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PowerPC: define _CALL_ELF if compiler does not

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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
2014-04-06 16:26:32 -05:00
parent 8bd70862e1
commit 7ffa942302
7 changed files with 65 additions and 5 deletions
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27
sysdeps/unix/sysv/linux/powerpc/powerpc64/configure vendored
View File

@ -163,4 +163,31 @@ default-abi = 64-v2"
else
config_vars="$config_vars
default-abi = 64-v1"
# Compiler that do not support ELFv2 ABI does not define _CALL_ELF
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler defines _CALL_ELF" >&5
$as_echo_n "checking whether the compiler defines _CALL_ELF... " >&6; }
if ${libc_cv_ppc64_def_call_elf+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#ifdef _CALL_ELF
yes
#endif
_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
$EGREP "yes" >/dev/null 2>&1; then :
libc_cv_ppc64_def_call_elf=yes
else
libc_cv_ppc64_def_call_elf=no
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ppc64_def_call_elf" >&5
$as_echo "$libc_cv_ppc64_def_call_elf" >&6; }
if test $libc_cv_ppc64_def_call_elf = no; then
libc_extra_cppflags="$libc_extra_cppflags -D_CALL_ELF=1"
fi
fi

10
sysdeps/unix/sysv/linux/powerpc/powerpc64/configure.ac
View File

@ -12,4 +12,14 @@ if test $libc_cv_ppc64_elfv2_abi = yes; then
LIBC_CONFIG_VAR([default-abi], [64-v2])
else
LIBC_CONFIG_VAR([default-abi], [64-v1])
# Compiler that do not support ELFv2 ABI does not define _CALL_ELF
AC_CACHE_CHECK([whether the compiler defines _CALL_ELF],
[libc_cv_ppc64_def_call_elf],
[AC_EGREP_CPP(yes,[#ifdef _CALL_ELF
yes
#endif
], libc_cv_ppc64_def_call_elf=yes, libc_cv_ppc64_def_call_elf=no)])
if test $libc_cv_ppc64_def_call_elf = no; then
libc_extra_cppflags="$libc_extra_cppflags -D_CALL_ELF=1"
fi
fi