Add fnl build target

third_party/mesa/BUILD.gn

Index: third_party/mesa/BUILD.gn
diff --git a/third_party/mesa/BUILD.gn b/third_party/mesa/BUILD.gn
index acdca8616273962c6b81f55e89cd44e26f4465cd..9ff2ce490e149b00274099fecffddc59958621ab 100644
--- a/third_party/mesa/BUILD.gn
+++ b/third_party/mesa/BUILD.gn
@@ -3,6 +3,9 @@
 # found in the LICENSE file.
 
 import("//build/config/ui.gni")
+if (is_posix) {

[viettrungluu, 2015/09/15 23:48:23]

&& !is_clang?

Or maybe even just |if (!is_clang)|?

[cdotstout, 2015/09/16 22:01:00]

Copied this from build/config/compiler/BUILD.gn so it should probably be changed
in both places.

+  import("//build/config/gcc/gcc_version.gni")
+}
 
 config("mesa_headers_config") {
   include_dirs = [ "src/include" ]
@@ -80,6 +83,8 @@ config("mesa_internal_config") {
 
   if (is_clang) {
     cflags += [ "-Wno-tautological-constant-out-of-range-compare" ]
+  } else if (gcc_version >= 48) {
+    cflags += [ "-Wno-narrowing" ]
   }
 
   if (is_android) {