X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FMain.hs;h=13ec18f5b92a63fbdc418a4550415e6b1dfa21bd;hb=3a223cd2811d46295048b3a2dab11403ca291b20;hp=9d82e364937988f8ba11aba4abc9f1079bb8bc5f;hpb=60bf710865eff2ac5a497aad66c2bccc66a70215;p=ghc-hetmet.git diff --git a/ghc/compiler/main/Main.hs b/ghc/compiler/main/Main.hs index 9d82e36..7da0074 100644 --- a/ghc/compiler/main/Main.hs +++ b/ghc/compiler/main/Main.hs @@ -1,10 +1,11 @@ -{-# OPTIONS -W -fno-warn-incomplete-patterns #-} +{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-} + ----------------------------------------------------------------------------- --- $Id: Main.hs,v 1.2 2000/10/11 11:54:58 simonmar Exp $ +-- $Id: Main.hs,v 1.131 2003/07/21 15:14:18 ross Exp $ -- -- GHC Driver program -- --- (c) Simon Marlow 2000 +-- (c) The University of Glasgow 2002 -- ----------------------------------------------------------------------------- @@ -15,1119 +16,349 @@ module Main (main) where #include "HsVersions.h" -import CmSummarise ( getImports ) -import CmStaticInfo ( Package(..) ) -import TmpFiles -import Config -import CmdLineOpts -import Util ( global ) - -import RegexString -import Concurrent -#ifndef mingw32_TARGET_OS -import Posix + +#ifdef GHCI +import InteractiveUI( ghciWelcomeMsg, interactiveUI ) #endif -import Directory -import IOExts -import Exception -import Dynamic + +import CompManager ( cmInit, cmLoadModules, cmDepAnal ) +import HscTypes ( GhciMode(..) ) +import Config ( cBooterVersion, cGhcUnregisterised, cProjectVersion ) +import SysTools ( getPackageConfigPath, initSysTools, cleanTempFiles, + normalisePath ) +import Packages ( showPackages, getPackageConfigMap, basePackage, + haskell98Package + ) +import DriverPipeline ( staticLink, doMkDLL, runPipeline ) +import DriverState ( buildCoreToDo, buildStgToDo, + findBuildTag, + getPackageExtraGhcOpts, unregFlags, + v_GhcMode, v_GhcModeFlag, GhcMode(..), + v_Keep_tmp_files, v_Ld_inputs, v_Ways, + v_OptLevel, v_Output_file, v_Output_hi, + readPackageConf, verifyOutputFiles, v_NoLink, + v_Build_tag + ) +import DriverFlags ( buildStaticHscOpts, + dynamic_flags, processArgs, static_flags) + +import DriverMkDepend ( beginMkDependHS, endMkDependHS ) +import DriverPhases ( isSourceFile ) + +import DriverUtil ( add, handle, handleDyn, later, unknownFlagsErr ) +import CmdLineOpts ( dynFlag, restoreDynFlags, + saveDynFlags, setDynFlags, getDynFlags, dynFlag, + DynFlags(..), HscLang(..), v_Static_hsc_opts + ) +import BasicTypes ( failed ) +import Outputable +import Util +import Panic ( GhcException(..), panic, installSignalHandlers ) + +import DATA_IOREF ( readIORef, writeIORef ) +import EXCEPTION ( throwDyn, Exception(..), + AsyncException(StackOverflow) ) + +-- Standard Haskell libraries import IO +import Directory ( doesFileExist ) +import System ( getArgs, exitWith, ExitCode(..) ) import Monad import List -import System import Maybe -import Char - ------------------------------------------------------------------------------ --- Changes: - --- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a --- dynamic flag whereas -package is a static flag.) ----------------------------------------------------------------------------- -- ToDo: --- certain options in OPTIONS pragmas are persistent through subsequent compilations. -- new mkdependHS doesn't support all the options that the old one did (-X et al.) -- time commands when run with -v -- split marker --- mkDLL -- java generation -- user ways -- Win32 support: proper signal handling -- make sure OPTIONS in .hs file propogate to .hc file if -C or -keep-hc-file-too -- reading the package configuration file is too slow --- -H, -K, -Rghc-timing --- hi-diffs +-- -K ----------------------------------------------------------------------------- -- Differences vs. old driver: -- No more "Enter your Haskell program, end with ^D (on a line of its own):" -- consistency checking removed (may do this properly later) --- removed -noC --- no hi diffs (could be added later) -- no -Ofile ----------------------------------------------------------------------------- --- Phases - -{- -Phase of the | Suffix saying | Flag saying | (suffix of) -compilation system | ``start here''| ``stop after''| output file - -literate pre-processor | .lhs | - | - -C pre-processor (opt.) | - | -E | - -Haskell compiler | .hs | -C, -S | .hc, .s -C compiler (opt.) | .hc or .c | -S | .s -assembler | .s or .S | -c | .o -linker | other | - | a.out --} - -data Phase - = MkDependHS -- haskell dependency generation - | Unlit - | Cpp - | Hsc - | Cc - | HCc -- Haskellised C (as opposed to vanilla C) compilation - | Mangle -- assembly mangling, now done by a separate script. - | SplitMangle -- after mangler if splitting - | SplitAs - | As - | Ln - deriving (Eq) - ------------------------------------------------------------------------------ --- Build the Hsc command line - -build_hsc_opts :: IO [String] -build_hsc_opts = do - opt_C_ <- getOpts opt_C -- misc hsc opts - - -- take into account -fno-* flags by removing the equivalent -f* - -- flag from our list. - anti_flags <- getOpts anti_opt_C - let basic_opts = opt_C_ ++ warn_opts ++ optimisation_opts ++ stg_opts - filtered_opts = filter (`notElem` anti_flags) basic_opts - - -- warnings - warn_level <- readIORef warning_opt - let warn_opts = case warn_level of - W_default -> standardWarnings - W_ -> minusWOpts - W_all -> minusWallOpts - W_not -> [] - - -- optimisation - minus_o <- readIORef opt_level - optimisation_opts <- - case minus_o of - 0 -> hsc_minusNoO_flags - 1 -> hsc_minusO_flags - 2 -> hsc_minusO2_flags - _ -> error "unknown opt level" - -- ToDo: -Ofile - - -- STG passes - ways_ <- readIORef ways - let stg_massage | WayProf `elem` ways_ = "-fmassage-stg-for-profiling" - | otherwise = "" - - stg_stats <- readIORef opt_StgStats - let stg_stats_flag | stg_stats = "-dstg-stats" - | otherwise = "" - - let stg_opts = [ stg_massage, stg_stats_flag, "-flet-no-escape" ] - -- let-no-escape always on for now - - verb <- is_verbose - let hi_vers = "-fhi-version="++cProjectVersionInt - - static <- (do s <- readIORef static; if s then return "-static" else return "") - - l <- readIORef hsc_lang - let lang = case l of - HscC -> "-olang=C" - HscAsm -> "-olang=asm" - HscJava -> "-olang=java" - - -- get hi-file suffix - hisuf <- readIORef hi_suf - - -- hi-suffix for packages depends on the build tag. - package_hisuf <- - do tag <- readIORef build_tag - if null tag - then return "hi" - else return (tag ++ "_hi") - - import_dirs <- readIORef import_paths - package_import_dirs <- getPackageImportPath - - let hi_map = "-himap=" ++ - makeHiMap import_dirs hisuf - package_import_dirs package_hisuf - split_marker - - hi_map_sep = "-himap-sep=" ++ [split_marker] - - scale <- readIORef scale_sizes_by - heap <- readState specific_heap_size - stack <- readState specific_stack_size - - return - ( - filtered_opts - -- ToDo: C stub files - ++ [ hi_vers, static, verb, lang, hi_map, hi_map_sep ] - ) - -makeHiMap - (import_dirs :: [String]) - (hi_suffix :: String) - (package_import_dirs :: [String]) - (package_hi_suffix :: String) - (split_marker :: Char) - = foldr (add_dir hi_suffix) - (foldr (add_dir package_hi_suffix) "" package_import_dirs) - import_dirs - where - add_dir hisuf dir str = dir ++ "%." ++ hisuf ++ split_marker : str - - -getOptionsFromSource - :: String -- input file - -> IO [String] -- options, if any -getOptionsFromSource file - = do h <- openFile file ReadMode - catchJust ioErrors (look h) - (\e -> if isEOFError e then return [] else ioError e) - where - look h = do - l <- hGetLine h - case () of - () | null l -> look h - | prefixMatch "#" l -> look h - | prefixMatch "{-# LINE" l -> look h -- -} - | Just (opts:_) <- matchRegex optionRegex l - -> return (words opts) - | otherwise -> return [] - -optionRegex = mkRegex "\\{-#[ \t]+OPTIONS[ \t]+(.*)#-\\}" -- -} - ------------------------------------------------------------------------------ -- Main loop -get_source_files :: [String] -> ([String],[String]) -get_source_files = partition (('-' /=) . head) - main = + -- top-level exception handler: any unrecognised exception is a compiler bug. + handle (\exception -> do + hFlush stdout + case exception of + -- an IO exception probably isn't our fault, so don't panic + IOException _ -> hPutStrLn stderr (show exception) + AsyncException StackOverflow -> + hPutStrLn stderr "stack overflow: use +RTS -K \ + \to increase it" + _other -> hPutStr stderr (show (Panic (show exception))) + exitWith (ExitFailure 1) + ) $ do + -- all error messages are propagated as exceptions - my_catchDyn (\dyn -> case dyn of - PhaseFailed _phase code -> exitWith code - Interrupted -> exitWith (ExitFailure 1) - _ -> do hPutStrLn stderr (show (dyn :: BarfKind)) - exitWith (ExitFailure 1) - ) $ do + handleDyn (\dyn -> do + hFlush stdout + case dyn of + PhaseFailed _ code -> exitWith code + Interrupted -> exitWith (ExitFailure 1) + _ -> do hPutStrLn stderr (show (dyn :: GhcException)) + exitWith (ExitFailure 1) + ) $ do -- make sure we clean up after ourselves - later (do forget_it <- readIORef keep_tmp_files + later (do forget_it <- readIORef v_Keep_tmp_files unless forget_it $ do - verb <- readIORef verbose + verb <- dynFlag verbosity cleanTempFiles verb - ) + ) $ do -- exceptions will be blocked while we clean the temporary files, -- so there shouldn't be any difficulty if we receive further -- signals. - -- install signal handlers - main_thread <- myThreadId + installSignalHandlers + + argv <- getArgs + let (minusB_args, argv') = partition (prefixMatch "-B") argv + top_dir <- initSysTools minusB_args + + -- Read the package configuration + conf_file <- getPackageConfigPath + readPackageConf conf_file + + -- Process all the other arguments, and get the source files + non_static <- processArgs static_flags argv' [] + mode <- readIORef v_GhcMode + + -- -O and --interactive are not a good combination + -- ditto with any kind of way selection + orig_opt_level <- readIORef v_OptLevel + when (orig_opt_level > 0 && mode == DoInteractive) $ + do putStr "warning: -O conflicts with --interactive; -O turned off.\n" + writeIORef v_OptLevel 0 + orig_ways <- readIORef v_Ways + when (notNull orig_ways && mode == DoInteractive) $ + do throwDyn (UsageError + "--interactive can't be used with -prof, -ticky, -unreg or -smp.") + + -- Find the build tag, and re-process the build-specific options. + -- Also add in flags for unregisterised compilation, if + -- GhcUnregisterised=YES. + way_opts <- findBuildTag + let unreg_opts | cGhcUnregisterised == "YES" = unregFlags + | otherwise = [] + pkg_extra_opts <- getPackageExtraGhcOpts + extra_non_static <- processArgs static_flags + (unreg_opts ++ way_opts ++ pkg_extra_opts) [] + + -- Give the static flags to hsc + static_opts <- buildStaticHscOpts + writeIORef v_Static_hsc_opts static_opts + + -- build the default DynFlags (these may be adjusted on a per + -- module basis by OPTIONS pragmas and settings in the interpreter). + + core_todo <- buildCoreToDo + stg_todo <- buildStgToDo + + -- set the "global" HscLang. The HscLang can be further adjusted on a module + -- by module basis, using only the -fvia-C and -fasm flags. If the global + -- HscLang is not HscC or HscAsm, -fvia-C and -fasm have no effect. + dyn_flags <- getDynFlags + build_tag <- readIORef v_Build_tag + let lang = case mode of + DoInteractive -> HscInterpreted + _other | build_tag /= "" -> HscC + | otherwise -> hscLang dyn_flags + -- for ways other that the normal way, we must + -- compile via C. + + setDynFlags (dyn_flags{ coreToDo = core_todo, + stgToDo = stg_todo, + hscLang = lang, + -- leave out hscOutName for now + hscOutName = panic "Main.main:hscOutName not set", + verbosity = 1 + }) + + -- The rest of the arguments are "dynamic" + -- Leftover ones are presumably files + fileish_args <- processArgs dynamic_flags (extra_non_static ++ non_static) [] + + -- save the "initial DynFlags" away + saveDynFlags -#ifndef mingw32_TARGET_OS - let sig_handler = Catch (raiseInThread main_thread - (DynException (toDyn Interrupted))) - installHandler sigQUIT sig_handler Nothing - installHandler sigINT sig_handler Nothing + let + {- + We split out the object files (.o, .dll) and add them + to v_Ld_inputs for use by the linker. + + The following things should be considered compilation manager inputs: + + - haskell source files (strings ending in .hs, .lhs or other + haskellish extension), + + - module names (not forgetting hierarchical module names), + + - and finally we consider everything not containing a '.' to be + a comp manager input, as shorthand for a .hs or .lhs filename. + + Everything else is considered to be a linker object, and passed + straight through to the linker. + -} + looks_like_an_input m = isSourceFile m + || looksLikeModuleName m + || '.' `notElem` m + + -- To simplify the handling of filepaths, we normalise all filepaths right + -- away - e.g., for win32 platforms, backslashes are converted + -- into forward slashes. + normal_fileish_paths = map normalisePath fileish_args + (srcs, objs) = partition looks_like_an_input normal_fileish_paths + + mapM_ (add v_Ld_inputs) objs + + ---------------- Display banners and configuration ----------- + showBanners mode conf_file static_opts + + ---------------- Final sanity checking ----------- + checkOptions mode srcs objs + + -- We always link in the base package in + -- one-shot linking. Any other packages + -- required must be given using -package + -- options on the command-line. + let def_hs_pkgs = [basePackage, haskell98Package] + + ---------------- Do the business ----------- + case mode of + DoMake -> doMake srcs + + DoMkDependHS -> do { beginMkDependHS ; + compileFiles mode srcs; + endMkDependHS } + StopBefore p -> do { compileFiles mode srcs; return () } + DoMkDLL -> do { o_files <- compileFiles mode srcs; + doMkDLL o_files def_hs_pkgs } + DoLink -> do { o_files <- compileFiles mode srcs; + omit_linking <- readIORef v_NoLink; + when (not omit_linking) + (staticLink o_files def_hs_pkgs) } + +#ifndef GHCI + DoInteractive -> throwDyn (CmdLineError "not built for interactive use") +#else + DoInteractive -> interactiveUI srcs #endif - pgm <- getProgName - writeIORef prog_name pgm - - argv <- getArgs - - -- grab any -B options from the command line first - argv' <- setTopDir argv - - -- read the package configuration - conf_file <- readIORef package_config - contents <- readFile conf_file - writeIORef package_details (read contents) - - -- find the phase to stop after (i.e. -E, -C, -c, -S flags) - (flags2, todo, stop_flag) <- getToDo argv' - writeIORef v_todo todo - - -- process all the other arguments, and get the source files - non_static <- processArgs static_flags flags2 [] - - -- find the build tag, and re-process the build-specific options - more_opts <- findBuildTag - _ <- processArgs static_opts more_opts [] - - -- give the static flags to hsc - build_hsc_opts - - -- the rest of the arguments are "dynamic" - srcs <- processArgs dynamic_flags non_static [] - - -- complain about any unknown flags - let unknown_flags = [ f | ('-':f) <- srcs ] - mapM unknownFlagErr unknown_flags - - -- get the -v flag - verb <- readIORef verbose - - when verb (do hPutStr stderr "Glasgow Haskell Compiler, Version " - hPutStr stderr version_str - hPutStr stderr ", for Haskell 98, compiled by GHC version " - hPutStr stderr booter_version - hPutStr stderr "\n") - - when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file)) - - -- mkdependHS is special - when (todo == DoMkDependHS) beginMkDependHS - - -- for each source file, find which phases to run - pipelines <- mapM (genPipeline todo stop_flag) srcs - let src_pipelines = zip srcs pipelines - - o_file <- readIORef output_file - if isJust o_file && todo /= DoLink && length srcs > 1 - then throwDyn (UsageError "can't apply -o option to multiple source files") +-- ----------------------------------------------------------------------------- +-- Option sanity checks + +checkOptions :: GhcMode -> [String] -> [String] -> IO () + -- Final sanity checking before kicking off a compilation (pipeline). +checkOptions mode srcs objs = do + -- Complain about any unknown flags + let unknown_opts = [ f | f@('-':_) <- srcs ] + when (notNull unknown_opts) (unknownFlagsErr unknown_opts) + + -- -ohi sanity check + ohi <- readIORef v_Output_hi + if (isJust ohi && + (mode == DoMake || mode == DoInteractive || srcs `lengthExceeds` 1)) + then throwDyn (UsageError "-ohi can only be used when compiling a single source file") else do - if null srcs then throwDyn (UsageError "no input files") else do - - -- save the flag state, because this could be modified by OPTIONS pragmas - -- during the compilation, and we'll need to restore it before starting - -- the next compilation. - saved_driver_state <- readIORef driver_state - - let compileFile (src, phases) = do - r <- run_pipeline phases src (todo==DoLink) True orig_base orig_suff - writeIORef driver_state saved_driver_state - return r - where (orig_base, orig_suff) = splitFilename src - - o_files <- mapM compileFile src_pipelines - - when (todo == DoMkDependHS) endMkDependHS - - when (todo == DoLink) (do_link o_files) - - ------------------------------------------------------------------------------ --- Which phase to stop at - -data ToDo = DoMkDependHS | DoMkDLL | StopBefore Phase | DoLink - deriving (Eq) - -GLOBAL_VAR(v_todo, error "todo", ToDo) - -todoFlag :: String -> Maybe ToDo -todoFlag "-M" = Just $ DoMkDependHS -todoFlag "-E" = Just $ StopBefore Hsc -todoFlag "-C" = Just $ StopBefore HCc -todoFlag "-S" = Just $ StopBefore As -todoFlag "-c" = Just $ StopBefore Ln -todoFlag _ = Nothing - -getToDo :: [String] - -> IO ( [String] -- rest of command line - , ToDo -- phase to stop at - , String -- "stop at" flag - ) -getToDo flags - = case my_partition todoFlag flags of - ([] , rest) -> return (rest, DoLink, "") -- default is to do linking - ([(flag,one)], rest) -> return (rest, one, flag) - (_ , _ ) -> - throwDyn (OtherError "only one of the flags -M, -E, -C, -S, -c is allowed") - ------------------------------------------------------------------------------ --- genPipeline --- --- Herein is all the magic about which phases to run in which order, whether --- the intermediate files should be in /tmp or in the current directory, --- what the suffix of the intermediate files should be, etc. - --- The following compilation pipeline algorithm is fairly hacky. A --- better way to do this would be to express the whole comilation as a --- data flow DAG, where the nodes are the intermediate files and the --- edges are the compilation phases. This framework would also work --- nicely if a haskell dependency generator was included in the --- driver. - --- It would also deal much more cleanly with compilation phases that --- generate multiple intermediates, (eg. hsc generates .hc, .hi, and --- possibly stub files), where some of the output files need to be --- processed further (eg. the stub files need to be compiled by the C --- compiler). - --- A cool thing to do would then be to execute the data flow graph --- concurrently, automatically taking advantage of extra processors on --- the host machine. For example, when compiling two Haskell files --- where one depends on the other, the data flow graph would determine --- that the C compiler from the first comilation can be overlapped --- with the hsc comilation for the second file. - -data IntermediateFileType - = Temporary - | Persistent - deriving (Eq) - --- the first compilation phase for a given file is determined --- by its suffix. -startPhase "lhs" = Unlit -startPhase "hs" = Cpp -startPhase "hc" = HCc -startPhase "c" = Cc -startPhase "raw_s" = Mangle -startPhase "s" = As -startPhase "S" = As -startPhase "o" = Ln -startPhase _ = Ln -- all unknown file types - -genPipeline - :: ToDo -- when to stop - -> String -- "stop after" flag (for error messages) - -> String -- original filename - -> IO [ -- list of phases to run for this file - (Phase, - IntermediateFileType, -- keep the output from this phase? - String) -- output file suffix - ] - -genPipeline todo stop_flag filename - = do - split <- readIORef split_object_files - mangle <- readIORef do_asm_mangling - lang <- readIORef hsc_lang - keep_hc <- readIORef keep_hc_files - keep_raw_s <- readIORef keep_raw_s_files - keep_s <- readIORef keep_s_files - - let - ----------- ----- ---- --- -- -- - - - - (_basename, suffix) = splitFilename filename - - start_phase = startPhase suffix - - haskell_ish_file = suffix `elem` [ "hs", "lhs", "hc" ] - c_ish_file = suffix `elem` [ "c", "s", "S" ] -- maybe .cc et al.?? - - -- for a .hc file, or if the -C flag is given, we need to force lang to HscC - real_lang - | suffix == "hc" = HscC - | todo == StopBefore HCc && lang /= HscC && haskell_ish_file = HscC - | otherwise = lang - - let - ----------- ----- ---- --- -- -- - - - - pipeline - | todo == DoMkDependHS = [ Unlit, Cpp, MkDependHS ] - - | haskell_ish_file = - case real_lang of - HscC | split && mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle, - SplitMangle, SplitAs ] - | mangle -> [ Unlit, Cpp, Hsc, HCc, Mangle, As ] - | split -> not_valid - | otherwise -> [ Unlit, Cpp, Hsc, HCc, As ] - - HscAsm | split -> [ Unlit, Cpp, Hsc, SplitMangle, SplitAs ] - | otherwise -> [ Unlit, Cpp, Hsc, As ] - - HscJava | split -> not_valid - | otherwise -> error "not implemented: compiling via Java" - - | c_ish_file = [ Cc, As ] - - | otherwise = [ ] -- just pass this file through to the linker - - -- ToDo: this is somewhat cryptic - not_valid = throwDyn (OtherError ("invalid option combination")) - ----------- ----- ---- --- -- -- - - - - - -- this shouldn't happen. - if start_phase /= Ln && start_phase `notElem` pipeline - then throwDyn (OtherError ("can't find starting phase for " - ++ filename)) + -- -o sanity checking + o_file <- readIORef v_Output_file + if (srcs `lengthExceeds` 1 && isJust o_file && mode /= DoLink && mode /= DoMkDLL) + then throwDyn (UsageError "can't apply -o to multiple source files") else do - -- if we can't find the phase we're supposed to stop before, - -- something has gone wrong. - case todo of - StopBefore phase -> - when (phase /= Ln - && phase `notElem` pipeline - && not (phase == As && SplitAs `elem` pipeline)) $ - throwDyn (OtherError - ("flag " ++ stop_flag - ++ " is incompatible with source file `" ++ filename ++ "'")) - _ -> return () - - let - ----------- ----- ---- --- -- -- - - - - annotatePipeline - :: [Phase] -- raw pipeline - -> Phase -- phase to stop before - -> [(Phase, IntermediateFileType, String{-file extension-})] - annotatePipeline [] _ = [] - annotatePipeline (Ln:_) _ = [] - annotatePipeline (phase:next_phase:ps) stop = - (phase, keep_this_output, phase_input_ext next_phase) - : annotatePipeline (next_phase:ps) stop - where - keep_this_output - | next_phase == stop = Persistent - | otherwise = - case next_phase of - Ln -> Persistent - Mangle | keep_raw_s -> Persistent - As | keep_s -> Persistent - HCc | keep_hc -> Persistent - _other -> Temporary - - -- add information about output files to the pipeline - -- the suffix on an output file is determined by the next phase - -- in the pipeline, so we add linking to the end of the pipeline - -- to force the output from the final phase to be a .o file. - stop_phase = case todo of StopBefore phase -> phase - DoMkDependHS -> Ln - DoLink -> Ln - annotated_pipeline = annotatePipeline (pipeline ++ [ Ln ]) stop_phase - - phase_ne p (p1,_,_) = (p1 /= p) - ----------- ----- ---- --- -- -- - - - - - return $ - dropWhile (phase_ne start_phase) . - foldr (\p ps -> if phase_ne stop_phase p then p:ps else []) [] - $ annotated_pipeline - - - -run_pipeline - :: [ (Phase, IntermediateFileType, String) ] -- phases to run - -> String -- input file - -> Bool -- doing linking afterward? - -> Bool -- take into account -o when generating output? - -> String -- original basename (eg. Main) - -> String -- original suffix (eg. hs) - -> IO String -- return final filename - -run_pipeline [] input_fn _ _ _ _ = return input_fn -run_pipeline ((phase, keep, o_suffix):phases) - input_fn do_linking use_ofile orig_basename orig_suffix - = do - - output_fn <- outputFileName (null phases) keep o_suffix - - carry_on <- run_phase phase orig_basename orig_suffix input_fn output_fn - -- sometimes we bail out early, eg. when the compiler's recompilation - -- checker has determined that recompilation isn't necessary. - if not carry_on - then do let (_,keep,final_suffix) = last phases - ofile <- outputFileName True keep final_suffix - return ofile - else do -- carry on ... - - -- sadly, ghc -E is supposed to write the file to stdout. We - -- generate .cpp, so we also have to cat the file here. - when (null phases && phase == Cpp) $ - run_something "Dump pre-processed file to stdout" - ("cat " ++ output_fn) - - run_pipeline phases output_fn do_linking use_ofile orig_basename orig_suffix - - where - outputFileName last_phase keep suffix - = do o_file <- readIORef output_file - if last_phase && not do_linking && use_ofile && isJust o_file - then case o_file of - Just s -> return s - Nothing -> error "outputFileName" - else if keep == Persistent - then do f <- odir_ify (orig_basename ++ '.':suffix) - osuf_ify f - else newTempName suffix - -------------------------------------------------------------------------------- --- mkdependHS - - -- flags -GLOBAL_VAR(dep_makefile, "Makefile", String); -GLOBAL_VAR(dep_include_prelude, False, Bool); -GLOBAL_VAR(dep_ignore_dirs, [], [String]); -GLOBAL_VAR(dep_suffixes, [], [String]); -GLOBAL_VAR(dep_warnings, True, Bool); - - -- global vars -GLOBAL_VAR(dep_makefile_hdl, error "dep_makefile_hdl", Maybe Handle); -GLOBAL_VAR(dep_tmp_file, error "dep_tmp_file", String); -GLOBAL_VAR(dep_tmp_hdl, error "dep_tmp_hdl", Handle); -GLOBAL_VAR(dep_dir_contents, error "dep_dir_contents", [(String,[String])]); - -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 dep_suffixes) ), - ( "f", SepArg (writeIORef dep_makefile) ), - ( "w", NoArg (writeIORef dep_warnings False) ), - ( "-include-prelude", NoArg (writeIORef dep_include_prelude True) ), - ( "X", Prefix (addToDirList dep_ignore_dirs) ), - ( "-exclude-directory=", Prefix (addToDirList dep_ignore_dirs) ) - ] - -beginMkDependHS :: IO () -beginMkDependHS = do - - -- slurp in the mkdependHS-style options - flags <- getOpts 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 dep_tmp_file dep_file - tmp_hdl <- openFile dep_file WriteMode - writeIORef dep_tmp_hdl tmp_hdl - - -- open the makefile - makefile <- readIORef dep_makefile - exists <- doesFileExist makefile - if not exists - then do - writeIORef dep_makefile_hdl Nothing - return () - + -- Check that there are some input files (except in the interactive + -- case) + if null srcs && null objs && mode /= DoInteractive + then throwDyn (UsageError "no input files") else do - makefile_hdl <- openFile makefile ReadMode - writeIORef dep_makefile_hdl (Just makefile_hdl) - - -- slurp through until we get the magic start string, - -- copying the contents into dep_makefile - let slurp = do - l <- hGetLine makefile_hdl - if (l == depStartMarker) - then return () - else do hPutStrLn tmp_hdl l; slurp - - -- slurp through until we get the magic end marker, - -- throwing away the contents - let chuck = do - l <- hGetLine makefile_hdl - if (l == depEndMarker) - then return () - else chuck - - catchJust ioErrors slurp - (\e -> if isEOFError e then return () else ioError e) - catchJust ioErrors chuck - (\e -> if isEOFError e then return () else ioError e) - - - -- 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 import_paths - pkg_import_dirs <- getPackageImportPath - import_dir_contents <- mapM getDirectoryContents import_dirs - pkg_import_dir_contents <- mapM getDirectoryContents pkg_import_dirs - writeIORef dep_dir_contents - (zip import_dirs import_dir_contents ++ - zip pkg_import_dirs pkg_import_dir_contents) - - -- ignore packages unless --include-prelude is on - include_prelude <- readIORef dep_include_prelude - when (not include_prelude) $ - mapM_ (add dep_ignore_dirs) pkg_import_dirs - - return () - - -endMkDependHS :: IO () -endMkDependHS = do - makefile <- readIORef dep_makefile - makefile_hdl <- readIORef dep_makefile_hdl - tmp_file <- readIORef dep_tmp_file - tmp_hdl <- readIORef dep_tmp_hdl - - -- write the magic marker into the tmp file - hPutStrLn tmp_hdl depEndMarker - - case makefile_hdl of - Nothing -> return () - Just hdl -> do - - -- slurp the rest of the orignal makefile and copy it into the output - let slurp = do - l <- hGetLine hdl - hPutStrLn tmp_hdl l - slurp - - catchJust ioErrors slurp - (\e -> if isEOFError e then return () else ioError e) - - hClose hdl - - hClose tmp_hdl -- make sure it's flushed - - -- create a backup of the original makefile - when (isJust makefile_hdl) $ - run_something ("Backing up " ++ makefile) - (unwords [ "cp", makefile, makefile++".bak" ]) - - -- copy the new makefile in place - run_something "Installing new makefile" - (unwords [ "cp", tmp_file, makefile ]) - - -findDependency :: String -> Import -> IO (Maybe (String, Bool)) -findDependency mod imp = do - dir_contents <- readIORef dep_dir_contents - ignore_dirs <- readIORef dep_ignore_dirs - hisuf <- readIORef hi_suf - let - (imp_mod, is_source) = - case imp of - Normal str -> (str, False) - Source str -> (str, True ) - - imp_hi = imp_mod ++ '.':hisuf - imp_hiboot = imp_mod ++ ".hi-boot" - imp_hiboot_v = imp_mod ++ ".hi-boot-" ++ cHscIfaceFileVersion - imp_hs = imp_mod ++ ".hs" - imp_lhs = imp_mod ++ ".lhs" - - deps | is_source = [ imp_hiboot_v, imp_hiboot, imp_hs, imp_lhs ] - | otherwise = [ imp_hi, imp_hs, imp_lhs ] - - search [] = throwDyn (OtherError ("can't find one of the following: " ++ - unwords (map (\d -> '`': d ++ "'") deps) ++ - " (imported from `" ++ mod ++ "')")) - search ((dir, contents) : dirs) - | null present = search dirs - | otherwise = - if dir `elem` ignore_dirs - then return Nothing - else if is_source - then if dep /= imp_hiboot_v - then return (Just (dir++'/':imp_hiboot, False)) - else return (Just (dir++'/':dep, False)) - else return (Just (dir++'/':imp_hi, not is_source)) - where - present = filter (`elem` contents) deps - dep = head present - - -- in - search dir_contents + -- Verify that output files point somewhere sensible. + verifyOutputFiles ------------------------------------------------------------------------------ --- MkDependHS phase +-- ----------------------------------------------------------------------------- +-- Compile files in one-shot mode. -run_phase MkDependHS basename suff input_fn _output_fn = do - src <- readFile input_fn - let imports = getImports src +compileFiles :: GhcMode + -> [String] -- Source files + -> IO [String] -- Object files +compileFiles mode srcs = do + stop_flag <- readIORef v_GhcModeFlag + mapM (compileFile mode stop_flag) srcs - deps <- mapM (findDependency basename) imports - osuf_opt <- readIORef output_suf - let osuf = case osuf_opt of - Nothing -> "o" - Just s -> s - - extra_suffixes <- readIORef dep_suffixes - let suffixes = osuf : map (++ ('_':osuf)) extra_suffixes - ofiles = map (\suf -> basename ++ '.':suf) suffixes - - objs <- mapM odir_ify ofiles - - hdl <- readIORef dep_tmp_hdl - - -- std dependeny of the object(s) on the source file - hPutStrLn hdl (unwords objs ++ " : " ++ basename ++ '.':suff) - - let genDep (dep, False {- not an hi file -}) = - hPutStrLn hdl (unwords objs ++ " : " ++ dep) - genDep (dep, True {- is an hi file -}) = do - hisuf <- readIORef 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 (o ++ " : " ++ d)) objs deps) - - mapM 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 - -- ... +compileFile mode stop_flag src = do + restoreDynFlags - -- (where .o is $osuf, and the other suffixes come from - -- the cmdline -s options). + exists <- doesFileExist src + when (not exists) $ + throwDyn (CmdLineError ("file `" ++ src ++ "' does not exist")) ------------------------------------------------------------------------------ --- Hsc phase - -run_phase Hsc basename suff input_fn output_fn - = do hsc <- readIORef pgm_C - - -- we add the current directory (i.e. the directory in which - -- the .hs files resides) to the import path, since this is - -- what gcc does, and it's probably what you want. - let current_dir = getdir basename - - paths <- readIORef include_paths - writeIORef include_paths (current_dir : paths) - - -- build the hsc command line - hsc_opts <- build_hsc_opts - - doing_hi <- readIORef produceHi - tmp_hi_file <- if doing_hi - then newTempName "hi" - else return "" - - -- tmp files for foreign export stub code - tmp_stub_h <- newTempName "stub_h" - tmp_stub_c <- newTempName "stub_c" - - -- figure out where to put the .hi file - ohi <- readIORef output_hi - hisuf <- readIORef hi_suf - let hi_flags = case ohi of - Nothing -> [ "-hidir="++current_dir, "-hisuf="++hisuf ] - Just fn -> [ "-hifile="++fn ] - - -- figure out if the source has changed, for recompilation avoidance. - -- only do this if we're eventually going to generate a .o file. - -- (ToDo: do when generating .hc files too?) - -- - -- Setting source_unchanged to "-fsource_unchanged" means that M.o seems - -- to be up to date wrt M.hs; so no need to recompile unless imports have - -- changed (which the compiler itself figures out). - -- Setting source_unchanged to "" tells the compiler that M.o is out of - -- date wrt M.hs (or M.o doesn't exist) so we must recompile regardless. - do_recomp <- readIORef recomp - todo <- readIORef v_todo - o_file <- odir_ify (basename ++ '.':phase_input_ext Ln) - source_unchanged <- - if not (do_recomp && ( todo == DoLink || todo == StopBefore Ln )) - then return "" - else do t1 <- getModificationTime (basename ++ '.':suff) - o_file_exists <- doesFileExist o_file - if not o_file_exists - then return "" -- Need to recompile - else do t2 <- getModificationTime o_file - if t2 > t1 - then return "-fsource-unchanged" - else return "" - - -- run the compiler! - run_something "Haskell Compiler" - (unwords (hsc : input_fn : ( - hsc_opts - ++ hi_flags - ++ [ - source_unchanged, - "-ofile="++output_fn, - "-F="++tmp_stub_c, - "-FH="++tmp_stub_h - ] - ++ stat_opts - ))) - - -- check whether compilation was performed, bail out if not - b <- doesFileExist output_fn - if not b && not (null source_unchanged) -- sanity - then do run_something "Touching object file" - ("touch " ++ o_file) - return False - else do -- carry on... - - -- Deal with stubs - let stub_h = basename ++ "_stub.h" - let stub_c = basename ++ "_stub.c" - - -- copy .h_stub file into current dir if present - b <- doesFileExist tmp_stub_h - when b (do - run_something "Copy stub .h file" - ("cp " ++ tmp_stub_h ++ ' ':stub_h) - - -- #include <..._stub.h> in .hc file - addCmdlineHCInclude tmp_stub_h -- hack - - -- copy the _stub.c file into the current dir - run_something "Copy stub .c file" - (unwords [ - "rm -f", stub_c, "&&", - "echo \'#include \""++stub_h++"\"\' >"++stub_c, " &&", - "cat", tmp_stub_c, ">> ", stub_c - ]) - - -- compile the _stub.c file w/ gcc - pipeline <- genPipeline (StopBefore Ln) "" stub_c - run_pipeline pipeline stub_c False{-no linking-} - False{-no -o option-} - (basename++"_stub") "c" - - add ld_inputs (basename++"_stub.o") - ) - return True - ------------------------------------------------------------------------------ --- Cc phase - --- we don't support preprocessing .c files (with -E) now. Doing so introduces --- way too many hacks, and I can't say I've ever used it anyway. - -run_phase cc_phase _basename _suff input_fn output_fn - | cc_phase == Cc || cc_phase == HCc - = do cc <- readIORef pgm_c - cc_opts <- (getOpts opt_c) - cmdline_include_dirs <- readIORef include_paths - - let hcc = cc_phase == HCc - - -- add package include paths even if we're just compiling - -- .c files; this is the Value Add(TM) that using - -- ghc instead of gcc gives you :) - pkg_include_dirs <- getPackageIncludePath - let include_paths = map (\p -> "-I"++p) (cmdline_include_dirs - ++ pkg_include_dirs) - - c_includes <- getPackageCIncludes - cmdline_includes <- readState cmdline_hc_includes -- -#include options - - let cc_injects | hcc = unlines (map mk_include - (c_includes ++ reverse cmdline_includes)) - | otherwise = "" - mk_include h_file = - case h_file of - '"':_{-"-} -> "#include "++h_file - '<':_ -> "#include "++h_file - _ -> "#include \""++h_file++"\"" - - cc_help <- newTempName "c" - h <- openFile cc_help WriteMode - hPutStr h cc_injects - hPutStrLn h ("#include \"" ++ input_fn ++ "\"\n") - hClose h - - ccout <- newTempName "ccout" - - mangle <- readIORef do_asm_mangling - (md_c_flags, md_regd_c_flags) <- machdepCCOpts - - verb <- is_verbose - - o2 <- readIORef opt_minus_o2_for_C - let opt_flag | o2 = "-O2" - | otherwise = "-O" - - pkg_extra_cc_opts <- getPackageExtraCcOpts - - excessPrecision <- readState excess_precision - - run_something "C Compiler" - (unwords ([ cc, "-x", "c", cc_help, "-o", output_fn ] - ++ md_c_flags - ++ (if cc_phase == HCc && mangle - then md_regd_c_flags - else []) - ++ [ verb, "-S", "-Wimplicit", opt_flag ] - ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ] - ++ cc_opts -#ifdef mingw32_TARGET_OS - ++ [" -mno-cygwin"] -#endif - ++ (if excessPrecision then [] else [ "-ffloat-store" ]) - ++ include_paths - ++ pkg_extra_cc_opts --- ++ [">", ccout] - )) - return True - - -- ToDo: postprocess the output from gcc - ------------------------------------------------------------------------------ --- Mangle phase - -run_phase Mangle _basename _suff input_fn output_fn - = do mangler <- readIORef pgm_m - mangler_opts <- getOpts opt_m - machdep_opts <- - if (prefixMatch "i386" cTARGETPLATFORM) - then do n_regs <- readState stolen_x86_regs - return [ show n_regs ] - else return [] - run_something "Assembly Mangler" - (unwords (mangler : - mangler_opts - ++ [ input_fn, output_fn ] - ++ machdep_opts - )) - return True - ------------------------------------------------------------------------------ --- Splitting phase - -run_phase SplitMangle _basename _suff input_fn _output_fn - = do splitter <- readIORef pgm_s - - -- this is the prefix used for the split .s files - tmp_pfx <- readIORef tmpdir - x <- getProcessID - let split_s_prefix = tmp_pfx ++ "/ghc" ++ show x - writeIORef split_prefix split_s_prefix - addFilesToClean (split_s_prefix ++ "__*") -- d:-) - - -- allocate a tmp file to put the no. of split .s files in (sigh) - n_files <- newTempName "n_files" - - run_something "Split Assembly File" - (unwords [ splitter - , input_fn - , split_s_prefix - , n_files ] - ) - - -- save the number of split files for future references - s <- readFile n_files - let n = read s :: Int - writeIORef n_split_files n - return True - ------------------------------------------------------------------------------ --- As phase - -run_phase As _basename _suff input_fn output_fn - = do as <- readIORef pgm_a - as_opts <- getOpts opt_a - - cmdline_include_paths <- readIORef include_paths - let cmdline_include_flags = map (\p -> "-I"++p) cmdline_include_paths - run_something "Assembler" - (unwords (as : as_opts - ++ cmdline_include_flags - ++ [ "-c", input_fn, "-o", output_fn ] - )) - return True - -run_phase SplitAs basename _suff _input_fn _output_fn - = do as <- readIORef pgm_a - as_opts <- getOpts opt_a - - split_s_prefix <- readIORef split_prefix - n <- readIORef n_split_files - - odir <- readIORef output_dir - let real_odir = case odir of - Nothing -> basename - Just d -> d - - let assemble_file n = do - let input_s = split_s_prefix ++ "__" ++ show n ++ ".s" - let output_o = newdir real_odir - (basename ++ "__" ++ show n ++ ".o") - real_o <- osuf_ify output_o - run_something "Assembler" - (unwords (as : as_opts - ++ [ "-c", "-o", real_o, input_s ] - )) - - mapM_ assemble_file [1..n] - return True - ------------------------------------------------------------------------------ --- Linking - -do_link :: [String] -> IO () -do_link o_files = do - ln <- readIORef pgm_l - verb <- is_verbose - o_file <- readIORef output_file - let output_fn = case o_file of { Just s -> s; Nothing -> "a.out"; } - - pkg_lib_paths <- getPackageLibraryPath - let pkg_lib_path_opts = map ("-L"++) pkg_lib_paths - - lib_paths <- readIORef library_paths - let lib_path_opts = map ("-L"++) lib_paths - - pkg_libs <- getPackageLibraries - let pkg_lib_opts = map (\lib -> "-l"++lib) pkg_libs - - libs <- readIORef cmdline_libraries - let lib_opts = map ("-l"++) (reverse libs) - -- reverse because they're added in reverse order from the cmd line - - pkg_extra_ld_opts <- getPackageExtraLdOpts - - -- probably _stub.o files - extra_ld_inputs <- readIORef ld_inputs - - -- opts from -optl- - extra_ld_opts <- getOpts opt_l - - run_something "Linker" - (unwords - ([ ln, verb, "-o", output_fn ] - ++ o_files - ++ extra_ld_inputs - ++ lib_path_opts - ++ lib_opts - ++ pkg_lib_path_opts - ++ pkg_lib_opts - ++ pkg_extra_ld_opts - ++ extra_ld_opts - ) - ) - ------------------------------------------------------------------------------ --- compatibility code - -#if __GLASGOW_HASKELL__ <= 408 -catchJust = catchIO -ioErrors = justIoErrors -#endif - -#ifdef mingw32_TARGET_OS -foreign import "_getpid" getProcessID :: IO Int -#endif + o_file <- readIORef v_Output_file + -- when linking, the -o argument refers to the linker's output. + -- otherwise, we use it as the name for the pipeline's output. + let maybe_o_file + | mode==DoLink || mode==DoMkDLL = Nothing + | otherwise = o_file + + runPipeline mode stop_flag True maybe_o_file src Nothing{-no ModLocation-} + + +-- ---------------------------------------------------------------------------- +-- Run --make mode + +doMake :: [String] -> IO () +doMake [] = throwDyn (UsageError "no input files") +doMake srcs = do + dflags <- getDynFlags + state <- cmInit Batch + graph <- cmDepAnal state dflags srcs + (_, ok_flag, _) <- cmLoadModules state dflags graph + when (failed ok_flag) (exitWith (ExitFailure 1)) + return () + +-- --------------------------------------------------------------------------- +-- Various banners and verbosity output. + +showBanners :: GhcMode -> FilePath -> [String] -> IO () +showBanners mode conf_file static_opts = do + verb <- dynFlag verbosity + + -- Show the GHCi banner +# ifdef GHCI + when (mode == DoInteractive && verb >= 1) $ + hPutStrLn stdout ghciWelcomeMsg +# endif + + -- Display details of the configuration in verbose mode + when (verb >= 2) + (do hPutStr stderr "Glasgow Haskell Compiler, Version " + hPutStr stderr cProjectVersion + hPutStr stderr ", for Haskell 98, compiled by GHC version " + hPutStrLn stderr cBooterVersion) + + when (verb >= 2) + (hPutStrLn stderr ("Using package config file: " ++ conf_file)) + + pkg_details <- getPackageConfigMap + showPackages pkg_details + + when (verb >= 3) + (hPutStrLn stderr ("Hsc static flags: " ++ unwords static_opts))