X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FDriverMkDepend.hs;h=769d9a272e98917d449d3460338f5e524ab3d2a1;hb=70b6c54b3c140d96b69287f8f400f88a0b7e9c18;hp=607ba78d2896ccd6203fd59e6f9f1a35daaead0b;hpb=fb1b5b0773c7efd0fba32e580afd91f99b9fcc89;p=ghc-hetmet.git

diff --git a/ghc/compiler/main/DriverMkDepend.hs b/ghc/compiler/main/DriverMkDepend.hs
index 607ba78..769d9a2 100644
--- a/ghc/compiler/main/DriverMkDepend.hs
+++ b/ghc/compiler/main/DriverMkDepend.hs
@@ -1,5 +1,5 @@
 -----------------------------------------------------------------------------
--- $Id: DriverMkDepend.hs,v 1.23 2002/09/18 10:51:01 simonmar Exp $
+-- $Id: DriverMkDepend.hs,v 1.28 2003/06/04 15:47:58 simonmar Exp $
 --
 -- GHC Driver
 --
@@ -11,18 +11,19 @@ module DriverMkDepend where
 
 #include "HsVersions.h"
 
+import GetImports	( getImports )
 import DriverState      
-import DriverUtil       ( add, softGetDirectoryContents )
+import DriverUtil
 import DriverFlags
 import SysTools		( newTempName )
 import qualified SysTools
 import Module		( ModuleName, ModLocation(..),
 			  moduleNameUserString, isHomeModule )
-import Finder		( findModuleDep )
+import Finder		( findModule, hiBootExt, hiBootVerExt )
 import Util             ( global )
 import Panic
 
-import DATA_IOREF	( IORef, newIORef, readIORef, writeIORef )
+import DATA_IOREF	( IORef, readIORef, writeIORef )
 import EXCEPTION
 
 import Directory
@@ -128,6 +129,63 @@ beginMkDependHS = do
   return ()
 
 
+doMkDependHSPhase basename suff input_fn
+ = do src <- readFile input_fn
+      let (import_sources, import_normals, _) = getImports src
+      let orig_fn = basename ++ '.':suff
+      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 = osuf : map (++ ('_':osuf)) extra_suffixes
+          ofiles = map (\suf -> basename ++ '.':suf) suffixes
+
+      objs <- mapM odir_ify ofiles
+
+	-- 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 True
+
+-- 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
@@ -171,13 +229,33 @@ findDependency is_source src imp = do
    if imp_mod `elem` excl_mods 
       then return Nothing
       else do
-	r <- findModuleDep imp is_source
+	r <- findModule imp
 	case r of 
-	   Just (mod,loc)
-		| isHomeModule mod || include_prelude
+	   Right (mod,loc)
+		-- not in this package: we don't need a dependency
+		| not (isHomeModule mod) && not include_prelude
+		-> return Nothing
+
+		-- normal import: just depend on the .hi file
+		| not is_source
 		-> return (Just (ml_hi_file loc, not is_source))
+
+		-- if it's a source import, we want to generate a dependency
+		-- on the .hi-boot file, not the .hi file
 		| otherwise
-		-> return Nothing
-	   Nothing -> throwDyn (ProgramError 
+		-> let hi_file = ml_hi_file loc
+		       boot_hi_file = replaceFilenameSuffix hi_file hiBootExt 
+		       boot_ver_hi_file = replaceFilenameSuffix hi_file hiBootVerExt 
+		   in do
+		   b <- doesFileExist boot_ver_hi_file
+		   if b 
+		     then return (Just (boot_ver_hi_file, not is_source))
+		     else do
+		        b <- doesFileExist boot_hi_file
+		   	if b 
+			   then return (Just (boot_hi_file, not is_source))
+		   	   else return (Just (hi_file, not is_source))
+
+	   Left _ -> throwDyn (ProgramError 
 		(src ++ ": " ++ "can't locate import `" ++ imp_mod ++ "'" ++
 		 if is_source then " (SOURCE import)" else ""))