From 1448bdf1c0995e3ac2e0f97c51e5e2d73eded8e0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Fonseca?= Date: Fri, 14 Oct 2011 18:28:55 +0100 Subject: [PATCH] configure: Use -fno-builtin-memcmp. Issue spotted by Adam Jackson . http://lists.freedesktop.org/archives/mesa-dev/2011-June/009077.html --- configure.ac | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/configure.ac b/configure.ac index 49e81ad17c6..ae7b36b85ce 100644 --- a/configure.ac +++ b/configure.ac @@ -172,6 +172,10 @@ if test "x$GCC" = xyes; then # Work around aliasing bugs - developers should comment this out CFLAGS="$CFLAGS -fno-strict-aliasing" + + # gcc's builtin memcmp is slower than glibc's + # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43052 + CFLAGS="$CFLAGS -fno-builtin-memcmp" fi if test "x$GXX" = xyes; then CXXFLAGS="$CXXFLAGS -Wall" @@ -191,6 +195,10 @@ if test "x$GXX" = xyes; then # Work around aliasing bugs - developers should comment this out CXXFLAGS="$CXXFLAGS -fno-strict-aliasing" + + # gcc's builtin memcmp is slower than glibc's + # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43052 + CXXFLAGS="$CXXFLAGS -fno-builtin-memcmp" fi dnl even if the compiler appears to support it, using visibility attributes isn't -- 2.30.2