output-dir.

Check.hs

@@ -1,9 +1,12 @@
 module Check (checkSyntax) where
 
 import Control.Applicative
+import Control.Monad
 import Data.Char
 import Data.List
 import Param
+import System.Directory
+import System.FilePath
 import System.IO
 import System.Process
 
@@ -11,7 +14,8 @@ import System.Process
 
 checkSyntax :: Options -> String -> IO String
 checkSyntax opt file = do
-    (_,_,herr,_) <- runInteractiveProcess (ghc opt) ["--make","-Wall",file] Nothing Nothing
+    makeDirectory (outDir opt)
+    (_,_,herr,_) <- runInteractiveProcess (ghc opt) ["--make","-Wall",file,"-outputdir","dist/flymake","-o","dist/flymake/a.out"] Nothing Nothing
     refine <$> hGetContents herr
   where
    refine = unfoldLines start . map (dropWhile isSpace) . filter (/="") . lines
@@ -25,3 +29,16 @@ unfoldLines p (x:xs) = x ++ unfold xs
     unfold (l:ls)
       | p l       = ('\n':l) ++ unfold ls
       | otherwise = (' ' :l) ++ unfold ls
+
+----------------------------------------------------------------
+
+makeDirectory :: FilePath -> IO ()
+makeDirectory dir = makeDirectoryRecur $ normalise dir
+  where
+    makeDirectoryRecur "" = return ()
+    makeDirectoryRecur cur = do
+      exist <- doesDirectoryExist cur
+      let par = takeDirectory cur
+      unless exist $ do
+          makeDirectoryRecur par
+          createDirectory cur

GHCMod.hs

@@ -27,6 +27,7 @@ defaultOptions = Options { convert = toPlain
                          , ghc     = "ghc"
                          , ghci    = "ghci"
                          , ghcPkg  = "ghc-pkg"
+                         , outDir  = "dist/flymake"
                          }
 
 argspec :: [OptDescr (Options -> Options)]
@@ -42,6 +43,9 @@ argspec = [ Option ['l'] ["tolisp"]
           , Option ['p'] ["ghc-pkg"]
             (ReqArg (\str opts -> opts { ghcPkg = str }) "ghc-pkg")
             "ghc-pkg path"
+          , Option ['o'] ["output-dir"]
+            (ReqArg (\str opts -> opts { outDir = str }) "dist/flymake")
+            "output directory"
           ]
 
 parseArgs :: [OptDescr (Options -> Options)] -> [String] -> (Options, [String])

Param.hs

@@ -4,5 +4,6 @@ data Options   = Options { convert :: [String] -> String
                          , ghc     :: FilePath
                          , ghci    :: FilePath
                          , ghcPkg  :: FilePath
+                         , outDir  :: FilePath
                          }
 

elisp/ghc-flymake.el

@@ -13,12 +13,20 @@
 	     ghc-flymake-err-line-patterns)
 
 (defun ghc-flymake-init ()
-  (let* ((temp-file (flymake-init-create-temp-buffer-copy
+  (let ((file (file-name-nondirectory (buffer-file-name))))
-                     'flymake-create-temp-inplace))
+    (flymake-init-create-temp-buffer-copy 'flymake-create-temp-inplace)
-         (local-file (file-relative-name
+    (list ghc-module-command (append (ghc-module-command-args)
-                      temp-file
+				     (list "check" file)))))
-                      (file-name-directory buffer-file-name))))
+
-    (list "ghc-mod" (append (ghc-module-command-args)
+;; ghc --make GHCMod.hs -outputdir dist/flymake -o dist/flymake/GHCMod
-			    (list "check" local-file)))))
+
+;; (defun ghc-flymake-init ()
+;;   (let* ((temp-file (flymake-init-create-temp-buffer-copy
+;;                      'flymake-create-temp-inplace))
+;;          (local-file (file-relative-name
+;;                       temp-file
+;;                       (file-name-directory buffer-file-name))))
+;;     (list ghc-module-command (append (ghc-module-command-args)
+;; 			                (list "check" local-file)))))
 
 (provide 'ghc-flymake)