clang/win: Build chromium code without -Wno-incompatible-pointer-types.

third_party/mesa/mesa.gyp

Index: third_party/mesa/mesa.gyp
diff --git a/third_party/mesa/mesa.gyp b/third_party/mesa/mesa.gyp
index 58c25d2ecf62df85c1766855045d83a925ef662b..903e083976abc42428492e67b5e9839c1ffa8bda 100644
--- a/third_party/mesa/mesa.gyp
+++ b/third_party/mesa/mesa.gyp
@@ -128,6 +128,7 @@
         'clang_warning_flags': [
           '-Wno-tautological-constant-out-of-range-compare',
           '-Wno-mismatched-tags',  # Fixed upstream.
+          '-Wno-incompatible-pointer-types',
         ],
         'clang_warning_flags_unset': [
           # Don't warn about string->bool used in asserts.
@@ -267,6 +268,7 @@
           '-Wno-tautological-constant-out-of-range-compare',
           '-Wno-absolute-value',  # Fires on st_atom_array.c, might be a bug
           '-Wno-mismatched-tags',  # Fixed upstream.
+          '-Wno-incompatible-pointer-types',

[Nico, 2015/07/07 18:25:11]

(mesa is usually very good about fixing warnings we file with them)

[Sam McNally, 2015/07/08 00:52:24]

Looking into this a bit further, this warning is due to yyconst being defined as
const only if being compiled as C++ or C99. Defining YY_USE_CONST also fixes
this. See also
http://cgit.freedesktop.org/mesa/mesa/commit/?id=015e8b6384bbdba8421c5dafd478...

         ],
         'clang_warning_flags_unset': [
           # Don't warn about string->bool used in asserts.