X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=configure.ac;h=be9674a0c1db42121b2734cc324f62c786f2347f;hb=29283921b72fa9386322fc9eb301d00e88b634b6;hp=156fb15fd3d51ce48703be6cefc5fe305dc1e7be;hpb=a8bed38b54a22450960e4ff2ca1e30d8cf33c141;p=mesa.git

diff --git a/configure.ac b/configure.ac
index 156fb15fd3d..be9674a0c1d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -297,6 +297,12 @@ esac
 
 AM_CONDITIONAL(HAVE_ANDROID, test "x$android" = xyes)
 
+# Toggle Werror since at some point clang started treating unknown -W
+# flags as warnings, succeeding with the build, yet issuing an annoying
+# warning.
+save_CFLAGS="$CFLAGS"
+export CFLAGS="$CFLAGS -Werror"
+
 dnl
 dnl Check compiler flags
 dnl
@@ -312,6 +318,11 @@ AX_CHECK_COMPILE_FLAG([-fno-math-errno],                       [CFLAGS="$CFLAGS
 AX_CHECK_COMPILE_FLAG([-fno-trapping-math],                    [CFLAGS="$CFLAGS -fno-trapping-math"])
 AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],                   [VISIBILITY_CFLAGS="-fvisibility=hidden"])
 
+CFLAGS="$save_CFLAGS"
+
+# Toggle Werror since at some point clang started treating unknown -W
+# flags as warnings, succeeding with the build, yet issuing an annoying
+# warning.
 dnl
 dnl Check C++ compiler flags
 dnl