Merged in xpol/premake-dev (pull request #39)

Add NoWarnings flags support for gcc.

src/tools/gcc.lua

@@ -97,6 +97,7 @@
 		EnableSSE2     = "-msse2",
 		ExtraWarnings  = "-Wall -Wextra",
 		FatalWarnings  = "-Werror",
+		NoWarnings     = "-w",
 		FloatFast      = "-ffast-math",
 		FloatStrict    = "-ffloat-store",
 		NoFramePointer = "-fomit-frame-pointer",

tests/tools/test_gcc.lua

@@ -84,7 +84,17 @@
 		test.isequal({ "-Werror" }, gcc.getcflags(cfg))
 	end
 
+	function suite.cflags_onExtraWarnings()
+		flags { "ExtraWarnings" }
+		prepare()
+		test.isequal({ "-Wall -Wextra" }, gcc.getcflags(cfg))
+	end
 
+	function suite.cflags_onNoWarnings()
+		flags { "NoWarnings" }
+		prepare()
+		test.isequal({ "-w" }, gcc.getcflags(cfg))
+	end
 --
 -- Check the translation of CXXFLAGS.
 --