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configure.ac: If the compiler supports -Qunused-arguments...

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* configure.ac: If the compiler supports -Qunused-arguments, use
	it when running the compiler on .s files.
	* configure: Regenerated.

From-SVN: r216268
This commit is contained in:
Ian Lance Taylor 2014-10-15 15:32:41 +00:00 committed by Ian Lance Taylor
parent 9e98c8c32c
commit bb8c2886db
3 changed files with 57 additions and 0 deletions
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6
libffi/ChangeLog
View File

@ -1,3 +1,9 @@
2014-10-15 Ian Lance Taylor <iant@google.com>
* configure.ac: If the compiler supports -Qunused-arguments, use
it when running the compiler on .s files.
* configure: Regenerated.
2014-09-11 Jakub Jelinek <jakub@redhat.com>
* src/powerpc/linux64.S: Emit .note.GNU-stack even when

32
libffi/configure vendored
View File

@ -12519,6 +12519,28 @@ $as_echo "#define HAVE_AS_CFI_PSEUDO_OP 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler supports -Qunused-arguments" >&5
$as_echo_n "checking if compiler supports -Qunused-arguments... " >&6; }
if test "${libffi_cv_c_unused_arguments+set}" = set; then :
$as_echo_n "(cached) " >&6
else
CFLAGS_hold=$CFLAGS
CFLAGS="$CFLAGS -Qunused-arguments"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int i;
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
libffi_cv_c_unused_arguments=yes
else
libffi_cv_c_unused_arguments=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
CFLAGS=$CFLAGS_hold
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libffi_cv_c_unused_arguments" >&5
$as_echo "$libffi_cv_c_unused_arguments" >&6; }
if test x$TARGET = xSPARC; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler and linker support unaligned pc related relocs" >&5
$as_echo_n "checking assembler and linker support unaligned pc related relocs... " >&6; }
@ -12604,9 +12626,14 @@ else
libffi_cv_as_x86_pcrel=yes
echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
CFLAGS_hold=$CFLAGS
if test "$libffi_cv_c_unused_arguments" = yes; then
CFLAGS="$CFLAGS -Qunused-arguments"
fi
if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
libffi_cv_as_x86_pcrel=no
fi
CFLAGS=$CFLAGS_hold
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libffi_cv_as_x86_pcrel" >&5
@ -12732,9 +12759,14 @@ else
libffi_cv_as_x86_64_unwind_section_type=yes
echo '.section .eh_frame,"a",@unwind' > conftest.s
CFLAGS_hold=$CFLAGS
if test "$libffi_cv_c_unused_arguments" = yes; then
CFLAGS="$CFLAGS -Qunused-arguments"
fi
if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
libffi_cv_as_x86_64_unwind_section_type=no
fi
CFLAGS=$CFLAGS_hold
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libffi_cv_as_x86_64_unwind_section_type" >&5

19
libffi/configure.ac
View File

@ -295,6 +295,15 @@ AC_C_BIGENDIAN
GCC_AS_CFI_PSEUDO_OP
AC_CACHE_CHECK([if compiler supports -Qunused-arguments],
[libffi_cv_c_unused_arguments],
[CFLAGS_hold=$CFLAGS
CFLAGS="$CFLAGS -Qunused-arguments"
AC_COMPILE_IFELSE([[int i;]],
[libffi_cv_c_unused_arguments=yes],
[libffi_cv_c_unused_arguments=no])
CFLAGS=$CFLAGS_hold])
if test x$TARGET = xSPARC; then
AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
libffi_cv_as_sparc_ua_pcrel, [
@ -331,9 +340,14 @@ if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64
libffi_cv_as_x86_pcrel, [
libffi_cv_as_x86_pcrel=yes
echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
CFLAGS_hold=$CFLAGS
if test "$libffi_cv_c_unused_arguments" = yes; then
CFLAGS="$CFLAGS -Qunused-arguments"
fi
if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
libffi_cv_as_x86_pcrel=no
fi
CFLAGS=$CFLAGS_hold
])
if test "x$libffi_cv_as_x86_pcrel" = xyes; then
AC_DEFINE(HAVE_AS_X86_PCREL, 1,
@ -397,9 +411,14 @@ if test x$TARGET = xX86_64; then
libffi_cv_as_x86_64_unwind_section_type, [
libffi_cv_as_x86_64_unwind_section_type=yes
echo '.section .eh_frame,"a",@unwind' > conftest.s
CFLAGS_hold=$CFLAGS
if test "$libffi_cv_c_unused_arguments" = yes; then
CFLAGS="$CFLAGS -Qunused-arguments"
fi
if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
libffi_cv_as_x86_64_unwind_section_type=no
fi
CFLAGS=$CFLAGS_hold
])
if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,