diff options
| -rw-r--r-- | m4/cares-compilers.m4 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/m4/cares-compilers.m4 b/m4/cares-compilers.m4 index 3a57389..695c82a 100644 --- a/m4/cares-compilers.m4 +++ b/m4/cares-compilers.m4 @@ -931,6 +931,11 @@ AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [ dnl Also, on gcc 4.0.X it is totally unbearable and complains all dnl over making it unusable for generic purposes. Let's not use it. tmp_CFLAGS="$tmp_CFLAGS" + dnl When cross-compiling with gcc 3.0 or later, + dnl enable strict aliasing rules and warnings. + if test "x$cross_compiling" = "xyes"; then + tmp_CFLAGS="$tmp_CFLAGS -fstrict-aliasing -Wstrict-aliasing=2" + fi fi # dnl Only gcc 3.3 or later |