[project @ 2003-07-21 15:14:18 by ross]

[ghc-hetmet.git] / ghc / compiler / main / DriverMkDepend.hs

diff --git a/ghc/compiler/main/DriverMkDepend.hs b/ghc/compiler/main/DriverMkDepend.hs
index c6d3290..f01faf3 100644 (file)
--- a/ghc/compiler/main/DriverMkDepend.hs
+++ b/ghc/compiler/main/DriverMkDepend.hs
@@ -1,5 +1,5 @@
 -----------------------------------------------------------------------------
--- $Id: DriverMkDepend.hs,v 1.26 2002/11/08 12:52:51 simonmar Exp $
+-- $Id: DriverMkDepend.hs,v 1.30 2003/07/18 13:18:07 simonmar Exp $
 --
 -- GHC Driver
 --
@@ -11,14 +11,16 @@ module DriverMkDepend where
 
 #include "HsVersions.h"
 
+import GetImports      ( getImports )
 import DriverState      
-import DriverUtil       ( add, softGetDirectoryContents, replaceFilenameSuffix )
+import DriverUtil
 import DriverFlags
 import SysTools                ( newTempName )
 import qualified SysTools
 import Module          ( ModuleName, ModLocation(..),
                          moduleNameUserString, isHomeModule )
-import Finder          ( findModule, hiBootExt, hiBootVerExt )
+import Finder          ( findModule, hiBootExt, hiBootVerExt,
+                         mkHomeModLocation )
 import Util             ( global )
 import Panic
 
@@ -128,6 +130,68 @@ beginMkDependHS = do
   return ()
 
 
+doMkDependHSPhase basename suff input_fn
+ = do src <- readFile input_fn
+      let (import_sources, import_normals, mod_name) = getImports src
+      let orig_fn = basename ++ '.':suff
+      (_, location') <- mkHomeModLocation mod_name orig_fn
+
+      -- take -ohi into account if present
+      ohi <- readIORef v_Output_hi
+      let location | Just fn <- ohi = location'{ ml_hi_file = fn }
+                  | otherwise      = location'
+
+      deps_sources <- mapM (findDependency True  orig_fn) import_sources
+      deps_normals <- mapM (findDependency False orig_fn) import_normals
+      let deps = deps_sources ++ deps_normals
+
+      osuf <- readIORef v_Object_suf
+      extra_suffixes <- readIORef v_Dep_suffixes
+      let suffixes = map (++ ('_':osuf)) extra_suffixes
+         obj_file = ml_obj_file location
+          objs = obj_file : map (replaceFilenameSuffix obj_file) suffixes
+
+       -- Handle for file that accumulates dependencies 
+      hdl <- readIORef v_Dep_tmp_hdl
+
+       -- std dependency of the object(s) on the source file
+      hPutStrLn hdl (unwords (map escapeSpaces objs) ++ " : " ++
+                    escapeSpaces (basename ++ '.':suff))
+
+      let genDep (dep, False {- not an hi file -}) = 
+            hPutStrLn hdl (unwords (map escapeSpaces objs) ++ " : " ++
+                           escapeSpaces dep)
+          genDep (dep, True  {- is an hi file -}) = do
+            hisuf <- readIORef v_Hi_suf
+            let dep_base = remove_suffix '.' dep
+                deps = (dep_base ++ hisuf)
+                       : map (\suf -> dep_base ++ suf ++ '_':hisuf) extra_suffixes
+                 -- length objs should be == length deps
+            sequence_ (zipWith (\o d -> hPutStrLn hdl (escapeSpaces o ++ " : " ++ escapeSpaces d)) objs deps)
+
+      sequence_ (map genDep [ d | Just d <- deps ])
+      return location
+
+-- add the lines to dep_makefile:
+          -- always:
+                  -- this.o : this.hs
+
+          -- if the dependency is on something other than a .hi file:
+                  -- this.o this.p_o ... : dep
+          -- otherwise
+                  -- if the import is {-# SOURCE #-}
+                          -- this.o this.p_o ... : dep.hi-boot[-$vers]
+                          
+                  -- else
+                          -- this.o ...   : dep.hi
+                          -- this.p_o ... : dep.p_hi
+                          -- ...
+   
+          -- (where .o is $osuf, and the other suffixes come from
+          -- the cmdline -s options).
+   
+
+
 endMkDependHS :: IO ()
 endMkDependHS = do
   makefile     <- readIORef v_Dep_makefile
@@ -173,7 +237,7 @@ findDependency is_source src imp = do
       else do
        r <- findModule imp
        case r of 
-          Just (mod,loc)
+          Right (mod,loc)
                -- not in this package: we don't need a dependency
                | not (isHomeModule mod) && not include_prelude
                -> return Nothing
@@ -198,6 +262,6 @@ findDependency is_source src imp = do
                           then return (Just (boot_hi_file, not is_source))
                           else return (Just (hi_file, not is_source))
 
-          Nothing -> throwDyn (ProgramError 
+          Left _ -> throwDyn (ProgramError 
                (src ++ ": " ++ "can't locate import `" ++ imp_mod ++ "'" ++
                 if is_source then " (SOURCE import)" else ""))