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Use -Wformat-security when available

This commit is contained in:
Peter Eisentraut 2011-01-27 01:23:48 +02:00
parent 6fe5e4e63e
commit 8b6f5f2510
2 changed files with 60 additions and 0 deletions
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58
configure vendored
View File

@ -4117,6 +4117,64 @@ if test x"$pgac_cv_prog_cc_cflags__Wendif_labels" = x"yes"; then
CFLAGS="$CFLAGS -Wendif-labels"
fi
# This was included in -Wall/-Wformat in older GCC versions
{ $as_echo "$as_me:$LINENO: checking whether $CC supports -Wformat-security" >&5
$as_echo_n "checking whether $CC supports -Wformat-security... " >&6; }
if test "${pgac_cv_prog_cc_cflags__Wformat_security+set}" = set; then
$as_echo_n "(cached) " >&6
else
pgac_save_CFLAGS=$CFLAGS
CFLAGS="$pgac_save_CFLAGS -Wformat-security"
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
(eval "$ac_compile") 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
$as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } && {
test -z "$ac_c_werror_flag" ||
test ! -s conftest.err
} && test -s conftest.$ac_objext; then
pgac_cv_prog_cc_cflags__Wformat_security=yes
else
$as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
pgac_cv_prog_cc_cflags__Wformat_security=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
CFLAGS="$pgac_save_CFLAGS"
fi
{ $as_echo "$as_me:$LINENO: result: $pgac_cv_prog_cc_cflags__Wformat_security" >&5
$as_echo "$pgac_cv_prog_cc_cflags__Wformat_security" >&6; }
if test x"$pgac_cv_prog_cc_cflags__Wformat_security" = x"yes"; then
CFLAGS="$CFLAGS -Wformat-security"
fi
# Disable strict-aliasing rules; needed for gcc 3.3+
{ $as_echo "$as_me:$LINENO: checking whether $CC supports -fno-strict-aliasing" >&5
$as_echo_n "checking whether $CC supports -fno-strict-aliasing... " >&6; }

2
configure.in
View File

@ -429,6 +429,8 @@ if test "$GCC" = yes -a "$ICC" = no; then
# These work in some but not all gcc versions
PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
# This was included in -Wall/-Wformat in older GCC versions
PGAC_PROG_CC_CFLAGS_OPT([-Wformat-security])
# Disable strict-aliasing rules; needed for gcc 3.3+
PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
# Disable optimizations that assume no overflow; needed for gcc 4.3+