[Mesa-dev] [PATCH 1/2] configure: allow C{,XX}FLAGS override

[Marcin Baczyński]

---

 Without this patch CFLAGS=-fstrict-aliasing ./autogen.sh ... has no effect,
 as the flag is followed by -fno-strict-aliasing added by configure.

 configure.ac |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/configure.ac b/configure.ac
index eace790..ef9f4b2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,6 +17,10 @@ AC_INIT([Mesa],[mesa_version],
 AC_CONFIG_AUX_DIR([bin])
 AC_CANONICAL_HOST
 
+dnl Save user CFLAGS and CXXFLAGS so one can override the default ones
+USER_CFLAGS="$CFLAGS"
+USER_CXXFLAGS="$CXXFLAGS"
+
 dnl Versions for external dependencies
 LIBDRM_REQUIRED=2.4.24
 LIBDRM_RADEON_REQUIRED=2.4.24
@@ -1906,6 +1910,10 @@ dnl Restore LDFLAGS and CPPFLAGS
 LDFLAGS="$_SAVE_LDFLAGS"
 CPPFLAGS="$_SAVE_CPPFLAGS"
 
+dnl Add user CFLAGS and CXXFLAGS
+CFLAGS="$CFLAGS $USER_CFLAGS"
+CXXFLAGS="$CXXFLAGS $USER_CXXFLAGS"
+
 dnl Substitute the config
 AC_CONFIG_FILES([configs/autoconf])
 
-- 
1.7.6