X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FDriverMkDepend.hs;h=bb00efef4588ac593942950d8bcd42f3aeba9b75;hb=ec1c2c022c729c9efe695d540dd585a5b2b08bab;hp=5a2f62975c41143ac70a4da362a59b8654894d12;hpb=c7eeb7113387ae4d3adc5a02eba441de335a9031;p=ghc-hetmet.git diff --git a/ghc/compiler/main/DriverMkDepend.hs b/ghc/compiler/main/DriverMkDepend.hs index 5a2f629..bb00efe 100644 --- a/ghc/compiler/main/DriverMkDepend.hs +++ b/ghc/compiler/main/DriverMkDepend.hs @@ -1,5 +1,5 @@ ----------------------------------------------------------------------------- --- $Id: DriverMkDepend.hs,v 1.17 2002/02/05 14:42:08 simonpj Exp $ +-- $Id: DriverMkDepend.hs,v 1.41 2005/02/15 11:24:51 simonmar Exp $ -- -- GHC Driver -- @@ -7,85 +7,106 @@ -- ----------------------------------------------------------------------------- -module DriverMkDepend where +module DriverMkDepend ( + doMkDependHS + ) where #include "HsVersions.h" -import DriverState -import DriverUtil -import DriverFlags +import CompManager ( cmDownsweep, cmTopSort, cyclicModuleErr ) +import CmdLineOpts ( DynFlags( verbosity ) ) +import DriverState ( getStaticOpts, v_Opt_dep ) +import DriverUtil ( escapeSpaces, splitFilename, add ) +import DriverFlags ( processArgs, OptKind(..) ) +import HscTypes ( IsBootInterface, ModSummary(..), msObjFilePath, msHsFilePath ) +import Packages ( PackageIdH(..) ) import SysTools ( newTempName ) import qualified SysTools -import Module -import Module ( isHomeModule ) -import Finder ( findModuleDep ) -import HscTypes ( ModuleLocation(..) ) -import Util +import Module ( Module, ModLocation(..), mkModule, moduleUserString, addBootSuffix_maybe ) +import Digraph ( SCC(..) ) +import Finder ( findModule, FindResult(..) ) +import Util ( global ) +import Outputable import Panic -import IOExts -import Exception +import DATA_IOREF ( IORef, readIORef, writeIORef ) +import EXCEPTION import Directory import IO -import Monad -import Maybe +import Monad ( when ) +import Maybe ( isJust ) -------------------------------------------------------------------------------- --- mkdependHS +#if __GLASGOW_HASKELL__ <= 408 +import Panic ( catchJust, ioErrors ) +#endif - -- flags -GLOBAL_VAR(v_Dep_makefile, "Makefile", String); -GLOBAL_VAR(v_Dep_include_prelude, False, Bool); -GLOBAL_VAR(v_Dep_exclude_mods, [], [String]); -GLOBAL_VAR(v_Dep_suffixes, [], [String]); -GLOBAL_VAR(v_Dep_warnings, True, Bool); +----------------------------------------------------------------- +-- +-- The main function +-- +----------------------------------------------------------------- - -- global vars -GLOBAL_VAR(v_Dep_makefile_hdl, error "dep_makefile_hdl", Maybe Handle); -GLOBAL_VAR(v_Dep_tmp_file, error "dep_tmp_file", String); -GLOBAL_VAR(v_Dep_tmp_hdl, error "dep_tmp_hdl", Handle); -GLOBAL_VAR(v_Dep_dir_contents, error "dep_dir_contents", [(String,[String])]); +doMkDependHS :: DynFlags -> [FilePath] -> IO () +doMkDependHS dflags srcs + = do { -- Initialisation + files <- beginMkDependHS -depStartMarker = "# DO NOT DELETE: Beginning of Haskell dependencies" -depEndMarker = "# DO NOT DELETE: End of Haskell dependencies" + -- Do the downsweep to find all the modules + ; excl_mods <- readIORef v_Dep_exclude_mods + ; mod_summaries <- cmDownsweep dflags srcs [] excl_mods --- for compatibility with the old mkDependHS, we accept options of the form --- -optdep-f -optdep.depend, etc. -dep_opts = - [ ( "s", SepArg (add v_Dep_suffixes) ) - , ( "f", SepArg (writeIORef v_Dep_makefile) ) - , ( "w", NoArg (writeIORef v_Dep_warnings False) ) - , ( "-include-prelude", NoArg (writeIORef v_Dep_include_prelude True) ) - , ( "-exclude-module=", Prefix (add v_Dep_exclude_mods) ) - , ( "x", Prefix (add v_Dep_exclude_mods) ) - ] + -- Sort into dependency order + -- There should be no cycles + ; let sorted = cmTopSort False mod_summaries -beginMkDependHS :: IO () -beginMkDependHS = do + -- Print out the dependencies if wanted + ; if verbosity dflags >= 2 then + hPutStrLn stderr (showSDoc (text "Module dependencies" $$ ppr sorted)) + else return () + + -- Prcess them one by one, dumping results into makefile + -- and complaining about cycles + ; mapM (processDeps dflags (mkd_tmp_hdl files)) sorted + + -- Tidy up + ; endMkDependHS dflags files } + +----------------------------------------------------------------- +-- +-- beginMkDependHs +-- Create a temporary file, +-- find the Makefile, +-- slurp through it, etc +-- +----------------------------------------------------------------- + +data MkDepFiles + = MkDep { mkd_make_file :: FilePath, -- Name of the makefile + mkd_make_hdl :: Maybe Handle, -- Handle for the open makefile + mkd_tmp_file :: FilePath, -- Name of the temporary file + mkd_tmp_hdl :: Handle } -- Handle of the open temporary file +beginMkDependHS :: IO MkDepFiles + +beginMkDependHS = do -- slurp in the mkdependHS-style options flags <- getStaticOpts v_Opt_dep _ <- processArgs dep_opts flags [] -- open a new temp file in which to stuff the dependency info -- as we go along. - dep_file <- newTempName "dep" - writeIORef v_Dep_tmp_file dep_file - tmp_hdl <- openFile dep_file WriteMode - writeIORef v_Dep_tmp_hdl tmp_hdl + tmp_file <- newTempName "dep" + tmp_hdl <- openFile tmp_file WriteMode -- open the makefile makefile <- readIORef v_Dep_makefile exists <- doesFileExist makefile - if not exists - then do - writeIORef v_Dep_makefile_hdl Nothing - return () - + mb_make_hdl <- + if not exists + then return Nothing else do makefile_hdl <- openFile makefile ReadMode - writeIORef v_Dep_makefile_hdl (Just makefile_hdl) -- slurp through until we get the magic start string, -- copying the contents into dep_makefile @@ -108,31 +129,149 @@ beginMkDependHS = do catchJust ioErrors chuck (\e -> if isEOFError e then return () else ioError e) + return (Just makefile_hdl) + -- write the magic marker into the tmp file hPutStrLn tmp_hdl depStartMarker - -- cache the contents of all the import directories, for future - -- reference. - import_dirs <- readIORef v_Import_paths - pkg_import_dirs <- getPackageImportPath - import_dir_contents <- mapM softGetDirectoryContents import_dirs - pkg_import_dir_contents <- mapM softGetDirectoryContents pkg_import_dirs - writeIORef v_Dep_dir_contents - (zip import_dirs import_dir_contents ++ - zip pkg_import_dirs pkg_import_dir_contents) + return (MkDep { mkd_make_file = makefile, mkd_make_hdl = mb_make_hdl, + mkd_tmp_file = tmp_file, mkd_tmp_hdl = tmp_hdl}) - return () +----------------------------------------------------------------- +-- +-- processDeps +-- +----------------------------------------------------------------- -endMkDependHS :: IO () -endMkDependHS = do - makefile <- readIORef v_Dep_makefile - makefile_hdl <- readIORef v_Dep_makefile_hdl - tmp_file <- readIORef v_Dep_tmp_file - tmp_hdl <- readIORef v_Dep_tmp_hdl +processDeps :: DynFlags + -> Handle -- Write dependencies to here + -> SCC ModSummary + -> IO () +-- Write suitable dependencies to handle +-- Always: +-- this.o : this.hs +-- +-- If the dependency is on something other than a .hi file: +-- this.o this.p_o ... : dep +-- otherwise +-- this.o ... : dep.hi +-- this.p_o ... : dep.p_hi +-- ... +-- (where .o is $osuf, and the other suffixes come from +-- the cmdline -s options). +-- +-- For {-# SOURCE #-} imports the "hi" will be "hi-boot". - -- write the magic marker into the tmp file +processDeps dflags hdl (CyclicSCC nodes) + = -- There shouldn't be any cycles; report them + throwDyn (ProgramError (showSDoc $ cyclicModuleErr nodes)) + +processDeps dflags hdl (AcyclicSCC node) + = do { extra_suffixes <- readIORef v_Dep_suffixes + ; include_pkg_deps <- readIORef v_Dep_include_pkg_deps + ; let src_file = msHsFilePath node + obj_file = msObjFilePath node + obj_files = insertSuffixes obj_file extra_suffixes + + do_imp is_boot imp_mod + = do { mb_hi <- findDependency dflags src_file imp_mod + is_boot include_pkg_deps + ; case mb_hi of { + Nothing -> return () ; + Just hi_file -> do + { let hi_files = insertSuffixes hi_file extra_suffixes + write_dep (obj,hi) = writeDependency hdl [obj] hi + + -- Add one dependency for each suffix; + -- e.g. A.o : B.hi + -- A.x_o : B.x_hi + ; mapM_ write_dep (obj_files `zip` hi_files) }}} + + + -- Emit std dependency of the object(s) on the source file + -- Something like A.o : A.hs + ; writeDependency hdl obj_files src_file + + -- Emit a dependency for each import + ; mapM_ (do_imp True) (ms_srcimps node) -- SOURCE imports + ; mapM_ (do_imp False) (ms_imps node) -- regular imports + } + + +findDependency :: DynFlags + -> FilePath -- Importing module: used only for error msg + -> Module -- Imported module + -> IsBootInterface -- Source import + -> Bool -- Record dependency on package modules + -> IO (Maybe FilePath) -- Interface file file +findDependency dflags src imp is_boot include_pkg_deps + = do { -- Find the module; this will be fast because + -- we've done it once during downsweep + r <- findModule dflags imp True {-explicit-} + ; case r of + Found loc pkg + -- Not in this package: we don't need a dependency + | ExtPackage _ <- pkg, not include_pkg_deps + -> return Nothing + + -- Home package: just depend on the .hi or hi-boot file + | otherwise + -> return (Just (addBootSuffix_maybe is_boot (ml_hi_file loc))) + + _ -> throwDyn (ProgramError + (src ++ ": " ++ "can't locate import `" ++ (moduleUserString imp) ++ "'" + ++ if is_boot then " (SOURCE import)" else "")) + } + +----------------------------- +writeDependency :: Handle -> [FilePath] -> FilePath -> IO () +-- (writeDependency h [t1,t2] dep) writes to handle h the dependency +-- t1 t2 : dep +writeDependency hdl targets dep + = hPutStrLn hdl (unwords (map escapeSpaces targets) ++ " : " + ++ escapeSpaces dep) + +----------------------------- +insertSuffixes + :: FilePath -- Original filename; e.g. "foo.o" + -> [String] -- Extra suffices e.g. ["x","y"] + -> [FilePath] -- Zapped filenames e.g. ["foo.o", "foo.x_o", "foo.y_o"] + -- Note that that the extra bit gets inserted *before* the old suffix + -- We assume the old suffix contains no dots, so we can strip it with removeSuffix + + -- NOTE: we used to have this comment + -- In order to construct hi files with alternate suffixes, we + -- now have to find the "basename" of the hi file. This is + -- difficult because we can't just split the hi filename + -- at the last dot - the hisuf might have dots in it. So we + -- check whether the hi filename ends in hisuf, and if it does, + -- we strip off hisuf, otherwise we strip everything after the + -- last dot. + -- But I'm not sure we care about hisufs with dots in them. + -- Lots of other things will break first! + +insertSuffixes file_name extras + = file_name : [ basename ++ "." ++ extra ++ "_" ++ suffix | extra <- extras ] + where + (basename, suffix) = splitFilename file_name + + +----------------------------------------------------------------- +-- +-- endMkDependHs +-- Complete the makefile, close the tmp file etc +-- +----------------------------------------------------------------- + +endMkDependHS :: DynFlags -> MkDepFiles -> IO () + +endMkDependHS dflags + (MkDep { mkd_make_file = makefile, mkd_make_hdl = makefile_hdl, + mkd_tmp_file = tmp_file, mkd_tmp_hdl = tmp_hdl }) + = do + -- write the magic marker into the tmp file hPutStrLn tmp_hdl depEndMarker case makefile_hdl of @@ -154,26 +293,36 @@ endMkDependHS = do -- Create a backup of the original makefile when (isJust makefile_hdl) - (SysTools.copy ("Backing up " ++ makefile) makefile (makefile++".bak")) + (SysTools.copy dflags ("Backing up " ++ makefile) + makefile (makefile++".bak")) -- Copy the new makefile in place - SysTools.copy "Installing new makefile" tmp_file makefile - - -findDependency :: Bool -> FilePath -> ModuleName -> IO (Maybe (String, Bool)) -findDependency is_source src imp = do - excl_mods <- readIORef v_Dep_exclude_mods - include_prelude <- readIORef v_Dep_include_prelude - let imp_mod = moduleNameUserString imp - if imp_mod `elem` excl_mods - then return Nothing - else do - r <- findModuleDep imp is_source - case r of - Just (mod,loc) - | isHomeModule mod || include_prelude - -> return (Just (ml_hi_file loc, not is_source)) - | otherwise - -> return Nothing - Nothing -> throwDyn (ProgramError - (src ++ ": " ++ "can't locate import `" ++ imp_mod ++ "'")) + SysTools.copy dflags "Installing new makefile" tmp_file makefile + + +----------------------------------------------------------------- +-- +-- Flags +-- +----------------------------------------------------------------- + + -- Flags +GLOBAL_VAR(v_Dep_makefile, "Makefile", String); +GLOBAL_VAR(v_Dep_include_pkg_deps, False, Bool); +GLOBAL_VAR(v_Dep_exclude_mods, [], [Module]); +GLOBAL_VAR(v_Dep_suffixes, [], [String]); +GLOBAL_VAR(v_Dep_warnings, True, Bool); + +depStartMarker = "# DO NOT DELETE: Beginning of Haskell dependencies" +depEndMarker = "# DO NOT DELETE: End of Haskell dependencies" + +-- for compatibility with the old mkDependHS, we accept options of the form +-- -optdep-f -optdep.depend, etc. +dep_opts = + [ ( "s", SepArg (add v_Dep_suffixes) ) + , ( "f", SepArg (writeIORef v_Dep_makefile) ) + , ( "w", NoArg (writeIORef v_Dep_warnings False) ) + , ( "-include-prelude", NoArg (writeIORef v_Dep_include_pkg_deps True) ) + , ( "-exclude-module=", Prefix (add v_Dep_exclude_mods . mkModule) ) + , ( "x", Prefix (add v_Dep_exclude_mods . mkModule) ) + ]