test -f ../binutils/Makefile \
+ && test x$build = x$host; then
# Single tree build which includes binutils.
gcc_cv_objdump=../binutils/objdump$build_exeext
elif test -x objdump$build_exeext; then
[Define if your assembler supports specifying the maximum number
of bytes to skip when using the GAS .p2align command.])])
+gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
+ [2,8,0],,
+ [.literal16],,
+[AC_DEFINE(HAVE_GAS_LITERAL16, 1,
+ [Define if your assembler supports .literal16.])])
+
gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
[elf,2,9,0],,
[conftest_label1: .word 0
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
- -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
+ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\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]*\.\([0-9]*\)'`
EOF
# If the assembler didn't choke, and we can objdump,
# and we got the correct data, then succeed.
+ # The text in the here-document typically retains its unix-style line
+ # endings, while the output of objdump will use host line endings.
+ # Therefore, use diff -b for the comparisons.
if test x$gcc_cv_objdump != x \
&& $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
| tail -3 > conftest.got \
- && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
- || cmp conftest.big conftest.got > /dev/null 2>&1; }
+ && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
+ || diff -b conftest.big conftest.got > /dev/null 2>&1; }
then
gcc_cv_as_eh_frame=yes
elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
comdat_group=no
fi
fi
- if test $comdat_group = no; then
- gcc_cv_as_comdat_group=no
- gcc_cv_as_comdat_group_percent=no
- fi
+else
+ # assume linkers other than GNU ld don't support COMDAT group
+ comdat_group=no
+fi
+if test $comdat_group = no; then
+ gcc_cv_as_comdat_group=no
+ gcc_cv_as_comdat_group_percent=no
fi
AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
[`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
;;
sparc*-*-*)
case "$target" in
+ sparc*-sun-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
+ ;;
sparc*-sun-solaris2.*)
on_solaris=yes
;;
[AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
[Define if your assembler supports the Sun syntax for cmov.])])
+ gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
+ gcc_cv_as_ix86_ffreep,,,
+ [ffreep %st(1)],,
+ [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
+ [Define if your assembler supports the ffreep mnemonic.])])
+
+ gcc_GAS_CHECK_FEATURE([sahf mnemonic],
+ gcc_cv_as_ix86_sahf,,,
+ [sahf],,
+ [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
+ [Define if your assembler supports the sahf mnemonic.])])
+
+ gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
+ gcc_cv_as_ix86_diff_sect_delta,,,
+ [.section .rodata
+.L1:
+ .long .L2-.L1
+ .long .L3-.L1
+ .text
+.L3: nop
+.L2: nop],,
+ [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
+ [Define if your assembler supports the subtraction of symbols in different sections.])])
+
# This one is used unconditionally by i386.[ch]; it is to be defined
# to 1 if the feature is present, 0 otherwise.
gcc_GAS_CHECK_FEATURE([GOTOFF in data],
[Define if your assembler supports fprnd.])])
case $target in
+ *-*-aix*) conftest_s=' .machine "pwr6"
+ .csect .text[[PR]]
+ mffgpr 1,3';;
+ *) conftest_s=' .machine power6
+ .text
+ mffgpr 1,3';;
+ esac
+
+ gcc_GAS_CHECK_FEATURE([move fp gpr support],
+ gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
+ [$conftest_s],,
+ [AC_DEFINE(HAVE_AS_MFPGPR, 1,
+ [Define if your assembler supports mffgpr and mftgpr.])])
+
+ case $target in
*-*-aix*) conftest_s=' .csect .text[[PR]]
LCF..0:
addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
[$conftest_s],,
[AC_DEFINE(HAVE_AS_REL16, 1,
[Define if your assembler supports R_PPC_REL16 relocs.])])
+
+ case $target in
+ *-*-aix*) conftest_s=' .machine "pwr6"
+ .csect .text[[PR]]
+ cmpb 3,4,5';;
+ *) conftest_s=' .machine power6
+ .text
+ cmpb 3,4,5';;
+ esac
+
+ gcc_GAS_CHECK_FEATURE([compare bytes support],
+ gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
+ [$conftest_s],,
+ [AC_DEFINE(HAVE_AS_CMPB, 1,
+ [Define if your assembler supports cmpb.])])
+
+ case $target in
+ *-*-aix*) conftest_s=' .machine "pwr6"
+ .csect .text[[PR]]
+ dadd 1,3';;
+ *) conftest_s=' .machine power6
+ .text
+ dadd 1,3';;
+ esac
+
+ gcc_GAS_CHECK_FEATURE([decimal float support],
+ gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
+ [$conftest_s],,
+ [AC_DEFINE(HAVE_AS_DFP, 1,
+ [Define if your assembler supports DFP instructions.])])
;;
mips*-*-*)
then target_cpu_default=MASK_EXPLICIT_RELOCS
else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
fi])
+ gcc_GAS_CHECK_FEATURE([-mno-shared support],
+ gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
+ [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
+ [Define if the assembler understands -mno-shared.])])
;;
esac
case "$target" in
i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
| x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
- | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-*)
+ | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
insn="nop"
;;
ia64*-*-* | s390*-*-*)
[Define if your assembler supports the --gstabs option.])])
fi
+AC_CACHE_CHECK([assembler for tolerance to line number 0],
+ [gcc_cv_as_line_zero],
+ [gcc_cv_as_line_zero=no
+ if test $in_tree_gas = yes; then
+ gcc_GAS_VERSION_GTE_IFELSE([2,16,91], [gcc_cv_as_line_zero=yes])
+ elif test "x$gcc_cv_as" != x; then
+ { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
+ if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
+ test "x`cat conftest.out`" = x
+ then
+ gcc_cv_as_line_zero=yes
+ else
+ echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
+ cat conftest.s >&AS_MESSAGE_LOG_FD
+ echo "configure: error output was" >&AS_MESSAGE_LOG_FD
+ cat conftest.out >&AS_MESSAGE_LOG_FD
+ fi
+ rm -f conftest.o conftest.s conftest.out
+ fi])
+if test "x$gcc_cv_as_line_zero" = xyes; then
+ AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
+[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 $in_tree_ld = yes ; then
fi
AC_MSG_RESULT($gcc_cv_ld_pie)
+AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
+gcc_cv_ld_eh_gc_sections=no
+if test $in_tree_ld = yes ; then
+ if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
+ && test $in_tree_ld_is_elf = yes; then
+ gcc_cv_ld_eh_gc_sections=yes
+ fi
+elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
+ cat > conftest.s <<EOF
+ .section .text
+.globl _start
+ .type _start, @function
+_start:
+ .long foo
+ .size _start, .-_start
+ .section .text.foo,"ax",@progbits
+ .type foo, @function
+foo:
+ .long 0
+ .size foo, .-foo
+ .section .gcc_except_table.foo,"a",@progbits
+.L0:
+ .long 0
+ .section .eh_frame,"a",@progbits
+ .long .L0
+EOF
+ if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
+ if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
+ | grep "gc-sections option ignored" > /dev/null; then
+ gcc_cv_ld_eh_gc_sections=no
+ elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
+ gcc_cv_ld_eh_gc_sections=yes
+ # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
+ if test x$gcc_cv_as_comdat_group != xyes; then
+ gcc_cv_ld_eh_gc_sections=no
+ cat > conftest.s <<EOF
+ .section .text
+.globl _start
+ .type _start, @function
+_start:
+ .long foo
+ .size _start, .-_start
+ .section .gnu.linkonce.t.foo,"ax",@progbits
+ .type foo, @function
+foo:
+ .long 0
+ .size foo, .-foo
+ .section .gcc_except_table.foo,"a",@progbits
+.L0:
+ .long 0
+ .section .eh_frame,"a",@progbits
+ .long .L0
+EOF
+ if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
+ if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
+ | grep "gc-sections option ignored" > /dev/null; then
+ gcc_cv_ld_eh_gc_sections=no
+ elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
+ gcc_cv_ld_eh_gc_sections=yes
+ fi
+ fi
+ fi
+ fi
+ fi
+ rm -f conftest.s conftest.o conftest
+fi
+case "$target" in
+ hppa*-*-linux*)
+ # ??? This apparently exposes a binutils bug with PC-relative relocations.
+ gcc_cv_ld_eh_gc_sections=no
+ ;;
+esac
+if test x$gcc_cv_ld_eh_gc_sections = xyes; then
+ AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
+ [Define if your linker supports garbage collection of
+ sections in presence of EH frames.])
+fi
+AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
+
# --------
# UNSORTED
# --------
fi
if test x$with_sysroot = x && test x$host = x$target \
- && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
+ && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
+ && test "$prefix" != "NONE"; then
AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
[Define to PREFIX/include if cpp should also search that directory.])
fi
# Test for stack protector support in target C library.
-case "$target" in
- *-*-linux*)
- AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
+AC_CACHE_CHECK(__stack_chk_fail in target C library,
gcc_cv_libc_provides_ssp,
[gcc_cv_libc_provides_ssp=no
+ case "$target" in
+ *-*-linux*)
if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
if test "x$with_sysroot" = x; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
+ elif test "x$with_build_sysroot" != "x"; then
+ glibc_header_dir="${with_build_sysroot}/usr/include"
elif test "x$with_sysroot" = xyes; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
else
$glibc_header_dir/features.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
fi
- fi]) ;;
+ fi
+ ;;
+ *-*-darwin*)
+ AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+ [echo "no __stack_chk_fail on this target"])
+ ;;
*) gcc_cv_libc_provides_ssp=no ;;
-esac
+ esac])
+
if test x$gcc_cv_libc_provides_ssp = xyes; then
AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
[Define if your target C library provides stack protector support])
fi
+# Check if TFmode long double should be used by default or not.
+# Some glibc targets used DFmode long double, but with glibc 2.4
+# and later they can use TFmode.
+case "$target" in
+ powerpc*-*-*gnu* | \
+ sparc*-*-linux* | \
+ s390*-*-linux* | \
+ alpha*-*-linux*)
+ AC_ARG_WITH(long-double-128,
+[ --with-long-double-128 Use 128-bit long double by default.],
+ gcc_cv_target_ldbl128="$with_long_double_128",
+ [gcc_cv_target_ldbl128=no
+ 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"
+ elif test "x$with_build_sysroot" != "x"; then
+ glibc_header_dir="${with_build_sysroot}/usr/include"
+ elif test "x$with_sysroot" = xyes; then
+ glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
+ else
+ glibc_header_dir="${with_sysroot}/usr/include"
+ fi
+ 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_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
+ [Define if TFmode long double should be the default])
+fi
+
# Find out what GC implementation we want, or may, use.
AC_ARG_WITH(gc,
[ --with-gc={page,zone} choose the garbage collection mechanism to use
# Make empty files to contain the specs and options for each language.
# Then add #include lines to for a compiler that has specs and/or options.
+subdirs=
lang_opt_files=
lang_specs_files=
lang_tree_files=
-for subdir in . $subdirs
-do
- if test -f $srcdir/$subdir/lang.opt; then
- lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
- fi
- if test -f $srcdir/$subdir/lang-specs.h; then
- lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
- fi
- if test -f $srcdir/$subdir/$subdir-tree.def; then
- lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
- fi
-done
-
# These (without "all_") are set in each config-lang.in.
# `language' must be a single word so is spelled singularly.
all_languages=
-all_boot_languages=
all_compilers=
-all_stagestuff=
-all_outputs='Makefile gccbug mklibgcc libada-mk'
+all_outputs='Makefile gccbug libada-mk'
# List of language makefile fragments.
all_lang_makefrags=
# List of language subdirectory makefiles. Deprecated.
all_gtfiles_files_langs=
all_gtfiles_files_files=
+# These are the languages that are set in --enable-languages,
+# and are available in the GCC tree.
+all_selected_languages=
+
# Add the language fragments.
# Languages are added via two mechanisms. Some information must be
# recorded in makefile variables, these are defined in config-lang.in.
language_hooks="Make-hooks"
-for s in $subdirs
+for lang in ${srcdir}/*/config-lang.in
do
- language=
- boot_language=
- compilers=
- stagestuff=
- outputs=
- gtfiles=
- . ${srcdir}/$s/config-lang.in
- if test "x$language" = x
- then
- echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
- exit 1
- fi
- all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
- if test -f ${srcdir}/$s/Makefile.in
- then all_lang_makefiles="$s/Makefile"
- fi
- all_languages="$all_languages $language"
- if test "x$boot_language" = xyes
- then
- all_boot_languages="$all_boot_languages $language"
- fi
- all_compilers="$all_compilers $compilers"
- all_stagestuff="$all_stagestuff $stagestuff"
- all_outputs="$all_outputs $outputs"
- all_gtfiles="$all_gtfiles $gtfiles"
- for f in $gtfiles
- do
- all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
- all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
- done
+changequote(,)dnl
+ test "$lang" = "${srcdir}/*/config-lang.in" && continue
+
+ lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
+ if test "x$lang_alias" = x
+ then
+ echo "$lang doesn't set \$language." 1>&2
+ exit 1
+ fi
+ subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
+ subdirs="$subdirs $subdir"
+ case ",$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"
+ fi
+ ;;
+ esac
+changequote([,])dnl
+
+ language=
+ boot_language=
+ compilers=
+ outputs=
+ gtfiles=
+ subdir_requires=
+ . ${srcdir}/$subdir/config-lang.in
+ if test "x$language" = x
+ then
+ echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
+ exit 1
+ fi
+
+ ok=:
+ case ",$enable_languages," in
+ *,$lang_alias,*) ;;
+ *)
+ for i in $subdir_requires; do
+ test -f "${srcdir}/$i/config-lang.in" && continue
+ ok=false
+ break
+ done
+ ;;
+ 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"
+ fi
+ if test -f $srcdir/$subdir/$subdir-tree.def; then
+ lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
+ fi
+ if test -f ${srcdir}/$subdir/Makefile.in
+ then all_lang_makefiles="$subdir/Makefile"
+ fi
+ all_languages="$all_languages $language"
+ all_compilers="$all_compilers $compilers"
+ all_outputs="$all_outputs $outputs"
+ all_gtfiles="$all_gtfiles $gtfiles"
+ for f in $gtfiles
+ do
+ all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
+ all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
+ done
done
# Pick up gtfiles for c
gtfiles=
-s="c"
+subdir="c"
. ${srcdir}/c-config-lang.in
all_gtfiles="$all_gtfiles $gtfiles"
for f in $gtfiles
do
- all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
+ all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
done
check_languages=
-for language in $all_languages
+for language in $all_selected_languages
do
- check_languages="$check_languages check-$language"
+ check_languages="$check_languages check-$language"
done
# We link each language in with a set of hooks, reached indirectly via
-# lang.${target}.
+# lang.${target}. Only do so for selected languages.
rm -f Make-hooks
touch Make-hooks
target_list="all.cross start.encap rest.encap tags \
- install-common install-man \
- uninstall info man srcextra srcman srcinfo \
- mostlyclean clean distclean maintainer-clean \
- stage1 stage2 stage3 stage4 stageprofile stagefeedback"
+ install-common install-man install-info install-pdf dvi pdf \
+ html uninstall info man srcextra srcman srcinfo \
+ mostlyclean clean distclean maintainer-clean"
+
for t in $target_list
do
x=
- for lang in $all_languages
+ for lang in $all_selected_languages
do
- x="$x $lang.$t"
+ x="$x $lang.$t"
done
echo "lang.$t: $x" >> Make-hooks
done
installed in a compiler-specific directory])
AC_ARG_WITH(slibdir,
-[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
+[ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
slibdir="$with_slibdir",
if test "${enable_version_specific_runtime_libs+set}" = set; then
slibdir='$(libsubdir)'
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(all_boot_languages)
AC_SUBST(all_compilers)
AC_SUBST(all_gtfiles)
AC_SUBST(all_gtfiles_files_langs)
AC_SUBST(all_lang_makefrags)
AC_SUBST(all_lang_makefiles)
AC_SUBST(all_languages)
-AC_SUBST(all_stagestuff)
+AC_SUBST(all_selected_languages)
AC_SUBST(build_exeext)
AC_SUBST(build_install_headers_dir)
AC_SUBST(build_xm_file_list)
AC_SUBST(build_xm_include_list)
AC_SUBST(build_xm_defines)
AC_SUBST(check_languages)
-AC_SUBST(cc_set_by_configure)
-AC_SUBST(quoted_cc_set_by_configure)
AC_SUBST(cpp_install_dir)
AC_SUBST(xmake_file)
AC_SUBST(tmake_file)
AC_SUBST(float_h_file)
AC_SUBST(gcc_config_arguments)
AC_SUBST(gcc_gxx_include_dir)
-AC_SUBST(libstdcxx_incdir)
AC_SUBST(host_exeext)
AC_SUBST(host_xm_file_list)
AC_SUBST(host_xm_include_list)
AC_SUBST(objc_boehm_gc)
AC_SUBST(out_file)
AC_SUBST(out_object_file)
-AC_SUBST(stage_prefix_set_by_configure)
-AC_SUBST(quoted_stage_prefix_set_by_configure)
AC_SUBST(thread_file)
AC_SUBST(tm_file_list)
AC_SUBST(tm_include_list)
do
test -d $d || mkdir $d
done
-# If the host supports symlinks, point stage[1234] at ../stage[1234] so
-# bootstrapping and the installation procedure can still use
-# CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
-# FLAGS_TO_PASS has been modified to solve the problem there.
-# This is virtually a duplicate of what happens in configure.lang; we do
-# an extra check to make sure this only happens if ln -s can be used.
-case "$LN_S" in
- *-s*)
- for d in ${subdirs} ; do
- STARTDIR=`${PWDCMD-pwd}`
- cd $d
- for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
- do
- rm -f $t
- $LN_S ../$t $t 2>/dev/null
- done
- cd $STARTDIR
- done
- ;;
-esac
],
[subdirs='$subdirs'])
AC_OUTPUT
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