From 1c4fa240bec959fd23f4826d9aa9e624fa48d01a Mon Sep 17 00:00:00 2001 From: Yang Tse Date: Thu, 18 Nov 2010 17:12:15 +0100 Subject: [PATCH] configure: use autobuilds to temporarily verify strict aliasing warnings. Temporarily, When cross-compiling with gcc 3.0 or later, enable strict aliasing rules and warnings. Given that cross-compiled targets autobuilds do not run the --- m4/curl-compilers.m4 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4 index 413293b10..44998c06e 100644 --- a/m4/curl-compilers.m4 +++ b/m4/curl-compilers.m4 @@ -935,6 +935,11 @@ AC_DEFUN([CURL_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