EvilLinker stage 2

Build/EvilLinker.hs

@@ -19,10 +19,12 @@ import Control.Monad
 
 import Utility.Monad
 import Utility.Process
+import System.Directory
 
-data CmdParams = CmdParams String String
+data CmdParams = CmdParams { cmd :: String, opts :: String }
 	deriving (Show)
 
+{- Find where ghc calls gcc to link the executable. -}
 parseGhcLink :: Parser CmdParams
 parseGhcLink = do
 	many prelinklines
@@ -40,6 +42,14 @@ parseGhcLink = do
 		notFollowedBy linkheaderline
 		restOfLine
 
+{- Find where gcc calls collect1. -}
+parseCollect1 :: Parser CmdParams
+parseCollect1 = error "TODO"
+	
+{- Find where collect1 calls ld. -}
+parseLd :: Parser CmdParams
+parseLd = error "TODO"
+
 restOfLine :: Parser String
 restOfLine = newline `after` many (noneOf "\n")
 
@@ -54,7 +64,21 @@ getOutput cmd params = do
 runParser' :: Parser a -> String -> a
 runParser' p s = either (error . show) id (parse p "" s)
 
+atFile :: FilePath -> String
+atFile f = '@':f
+
+runAtFile :: Parser CmdParams -> String -> FilePath -> [String] -> IO String
+runAtFile p s f extraparams = do
+	writeFile f (opts c)
+	out <- getOutput (cmd c) (atFile f:extraparams)
+	removeFile f
+	return out
+  where
+ 	c = runParser' p s
+
 main = do
 	ghcout <- getOutput "cabal"
 		["build", "--ghc-options=-v -keep-tmp-files"]
-	print $ runParser' parseGhcLink ghcout
+	gccout <- runAtFile parseGhcLink ghcout "gcc.opt" ["-v"]
+	collect1out <- runAtFile parseCollect1 gccout "collect1.opt" ["-v"]
+	void $ runAtFile parseLd collect1out "ld.opt" []