In build/gyp_chromium, if CHROMIUM_GYP_SYNTAX_CHECK is set to 1, run gyp with --check.

build/gyp_chromium

Index: build/gyp_chromium
diff --git a/build/gyp_chromium b/build/gyp_chromium
index c955e39a7c1995bf80ec9ddbc9a1e7df0de19967..9c87e82f16a982893528cf87c253f975d33f6795 100755
--- a/build/gyp_chromium
+++ b/build/gyp_chromium
@@ -82,6 +82,12 @@ if __name__ == '__main__':
   if sys.platform != 'darwin':
     args.append('--no-circular-check')
 
+  # If CHROMIUM_GYP_SYNTAX_CHECK is set to 1, it will invoke gyp with --check
+  # to enfore syntax checking.
+  syntax_check = os.environ.get('CHROMIUM_GYP_SYNTAX_CHECK')
+  if syntax_check and int(syntax_check):

[Mark Mentovai, 2010/03/26 17:53:45]

bool() is marginally closer to what you mean than int() and the effect is the
same.

[Robert Sesek, 2010/03/26 17:57:35]

That's what I thought, too. But |bool("0") == True| as does bool("1"). |bool(0)
== False|, though.

+    args.append('--check')
+
   print 'Updating projects from gyp files...'
   sys.stdout.flush()