# Process this file with autoconf to generate a configuration script.
# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009 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"$srcdir"/ada])
# autoconf is lame and doesn't give us any substitution variable for this.
AC_CHECK_SIZEOF(long)
AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
+GCC_STDINT_TYPES
# ---------------------
# Warnings and checking
# So, we only use -pedantic if we can disable those warnings.
ACX_PROG_CC_WARNING_OPTS(
- m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
- [-Wmissing-prototypes -Wcast-qual])), [loose_warn])
+ m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
ACX_PROG_CC_WARNING_OPTS(
- m4_quote(m4_do([-Wold-style-definition -Wc++-compat ],
- [-Wmissing-format-attribute])), [strict_warn])
+ m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
+ [c_loose_warn])
+ACX_PROG_CC_WARNING_OPTS(
+ m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
+ACX_PROG_CC_WARNING_OPTS(
+ m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
[-Wno-overlength-strings])), [strict_warn])
ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
# The above macros do nothing if the compiler is not GCC. However, the
-# Makefile has more goo to add other flags, so this variabl is used to
-# enables warnings only for GCC.
+# Makefile has more goo to add other flags, so these variables are used
+# to enable warnings only for GCC.
warn_cflags=
+warn_cxxflags=
if test "x$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=
# 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)],
:,
gettimeofday mbstowcs wcswidth mmap mincore setlocale \
gcc_UNLOCKED_FUNCS)
+save_CPPFLAGS="$CPPFLAGS"
+save_LIBS="$LIBS"
+LIBS="$LIBS $LIBELFLIBS"
+AC_CHECK_FUNCS(elf_getshdrstrndx,,
+ [AC_CHECK_FUNCS(elf_getshstrndx,
+ [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
+#include <libelf.h>
+int main()
+{
+ return elf_getshstrndx (NULL, 0) == 0;
+}]]), AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
+ [Define if elf_getshstrndx has gABI conformant return values.])])])]
+ )
+LIBS="$save_LIBS"
+CPPFLAGS="$save_CPPFLAGS"
+
if test x$ac_cv_func_mbstowcs = xyes; then
AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
[ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
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, "$PLUGIN_LD", [Specify plugin linker])
+
+# Check to see if we are using gold instead of ld
+AC_MSG_CHECKING(whether we are using gold)
+ld_is_gold=no
+if test x$gcc_cv_ld != x; then
+ if $gcc_cv_ld --version 2>/dev/null | sed 1q \
+ | grep "GNU gold" > /dev/null; then
+ ld_is_gold=yes
+ fi
+fi
+AC_MSG_RESULT($ld_is_gold)
+
ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
AC_SUBST(ORIGINAL_LD_FOR_TARGET)
case "$ORIGINAL_LD_FOR_TARGET" in
[ .hidden foobar
foobar:])
+changequote(,)dnl
+if test $in_tree_ld != yes ; then
+ ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
+ if test x"$ld_is_gold" = xyes; then
+ gcc_cv_ld_hidden=yes
+ elif echo "$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]*\.\([0-9]*\)'`
+ else
+ case "${target}" in
+ *-*-solaris2*)
+ #
+ # Solaris 2 ld -V output looks like this for a regular version:
+ #
+ # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
+ #
+ # but test versions add stuff at the end:
+ #
+ # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
+ #
+ ld_ver=`$gcc_cv_ld -V 2>&1`
+ if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
+ ld_vers=`echo $ld_ver | sed -n \
+ -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
+ ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
+ ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
+ fi
+ ;;
+ esac
+ 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 $in_tree_ld_is_elf = yes; then
gcc_cv_ld_hidden=yes
fi
else
-changequote(,)dnl
gcc_cv_ld_hidden=yes
- ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
if echo "$ld_ver" | grep GNU > /dev/null; then
- 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
;;
esac
fi
-changequote([,])dnl
-fi])
+fi]])
libgcc_visibility=no
AC_SUBST(libgcc_visibility)
GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
.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 $as_minor -lt 11
then :
else gcc_cv_as_leb128=yes
fi
- fi],
+ fi]],
[AC_DEFINE(HAVE_AS_LEB128, 1,
[Define if your assembler supports .sleb128 and .uleb128.])])
sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
gcc_cv_as_cfi_directive=no
else
- gcc_cv_as_cfi_directive=yes
+ case "$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
[ .text
.cfi_startproc
.cfi_adjust_cfa_offset 64
- .skip 512, 0
+ .skip 75040, 0
.cfi_adjust_cfa_offset 128
.cfi_endproc],
-[
-changequote(,)dnl
+[[
if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
- | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
+ | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
gcc_cv_as_cfi_advance_working=yes
fi
-changequote([,])dnl
-])
+]])
else
# no readelf, err on the side of caution
gcc_cv_as_cfi_advance_working=no
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 x"$ld_is_gold" = xyes; then
+ comdat_group=yes
+elif 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 $in_tree_ld_is_elf = yes; then
+ comdat_group=yes
+ fi
+elif echo "$ld_ver" | grep GNU > /dev/null; then
comdat_group=yes
if test 0"$ld_date" -lt 20050308; then
if test -n "$ld_date"; then
fi
fi
else
- # assume linkers other than GNU ld don't support COMDAT group
- comdat_group=no
+changequote(,)dnl
+ case "${target}" in
+ *-*-solaris2.1[1-9]*)
+ # Sun ld has COMDAT group support since Solaris 9, but it doesn't
+ # interoperate with GNU as until Solaris 11 build 130, i.e. ld
+ # version 1.688.
+ #
+ # FIXME: Maybe need to refine later when COMDAT group support with
+ # Sun as is implemented.
+ if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
+ comdat_group=yes
+ else
+ comdat_group=no
+ fi
+ ;;
+ *)
+ # Assume linkers other than GNU ld don't support COMDAT group.
+ comdat_group=no
+ ;;
+ esac
+changequote([,])dnl
fi
+# Allow overriding the automatic COMDAT group tests above.
+AC_ARG_ENABLE(comdat,
+ [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
+ [comdat_group="$enable_comdat"])
if test $comdat_group = no; then
gcc_cv_as_comdat_group=no
gcc_cv_as_comdat_group_percent=no
[`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler and linker support COMDAT groups.])
+gcc_GAS_CHECK_FEATURE([line table discriminator support],
+ gcc_cv_as_discriminator,
+ [2,19,51],,
+[ .text
+ .file 1 "conf.c"
+ .loc 1 1 0 discriminator 1],,
+[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
+ [Define if your assembler supports the .loc discriminator sub-directive.])])
+
# Thread-local storage - the check is heavily parameterized.
conftest_s=
tls_first_major=
tls_first_minor=17
;;
i[34567]86-*-*)
- conftest_s='
- .section ".tdata","awT",@progbits
+ case "$target" in
+ i[34567]86-*-solaris2.[89]*)
+ # 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 $foo@TPOFF, %eax
- leal foo@NTPOFF(%ecx), %eax'
- tls_first_major=2
- tls_first_minor=14
- tls_as_opt=--fatal-warnings
- ;;
+ leal foo@tlsgd(,%ebx,1), %eax
+ leal foo@tlsldm(%ebx), %eax
+ leal foo@dtpoff(%eax), %edx
+ movl foo@gottpoff(%ebx), %eax
+ subl foo@gottpoff(%ebx), %eax
+ addl foo@gotntpoff(%ebx), %eax
+ movl foo@indntpoff, %eax
+ movl \$foo@tpoff, %eax
+ subl \$foo@tpoff, %eax
+ leal foo@ntpoff(%ecx), %eax"
+ ;;
x86_64-*-*)
conftest_s='
.section ".tdata","awT",@progbits
tls_first_minor=16
tls_as_opt='-32 --fatal-warnings'
;;
+ m68k-*-*)
+ conftest_s='
+ .section .tdata,"awT",@progbits
+x:
+ .word 2
+ .text
+foo:
+ move.l x@TLSGD(%a5),%a0
+ move.l x@TLSLDM(%a5),%a0
+ move.l x@TLSLDO(%a5),%a0
+ move.l x@TLSIE(%a5),%a0
+ move.l x@TLSLE(%a5),%a0'
+ tls_first_major=2
+ tls_first_minor=19
+ tls_as_opt='--fatal-warnings'
+ ;;
powerpc-*-*)
conftest_s='
.section ".tdata","awT",@progbits
;;
sparc*-*-*)
case "$target" in
- sparc*-sun-solaris2.[56789]*)
+ sparc*-sun-solaris2.[89]*)
# 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$enable_tls" = xyes ; then
[AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
[Define if your assembler supports -relax option.])])
+ gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
+ gcc_cv_as_sparc_gotdata_op,,
+ [-K PIC],
+[.text
+foo:
+ nop
+bar:
+ sethi %gdop_hix22(foo), %g1
+ xor %g1, %gdop_lox10(foo), %g1
+ ld [[%l7 + %g1]], %g2, %gdop(foo)],
+ [if test x$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 $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
+ [Define if your assembler supports specifying the alignment
+ of objects allocated using the GAS .comm command.])
# Used for DWARF 2 in PE
gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
gcc_cv_as_ix86_pe_secrel32,
[AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
[Define if your assembler supports the sahf mnemonic.])])
+ gcc_GAS_CHECK_FEATURE([swap suffix],
+ gcc_cv_as_ix86_swap,,,
+ [movl.s %esp, %ebp],,
+ [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
+ [Define if your assembler supports the swap suffix.])])
+
gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
gcc_cv_as_ix86_diff_sect_delta,,,
[.section .rodata
esac
gcc_GAS_CHECK_FEATURE([move fp gpr support],
- gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
+ gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
[$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.])])
esac
gcc_GAS_CHECK_FEATURE([vector-scalar support],
- gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
+ 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],,
[ 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
[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$enable_gnu_unique_object = xyes; then
+ AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
+ [Define if your assembler supports @gnu_unique_object.])
+fi
+
AC_CACHE_CHECK([assembler for tolerance to line number 0],
[gcc_cv_as_line_zero],
[gcc_cv_as_line_zero=no
case "$target" in
*-*-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' \
$glibc_header_dir/bits/uClibc_config.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
fi
- fi
+ fi]
;;
*-*-gnu*)
# Avoid complicated tests (see
# simply assert that glibc does provide this, which is true for all
# realistically usable GNU/Hurd configurations.
gcc_cv_libc_provides_ssp=yes;;
- *-*-darwin*)
+ *-*-darwin* | *-*-freebsd*)
AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
[echo "no __stack_chk_fail on this target"])
;;
AC_ARG_WITH(long-double-128,
[ --with-long-double-128 Use 128-bit long double by default.],
gcc_cv_target_ldbl128="$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"
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 $target_list
do
fi)
AC_SUBST(slibdir)
-AC_ARG_WITH(datarootdir,
-[ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
-datarootdir="\${prefix}/$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='$(docdir)')
-AC_SUBST(htmldir)
-
# Substitute configuration variables
AC_SUBST(subdirs)
AC_SUBST(srcdir)
AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
fi
+AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
+AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
+if test "x${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],
pluginlibs=
if test x"$enable_plugin" = x"yes"; then
- # Check that the host supports -rdynamic and -ldl
- have_rdynamic=no
- have_dl=no
- saved_LDFLAGS="$LDFLAGS"
- saved_LIBS="$LIBS"
- LIBS=
-
- # Check -rdynamic
- LDFLAGS="$LDFLAGS -rdynamic"
- AC_MSG_CHECKING([for -rdynamic])
- AC_TRY_LINK([],[return 0;],
- [AC_MSG_RESULT([yes]); have_rdynamic=yes],
- [AC_MSG_RESULT([no])])
- if test x"$have_rdynamic" = x"yes" ; then
- pluginlibs="-rdynamic"
+
+ 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 $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
+ plugin_rdynamic=yes
+ pluginlibs="-rdynamic"
+ else
+ plugin_rdynamic=no
+ enable_plugin=no
+ fi
+ AC_MSG_RESULT([$plugin_rdynamic])
fi
# Check -ldl
- LDFLAGS="$LDFLAGS -ldl"
- AC_MSG_CHECKING([for -ldl])
- AC_TRY_LINK(
- [#include <dlfcn.h>],
- [volatile int f = 0; if (f) dlopen ("dummy", 0);],
- [AC_MSG_RESULT([yes]); have_dl=yes],
- [AC_MSG_RESULT([no])])
- if test x"$have_dl" = x"yes"; then
+ 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"$have_pic_shared" != x"yes"; then
+ if test x"$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"$enable_plugin" = x"no" ; then
-fPIC, -shared, -ldl and -rdynamic.])
fi
fi
-
- LDFLAGS="$saved_LDFLAGS"
- LIBS="$saved_LIBS"
fi
AC_SUBST(pluginlibs)
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