Andrew Coppin wrote:
Like that time yesterday, I compiled from program and got a weird message about GHC about "ignored trigraphs" or something... What the heck is a trigraph?
Everyone's favorite obscure feature of the ANSI C99 preprocessor. Probably you had something like "this is odd???" in your source code, and were using -cpp.
Er... wow. OK, well I have no idea what happened there... (I'm not using -cpp. I don't even know what it is.) I had presumed GHC was upset because it got killed on the previous run... (I was running something else and it locked up the PC.)
Since you are after increasing your program's performance, maybe you are using -fvia-c or chose an optimization level high enough that GHC decides for itself to go via C. The message is very most probably from the C compiler. You could try passing the C compiler an appropriate flag (see gcc manual) via a ghc command line option (which I am too lazy to look up). Cheers Ben