Before:

130113 files processed
7304 have lexer/parser warnings
332 build impossible
9742 build warning
49779 build dist suspicious
38666 build dist suspicious warning
11834 build dist inexcusable

After:

130113 files processed
7304 have lexer/parser warnings
332 build impossible
10063 build warning
49779 build dist suspicious
38666 build dist suspicious warning
11834 build dist inexcusable

i.e. 321 build warnings on all Hackage

Examples:

NO_DEBUG_MODE                       -- forgotten -D?
-traditional                        -- doesn't work, nor needed
-fallow-undecidable-instances       -- wrong -options?
-fno-exceptions
-Wall
-Werror
--include=include/config.h          -- doesn't work
-maes                               -- cpp is not C++ ?
-mpclmul
-mssse3