[ --enable-secureplt enable -msecure-plt by default for PowerPC],
[], [])
-AC_ARG_ENABLE(leading-mingw64-underscores,
- AS_HELP_STRING([--enable-leading-mingw64-underscores],
- [Enable leading underscores on 64 bit mingw targets]),
- [],[])
-AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
- [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
- [Define if we should use leading underscore on 64 bit mingw targets])])
-
AC_ARG_ENABLE(cld,
[ --enable-cld enable -mcld by default for 32bit x86], [],
[enable_cld=no])
gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
[elf,2,13,0],,
[ .hidden foobar
-foobar:],[
-# Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
-# STV_HIDDEN, so disable .hidden support if so.
-case "${target}" in
- i?86-*-solaris2*)
- if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
- cat > conftest.s <<EOF
-.globl hidden
- .hidden hidden
-hidden:
-.globl default
- .set default,hidden
-EOF
- if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
- && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
- grep '\.hidden default' > /dev/null; then
- gcc_cv_as_hidden=no
- else
- gcc_cv_as_hidden=yes
- fi
- else
- # Assume bug is present if objdump is missing.
- gcc_cv_as_hidden=no
- fi
- ;;
- *)
- gcc_cv_as_hidden=yes
- ;;
-esac])
+foobar:])
changequote(,)dnl
if test $in_tree_ld != yes ; then
gcc_cv_ld_hidden=yes
;;
*-*-solaris2.9* | *-*-solaris2.1[0-9]*)
- # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
- # .symbolic was only added in Solaris 9 12/02.
gcc_cv_ld_hidden=yes
;;
*)
rm -f conftest],
[AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
[Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
- # Test if the assembler supports the extended form of the .section
- # directive that specifies section alignment. LTO support uses this,
- # but normally only after installation, so we warn but don't fail the
- # configure if LTO is enabled but the assembler does not support it.
- gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
- [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
- if test x$gcc_cv_as_section_has_align != xyes; then
- case ",$enable_languages," in
- *,lto,*)
- AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
- ;;
- esac
- fi
;;
esac
[AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
[Define if your assembler supports the ffreep mnemonic.])])
- gcc_GAS_CHECK_FEATURE([.quad directive],
- gcc_cv_as_ix86_quad,,,
- [.quad 0],,
- [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
- [Define if your assembler supports the .quad directive.])])
-
gcc_GAS_CHECK_FEATURE([sahf mnemonic],
gcc_cv_as_ix86_sahf,,,
[sahf],,
[AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
[Define if your assembler supports the subtraction of symbols in different sections.])])
- # These two are used unconditionally by i386.[ch]; it is to be defined
+ # 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],
gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
[`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
[Define true if the assembler supports '.long foo@GOTOFF'.])
-
- gcc_GAS_CHECK_FEATURE([rep and lock prefix],
- gcc_cv_as_ix86_rep_lock_prefix,,,
- [rep movsl
- lock orl $0, (%esp)])
- AC_DEFINE_UNQUOTED(HAVE_AS_IX86_REP_LOCK_PREFIX,
- [`if test $gcc_cv_as_ix86_rep_lock_prefix = yes; then echo 1; else echo 0; fi`],
- [Define true if the assembler supports 'rep <insn>, lock <insn>'.])
-
;;
ia64*-*-*)
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 2> /dev/null \
- | grep gcc_except_table > /dev/null; then
+ 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
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 2> /dev/null \
- | grep gcc_except_table > /dev/null; then
+ elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes
fi
fi
AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
enable_lto=yes
AC_SUBST(enable_lto)
- # LTO needs to speak the platform's object file format, and has a
- # number of implementations of the required binary file access APIs.
- # ELF is the most common, and default. We only link libelf if ELF
- # is indeed the selected format.
- LTO_BINARY_READER=${lto_binary_reader}
- LTO_USE_LIBELF=-lelf
- if test "x$lto_binary_reader" != "xlto-elf" ; then
- LTO_USE_LIBELF=
- fi
- AC_SUBST(LTO_BINARY_READER)
- AC_SUBST(LTO_USE_LIBELF)
;;
*) ;;
esac
pluginlibs=
if test x"$enable_plugin" = x"yes"; then
- case "${host}" in
- *-*-darwin*)
- export_sym_check="$gcc_cv_nm -g"
- ;;
- *)
- export_sym_check="$gcc_cv_objdump -T"
- ;;
- esac
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 $export_sym_check conftest | grep foobar > /dev/null; then
+ 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 $export_sym_check conftest | grep foobar > /dev/null; then
+ if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
plugin_rdynamic=yes
pluginlibs="-rdynamic"
else
# Check that we can build shared objects with -fPIC -shared
saved_LDFLAGS="$LDFLAGS"
- case "${host}" in
- *-*-darwin*)
- LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup"
- ;;
- *)
- LDFLAGS="$LDFLAGS -fPIC -shared"
- ;;
- esac
+ LDFLAGS="$LDFLAGS -fPIC -shared"
AC_MSG_CHECKING([for -fPIC -shared])
AC_TRY_LINK(
[extern int X;],[return X == 0;],
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