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Remove configure tests for assembler CFI support.

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This patch removes configure tests for assembler CFI support (and
thereby eliminates an architecture-specific case in the main
configure.ac), instead assuming that support is present
unconditionally.

The main test was added in 2003 around the time CFI support was added
to the assembler.  cfi_personality and cfi_lsda support were added to
the assembler in 2006.  cfi_sections support was added in 2009, a few
weeks before binutils 2.20 was released; it's in 2.20, the minimum
supported version, so even that configure test is obsolete.

Tested x86_64 that the installed shared libraries are unchanged by
this patch.

	* configure.ac (libc_cv_asm_cfi_directives): Remove configure
	test.
	* configure: Regenerated.
	* config.h.in (HAVE_ASM_CFI_DIRECTIVES): Remove macro undefine.
	* sysdeps/arm/configure.ac (libc_cv_asm_cfi_directive_sections):
	Remove configure test.
	* sysdeps/arm/configure: Regenerated.
	* sysdeps/nptl/configure.ac: Do not check
	libc_cv_asm_cfi_directives.
	* sysdeps/nptl/configure: Regenerated.
	* sysdeps/x86_64/nptl/configure.ac: Remove file.
	* sysdeps/x86_64/nptl/configure: Remove generated file.
	* b/sysdeps/generic/sysdep.h [HAVE_ASM_CFI_DIRECTIVES]: Make code
	unconditional.
	[!HAVE_ASM_CFI_DIRECTIVES]: Remove conditional code.
This commit is contained in:
Joseph Myers
2014-06-26 17:33:32 +00:00
parent 059bf913b5
commit a8779c28a8
11 changed files with 57 additions and 246 deletions
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29
sysdeps/arm/configure vendored
View File

@@ -3,35 +3,6 @@
#AC_DEFINE(PI_STATIC_AND_HIDDEN)
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the CFI directive .cfi_sections is supported" >&5
$as_echo_n "checking whether the CFI directive .cfi_sections is supported... " >&6; }
if ${libc_cv_asm_cfi_directive_sections+:} false; then :
$as_echo_n "(cached) " >&6
else
cat > conftest.s <<EOF
.text
.cfi_sections .debug_frame, .eh_frame
.cfi_startproc
.cfi_endproc
EOF
if { ac_try='${CC-cc} $ASFLAGS -c conftest.s 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then
libc_cv_asm_cfi_directive_sections=yes
else
libc_cv_asm_cfi_directive_sections=no
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_cfi_directive_sections" >&5
$as_echo "$libc_cv_asm_cfi_directive_sections" >&6; }
if test $libc_cv_asm_cfi_directive_sections != yes; then
as_fn_error $? "need .cfi_sections in this configuration" "$LINENO" 5
fi
# We check to see if the compiler and flags are
# selecting the hard-float ABI and if they are then
# we set libc_cv_arm_pcs_vfp to yes which causes