dnl MULTIBYTE_ENABLED having already been set.
NMH_ADDL_CPPFLAGS
-if test "$GCC" = yes; then
- dnl Do this regardless of auto_cflags value.
- dnl Enable _FORTIFY_SOURCE checking, which is supported by
- dnl gcc 4.1 and later, but only when optimization is enabled.
- dnl It shouldn't hurt with earlier versions because it's a cpp macro.
- dnl If the user configures with a CFLAGS that contains a -O flag
- dnl but then removes it a make time, they'll also have to remove
- dnl -D_FORTIFY_SOURCE from CPPFLAGS because it requires optimization.
- dnl Use "\ " instead of ' ' or " " for compatiblity with posh.
- AS_CASE([$CFLAGS],
- [-O|*\ -O|-O[[!0]]*|*\ -O[[!0]]*],
- [CPPFLAGS="${CPPFLAGS:+$CPPFLAGS }-D_FORTIFY_SOURCE=2"])
-fi
-
dnl FreeBSD needs a bit of magic to bring getline() into scope.
dnl We do this here rather than in (say) h/mh.h because this macro must
dnl be defined before <stdio.h> is pulled in.