PowerPC: define _CALL_ELF if compiler does not
This patch makes the configure adds -D_CALL_ELF=1 when compiler does not define _CALL_ELF (versions before powerpc64le support). It cleans up compiler warnings on old compiler where _CALL_ELF is not defined on powerpc64(be) builds. It does by add a new config.make variable for configure-deduced CPPFLAGS and accumulate into that (confix-extra-cppflags). It also generalizes libc_extra_cflags so it accumulates in sysdeps configure fragmenets.
This commit is contained in:
Adhemerval Zanella
parent
8bd70862e1
commit
7ffa942302
14
ChangeLog
14
ChangeLog
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@ -1,3 +1,17 @@
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2014-04-06 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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* Makeconfig (CPPFLAGS): Add config-extra-cppflags to list.
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* config.make.in (config-extra-cppflags): Set it from
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libc_extra_cppflags.
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* configure.ac (libc_extra_cflags): Make it accumulate over
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configure fragments.
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(libc_extra_cppflags): New flag.
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* configure. Regenerate.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/configure.ac
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(libc_cv_ppc64_def_call_elf): Define it to yes if compiler does not set
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_CALL_ELF and add -D_CALL_ELF=1 to libc_extra_cppflags.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/configure: Regenerate.
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2014-04-06 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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[BZ #16815]
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@ -792,7 +792,8 @@ libio-include = -I$(..)libio
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# Note that we can't use -std=* in CPPFLAGS, because it overrides
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# the implicit -lang-asm and breaks cpp behavior for .S files--notably
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# it causes cpp to stop predefining __ASSEMBLER__.
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CPPFLAGS = $(CPPUNDEFS) $(CPPFLAGS-config) $($(subdir)-CPPFLAGS) \
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CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \
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$($(subdir)-CPPFLAGS) \
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$(+includes) $(defines) \
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-include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
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$(CPPFLAGS-$(suffix $@)) \
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@ -37,6 +37,7 @@ cflags-cpu = @libc_cv_cc_submachine@
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asflags-cpu = @libc_cv_cc_submachine@
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config-extra-cflags = @libc_extra_cflags@
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config-extra-cppflags = @libc_extra_cppflags@
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config-cflags-nofma = @libc_cv_cc_nofma@
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defines = @DEFINES@
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@ -591,6 +591,7 @@ libc_cv_slibdir
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old_glibc_headers
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use_nscd
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libc_cv_gcc_unwind_find_fde
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libc_extra_cppflags
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libc_extra_cflags
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CPPUNDEFS
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sizeof_long_double
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@ -7199,9 +7200,9 @@ fi
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$as_echo "$libc_cv_predef_stack_protector" >&6; }
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libc_extra_cflags=
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if test $libc_cv_predef_stack_protector = yes; then
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libc_extra_cflags=-fno-stack-protector
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libc_extra_cflags="$libc_extra_cflags -fno-stack-protector"
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fi
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libc_extra_cppflags=
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker provides __ehdr_start" >&5
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$as_echo_n "checking whether the linker provides __ehdr_start... " >&6; }
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@ -7266,6 +7267,9 @@ $as_echo "running configure fragment for $dir" >&6; }
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fi
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done
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if test x$libc_cv_gcc_unwind_find_fde = xyes; then
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$as_echo "#define EXPORT_UNWIND_FIND_FDE 1" >>confdefs.h
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@ -2042,9 +2042,9 @@ esac],
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])
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libc_extra_cflags=
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if test $libc_cv_predef_stack_protector = yes; then
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libc_extra_cflags=-fno-stack-protector
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libc_extra_cflags="$libc_extra_cflags -fno-stack-protector"
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fi
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AC_SUBST(libc_extra_cflags)
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libc_extra_cppflags=
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AC_CACHE_CHECK([whether the linker provides __ehdr_start],
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libc_cv_ehdr_start, [
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@ -2091,6 +2091,9 @@ for dir in $sysnames; do
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fi
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done
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AC_SUBST(libc_extra_cflags)
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AC_SUBST(libc_extra_cppflags)
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if test x$libc_cv_gcc_unwind_find_fde = xyes; then
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AC_DEFINE(EXPORT_UNWIND_FIND_FDE)
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fi
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@ -163,4 +163,31 @@ default-abi = 64-v2"
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else
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config_vars="$config_vars
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default-abi = 64-v1"
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# Compiler that do not support ELFv2 ABI does not define _CALL_ELF
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler defines _CALL_ELF" >&5
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$as_echo_n "checking whether the compiler defines _CALL_ELF... " >&6; }
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if ${libc_cv_ppc64_def_call_elf+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#ifdef _CALL_ELF
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yes
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#endif
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_ACEOF
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if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
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$EGREP "yes" >/dev/null 2>&1; then :
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libc_cv_ppc64_def_call_elf=yes
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else
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libc_cv_ppc64_def_call_elf=no
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fi
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rm -f conftest*
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ppc64_def_call_elf" >&5
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$as_echo "$libc_cv_ppc64_def_call_elf" >&6; }
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if test $libc_cv_ppc64_def_call_elf = no; then
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libc_extra_cppflags="$libc_extra_cppflags -D_CALL_ELF=1"
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fi
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fi
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@ -12,4 +12,14 @@ if test $libc_cv_ppc64_elfv2_abi = yes; then
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LIBC_CONFIG_VAR([default-abi], [64-v2])
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else
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LIBC_CONFIG_VAR([default-abi], [64-v1])
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# Compiler that do not support ELFv2 ABI does not define _CALL_ELF
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AC_CACHE_CHECK([whether the compiler defines _CALL_ELF],
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[libc_cv_ppc64_def_call_elf],
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[AC_EGREP_CPP(yes,[#ifdef _CALL_ELF
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yes
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#endif
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], libc_cv_ppc64_def_call_elf=yes, libc_cv_ppc64_def_call_elf=no)])
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if test $libc_cv_ppc64_def_call_elf = no; then
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libc_extra_cppflags="$libc_extra_cppflags -D_CALL_ELF=1"
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fi
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fi
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