-{-# OPTIONS -W -fno-warn-incomplete-patterns #-}
+{-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-}
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.3 2000/10/11 14:08:52 simonmar Exp $
--
-- GHC Driver program
--
--- (c) Simon Marlow 2000
+-- (c) The University of Glasgow 2005
--
-----------------------------------------------------------------------------
--- with path so that ghc -M can find config.h
-#include "../includes/config.h"
-
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
+-- The official GHC API
+import qualified GHC
+import GHC ( Session, DynFlags(..), GhcMode(..), HscTarget(..),
+ LoadHowMuch(..) )
+import CmdLineParser
+
+-- Implementations of the various modes (--show-iface, mkdependHS. etc.)
+import MkIface ( showIface )
+import DriverPipeline ( oneShot, compileFile )
+import DriverMkDepend ( doMkDependHS )
+import SysTools ( getTopDir, getUsageMsgPaths )
+#ifdef GHCI
+import InteractiveUI ( ghciWelcomeMsg, interactiveUI )
#endif
-import Directory
-import IOExts
-import Exception
-import Dynamic
+-- Various other random stuff that we need
+import Config ( cProjectVersion, cBooterVersion, cProjectName )
+import Packages ( dumpPackages, initPackages )
+import DriverPhases ( Phase(..), isSourceFilename, anyHsc,
+ startPhase, isHaskellSrcFilename )
+import StaticFlags ( staticFlags, v_Ld_inputs )
+import BasicTypes ( failed )
+import Util
+import Panic
+
+-- Standard Haskell libraries
+import EXCEPTION ( throwDyn )
import IO
+import Directory ( doesDirectoryExist )
+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<size>
-----------------------------------------------------------------------------
--- 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
-
------------------------------------------------------------------------------
--- Main loop
+-- GHC's command-line interface
main =
- -- 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
-
- -- make sure we clean up after ourselves
- later (do forget_it <- readIORef keep_tmp_files
- unless forget_it $ do
- verb <- readIORef verbose
- cleanTempFiles verb
- )
- -- 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
-
-#ifndef mingw32_TARGET_OS
- let sig_handler = Catch (raiseInThread main_thread
- (DynException (toDyn Interrupted)))
- installHandler sigQUIT sig_handler Nothing
- installHandler sigINT sig_handler Nothing
+ GHC.defaultErrorHandler $ do
+
+ argv0 <- getArgs
+ argv1 <- GHC.init argv0
+
+ -- 2. Parse the "mode" flags (--make, --interactive etc.)
+ (cli_mode, argv2) <- parseModeFlags argv1
+
+ let mode = case cli_mode of
+ DoInteractive -> Interactive
+ DoEval _ -> Interactive
+ DoMake -> BatchCompile
+ DoMkDependHS -> MkDepend
+ _ -> OneShot
+
+ -- start our GHC session
+ session <- GHC.newSession mode
+
+ dflags0 <- GHC.getSessionDynFlags session
+
+ -- set the default HscTarget. The HscTarget can be further
+ -- adjusted on a module by module basis, using only the -fvia-C and
+ -- -fasm flags. If the default HscTarget is not HscC or HscAsm,
+ -- -fvia-C and -fasm have no effect.
+ let lang = case cli_mode of
+ DoInteractive -> HscInterpreted
+ DoEval _ -> HscInterpreted
+ _other -> hscTarget dflags0
+
+ let dflags1 = dflags0{ ghcMode = mode,
+ hscTarget = lang,
+ -- leave out hscOutName for now
+ hscOutName = panic "Main.main:hscOutName not set",
+ verbosity = case cli_mode of
+ DoEval _ -> 0
+ _other -> 1
+ }
+
+ -- The rest of the arguments are "dynamic"
+ -- Leftover ones are presumably files
+ (dflags2, fileish_args) <- GHC.parseDynamicFlags dflags1 argv2
+
+ -- make sure we clean up after ourselves
+ GHC.defaultCleanupHandler dflags2 $ do
+
+ -- Display banner
+ showBanner cli_mode dflags2
+
+ -- Read the package config(s), and process the package-related
+ -- command-line flags
+ dflags <- initPackages dflags2
+
+ -- we've finished manipulating the DynFlags, update the session
+ GHC.setSessionDynFlags session dflags
+
+ let
+ -- 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_args normal_fileish_paths [] []
+
+ -- Note: have v_Ld_inputs maintain the order in which 'objs' occurred on
+ -- the command-line.
+ mapM_ (consIORef v_Ld_inputs) (reverse objs)
+
+ ---------------- Display configuration -----------
+ when (verbosity dflags >= 4) $
+ dumpPackages dflags
+
+ when (verbosity dflags >= 3) $ do
+ hPutStrLn stderr ("Hsc static flags: " ++ unwords staticFlags)
+
+ ---------------- Final sanity checking -----------
+ checkOptions cli_mode dflags srcs objs
+
+ ---------------- Do the business -----------
+ case cli_mode of
+ ShowUsage -> showGhcUsage cli_mode
+ PrintLibdir -> do d <- getTopDir; putStrLn d
+ ShowVersion -> showVersion
+ ShowNumVersion -> putStrLn cProjectVersion
+ ShowInterface f -> showIface f
+ DoMake -> doMake session srcs
+ DoMkDependHS -> doMkDependHS session (map fst srcs)
+ StopBefore p -> oneShot dflags p srcs
+ DoInteractive -> interactiveUI session srcs Nothing
+ DoEval expr -> interactiveUI session srcs (Just expr)
+
+ exitWith ExitSuccess
+
+#ifndef GHCI
+interactiveUI _ _ _ =
+ throwDyn (CmdLineError "not built for interactive use")
#endif
- pgm <- getProgName
- writeIORef prog_name pgm
-
- argv <- getArgs
-
- -- grab any -B options from the command line first
- argv' <- setTopDir argv
- top_dir <- readIORef topDir
-
- let installed s = top_dir ++ s
- inplace s = top_dir ++ '/':cCURRENT_DIR ++ '/':s
-
- installed_pkgconfig = installed ("package.conf")
- inplace_pkgconfig = inplace (cGHC_DRIVER_DIR ++ "/package.conf.inplace")
-
- -- discover whether we're running in a build tree or in an installation,
- -- by looking for the package configuration file.
- am_installed <- doesFileExist installed_pkgconfig
-
- if am_installed
- then writeIORef path_pkgconfig installed_pkgconfig
- else do am_inplace <- doesFileExist inplace_pkgconfig
- if am_inplace
- then writeIORef path_pkgconfig inplace_pkgconfig
- else throw (OtherError "can't find package.conf")
-
- -- set the location of our various files
- if am_installed
- then do writeIORef path_usage (installed "ghc-usage.txt")
- writeIORef pgm_L (installed "unlit")
- writeIORef pgm_C (installed "hsc")
- writeIORef pgm_m (installed "ghc-asm")
- writeIORef pgm_s (installed "ghc-split")
-
- else do writeIORef path_usage (inplace (cGHC_DRIVER_DIR ++ '/':usage_file))
- writeIORef pgm_L (inplace cGHC_UNLIT)
- writeIORef pgm_C (inplace cGHC_HSC)
- writeIORef pgm_m (inplace cGHC_MANGLER)
- writeIORef pgm_s (inplace cGHC_SPLIT)
-
- -- read the package configuration
- conf_file <- readIORef path_pkgconfig
- 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 "
- hPutStrLn stderr booter_version)
-
- when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file))
-
- -- mkdependHS is special
- when (todo == DoMkDependHS) beginMkDependHS
-
- -- make is special
- when (todo == DoMake) beginMake
-
- -- 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")
+-- -----------------------------------------------------------------------------
+-- Splitting arguments into source files and object files. This is where we
+-- interpret the -x <suffix> option, and attach a (Maybe Phase) to each source
+-- file indicating the phase specified by the -x option in force, if any.
+
+partition_args [] srcs objs = (reverse srcs, reverse objs)
+partition_args ("-x":suff:args) srcs objs
+ | "none" <- suff = partition_args args srcs objs
+ | StopLn <- phase = partition_args args srcs (slurp ++ objs)
+ | otherwise = partition_args rest (these_srcs ++ srcs) objs
+ where phase = startPhase suff
+ (slurp,rest) = break (== "-x") args
+ these_srcs = zip slurp (repeat (Just phase))
+partition_args (arg:args) srcs objs
+ | looks_like_an_input arg = partition_args args ((arg,Nothing):srcs) objs
+ | otherwise = partition_args args srcs (arg:objs)
+
+ {-
+ 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 = isSourceFilename m
+ || looksLikeModuleName m
+ || '.' `notElem` m
+
+-- -----------------------------------------------------------------------------
+-- Option sanity checks
+
+checkOptions :: CmdLineMode -> DynFlags -> [(String,Maybe Phase)] -> [String] -> IO ()
+ -- Final sanity checking before kicking off a compilation (pipeline).
+checkOptions cli_mode dflags srcs objs = do
+ -- Complain about any unknown flags
+ let unknown_opts = [ f | (f@('-':_), _) <- srcs ]
+ when (notNull unknown_opts) (unknownFlagsErr unknown_opts)
+
+ -- -prof and --interactive are not a good combination
+ when (notNull (wayNames dflags) && isInterpretiveMode cli_mode) $
+ do throwDyn (UsageError
+ "--interactive can't be used with -prof, -ticky, -unreg or -smp.")
+ -- -ohi sanity check
+ if (isJust (outputHi dflags) &&
+ (isCompManagerMode cli_mode || 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)
-
- -- grab the last -B option on the command line, and
- -- set topDir to its value.
-setTopDir :: [String] -> IO [String]
-setTopDir args = do
- let (minusbs, others) = partition (prefixMatch "-B") args
- (case minusbs of
- [] -> writeIORef topDir clibdir
- some -> writeIORef topDir (drop 2 (last some)))
- return others
-
------------------------------------------------------------------------------
--- Which phase to stop at
-
-data ToDo = DoMkDependHS | DoMkDLL | StopBefore Phase | DoLink | DoInteractive
- 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 "--make" = Just $ DoMake
-todoFlag "--interactive" = Just $ DoInteractive
-todoFlag _ = Nothing
-
-getToDo :: [String]
- -> IO ( [String] -- rest of command line
- , ToDo
- , String -- "ToDo" 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, --make 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
+ if (srcs `lengthExceeds` 1 && isJust (outputFile dflags)
+ && not (isLinkMode cli_mode))
+ 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 <file>.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 && needsInputsMode cli_mode
+ 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 dflags
------------------------------------------------------------------------------
--- MkDependHS phase
-
-run_phase MkDependHS basename suff input_fn _output_fn = do
- src <- readFile input_fn
- let imports = getImports src
-
- 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
- -- ...
-
- -- (where .o is $osuf, and the other suffixes come from
- -- the cmdline -s options).
-
------------------------------------------------------------------------------
--- 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
+-- Compiler output options
------------------------------------------------------------------------------
--- 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-<blah>
- 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
- )
- )
+-- called to verify that the output files & directories
+-- point somewhere valid.
+--
+-- The assumption is that the directory portion of these output
+-- options will have to exist by the time 'verifyOutputFiles'
+-- is invoked.
+--
+verifyOutputFiles :: DynFlags -> IO ()
+verifyOutputFiles dflags = do
+ let odir = outputDir dflags
+ when (isJust odir) $ do
+ let dir = fromJust odir
+ flg <- doesDirectoryExist dir
+ when (not flg) (nonExistentDir "-odir" dir)
+ let ofile = outputFile dflags
+ when (isJust ofile) $ do
+ let fn = fromJust ofile
+ flg <- doesDirNameExist fn
+ when (not flg) (nonExistentDir "-o" fn)
+ let ohi = outputHi dflags
+ when (isJust ohi) $ do
+ let hi = fromJust ohi
+ flg <- doesDirNameExist hi
+ when (not flg) (nonExistentDir "-ohi" hi)
+ where
+ nonExistentDir flg dir =
+ throwDyn (CmdLineError ("error: directory portion of " ++
+ show dir ++ " does not exist (used with " ++
+ show flg ++ " option.)"))
-----------------------------------------------------------------------------
--- compatibility code
+-- GHC modes of operation
+
+data CmdLineMode
+ = ShowUsage -- ghc -?
+ | PrintLibdir -- ghc --print-libdir
+ | ShowVersion -- ghc -V/--version
+ | ShowNumVersion -- ghc --numeric-version
+ | ShowInterface String -- ghc --show-iface
+ | DoMkDependHS -- ghc -M
+ | StopBefore Phase -- ghc -E | -C | -S
+ -- StopBefore StopLn is the default
+ | DoMake -- ghc --make
+ | DoInteractive -- ghc --interactive
+ | DoEval String -- ghc -e
+ deriving (Show)
+
+isInteractiveMode, isInterpretiveMode :: CmdLineMode -> Bool
+isLinkMode, isCompManagerMode :: CmdLineMode -> Bool
+
+isInteractiveMode DoInteractive = True
+isInteractiveMode _ = False
+
+-- isInterpretiveMode: byte-code compiler involved
+isInterpretiveMode DoInteractive = True
+isInterpretiveMode (DoEval _) = True
+isInterpretiveMode _ = False
+
+needsInputsMode DoMkDependHS = True
+needsInputsMode (StopBefore _) = True
+needsInputsMode DoMake = True
+needsInputsMode _ = False
+
+-- True if we are going to attempt to link in this mode.
+-- (we might not actually link, depending on the GhcLink flag)
+isLinkMode (StopBefore StopLn) = True
+isLinkMode DoMake = True
+isLinkMode _ = False
+
+isCompManagerMode DoMake = True
+isCompManagerMode DoInteractive = True
+isCompManagerMode (DoEval _) = True
+isCompManagerMode _ = False
+
+
+-- -----------------------------------------------------------------------------
+-- Parsing the mode flag
+
+parseModeFlags :: [String] -> IO (CmdLineMode, [String])
+parseModeFlags args = do
+ let ((leftover, errs), (mode, _, flags)) =
+ runCmdLine (processArgs mode_flags args) (StopBefore StopLn, "", [])
+ when (not (null errs)) $ do
+ throwDyn (UsageError (unlines errs))
+ return (mode, flags ++ leftover)
+
+type ModeM a = CmdLineP (CmdLineMode, String, [String]) a
+ -- mode flags sometimes give rise to new DynFlags (eg. -C, see below)
+ -- so we collect the new ones and return them.
+
+mode_flags :: [(String, OptKind (CmdLineP (CmdLineMode, String, [String])))]
+mode_flags =
+ [ ------- help / version ----------------------------------------------
+ ( "?" , PassFlag (setMode ShowUsage))
+ , ( "-help" , PassFlag (setMode ShowUsage))
+ , ( "-print-libdir" , PassFlag (setMode PrintLibdir))
+ , ( "V" , PassFlag (setMode ShowVersion))
+ , ( "-version" , PassFlag (setMode ShowVersion))
+ , ( "-numeric-version", PassFlag (setMode ShowNumVersion))
+
+ ------- interfaces ----------------------------------------------------
+ , ( "-show-iface" , HasArg (\f -> setMode (ShowInterface f)
+ "--show-iface"))
+
+ ------- primary modes ------------------------------------------------
+ , ( "M" , PassFlag (setMode DoMkDependHS))
+ , ( "E" , PassFlag (setMode (StopBefore anyHsc)))
+ , ( "C" , PassFlag (\f -> do setMode (StopBefore HCc) f
+ addFlag "-fvia-C"))
+ , ( "S" , PassFlag (setMode (StopBefore As)))
+ , ( "-make" , PassFlag (setMode DoMake))
+ , ( "-interactive" , PassFlag (setMode DoInteractive))
+ , ( "e" , HasArg (\s -> setMode (DoEval s) "-e"))
+
+ -- -fno-code says to stop after Hsc but don't generate any code.
+ , ( "fno-code" , PassFlag (\f -> do setMode (StopBefore HCc) f
+ addFlag "-fno-code"
+ addFlag "-no-recomp"))
+ ]
+
+setMode :: CmdLineMode -> String -> ModeM ()
+setMode m flag = do
+ (old_mode, old_flag, flags) <- getCmdLineState
+ when (notNull old_flag && flag /= old_flag) $
+ throwDyn (UsageError
+ ("cannot use `" ++ old_flag ++ "' with `" ++ flag ++ "'"))
+ putCmdLineState (m, flag, flags)
+
+addFlag :: String -> ModeM ()
+addFlag s = do
+ (m, f, flags) <- getCmdLineState
+ putCmdLineState (m, f, s:flags)
+
+
+-- ----------------------------------------------------------------------------
+-- Run --make mode
+
+doMake :: Session -> [(String,Maybe Phase)] -> IO ()
+doMake sess [] = throwDyn (UsageError "no input files")
+doMake sess srcs = do
+ let (hs_srcs, non_hs_srcs) = partition haskellish srcs
+
+ haskellish (f,Nothing) =
+ looksLikeModuleName f || isHaskellSrcFilename f || '.' `notElem` f
+ haskellish (f,Just phase) =
+ phase `notElem` [As, Cc, CmmCpp, Cmm, StopLn]
+
+ dflags <- GHC.getSessionDynFlags sess
+ o_files <- mapM (compileFile dflags StopLn) non_hs_srcs
+ mapM_ (consIORef v_Ld_inputs) (reverse o_files)
+
+ targets <- mapM (uncurry GHC.guessTarget) hs_srcs
+ GHC.setTargets sess targets
+ ok_flag <- GHC.load sess LoadAllTargets
+ when (failed ok_flag) (exitWith (ExitFailure 1))
+ return ()
+
+-- ---------------------------------------------------------------------------
+-- Various banners and verbosity output.
+
+showBanner :: CmdLineMode -> DynFlags -> IO ()
+showBanner cli_mode dflags = do
+ let verb = verbosity dflags
+ -- Show the GHCi banner
+# ifdef GHCI
+ when (isInteractiveMode cli_mode && verb >= 1) $
+ hPutStrLn stdout ghciWelcomeMsg
+# endif
+
+ -- Display details of the configuration in verbose mode
+ when (not (isInteractiveMode cli_mode) && verb >= 2) $
+ do hPutStr stderr "Glasgow Haskell Compiler, Version "
+ hPutStr stderr cProjectVersion
+ hPutStr stderr ", for Haskell 98, compiled by GHC version "
+ hPutStrLn stderr cBooterVersion
+
+showVersion :: IO ()
+showVersion = do
+ putStrLn (cProjectName ++ ", version " ++ cProjectVersion)
+ exitWith ExitSuccess
+
+showGhcUsage cli_mode = do
+ (ghc_usage_path,ghci_usage_path) <- getUsageMsgPaths
+ let usage_path
+ | DoInteractive <- cli_mode = ghci_usage_path
+ | otherwise = ghc_usage_path
+ usage <- readFile usage_path
+ dump usage
+ exitWith ExitSuccess
+ where
+ dump "" = return ()
+ dump ('$':'$':s) = hPutStr stderr progName >> dump s
+ dump (c:s) = hPutChar stderr c >> dump s
-#if __GLASGOW_HASKELL__ <= 408
-catchJust = catchIO
-ioErrors = justIoErrors
-#endif
+-- -----------------------------------------------------------------------------
+-- Util
-#ifdef mingw32_TARGET_OS
-foreign import "_getpid" getProcessID :: IO Int
-#endif
+unknownFlagsErr :: [String] -> a
+unknownFlagsErr fs = throwDyn (UsageError ("unrecognised flags: " ++ unwords fs))
projects / ghc-hetmet.git / blobdiff