1 {-# OPTIONS -W -fno-warn-incomplete-patterns #-}
2 -----------------------------------------------------------------------------
3 -- $Id: Main.hs,v 1.8 2000/10/24 16:08:16 simonmar Exp $
7 -- (c) Simon Marlow 2000
9 -----------------------------------------------------------------------------
11 -- with path so that ghc -M can find config.h
12 #include "../includes/config.h"
14 module Main (main) where
16 #include "HsVersions.h"
29 #ifndef mingw32_TARGET_OS
43 -----------------------------------------------------------------------------
46 -- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a
47 -- dynamic flag whereas -package is a static flag.)
49 -----------------------------------------------------------------------------
52 -- new mkdependHS doesn't support all the options that the old one did (-X et al.)
53 -- time commands when run with -v
58 -- Win32 support: proper signal handling
59 -- make sure OPTIONS in .hs file propogate to .hc file if -C or -keep-hc-file-too
60 -- reading the package configuration file is too slow
61 -- -H, -K, -Rghc-timing
64 -----------------------------------------------------------------------------
65 -- Differences vs. old driver:
67 -- No more "Enter your Haskell program, end with ^D (on a line of its own):"
68 -- consistency checking removed (may do this properly later)
70 -- no hi diffs (could be added later)
73 -----------------------------------------------------------------------------
77 -- all error messages are propagated as exceptions
78 handleDyn (\dyn -> case dyn of
79 PhaseFailed _phase code -> exitWith code
80 Interrupted -> exitWith (ExitFailure 1)
81 _ -> do hPutStrLn stderr (show (dyn :: BarfKind))
82 exitWith (ExitFailure 1)
85 -- make sure we clean up after ourselves
86 later (do forget_it <- readIORef keep_tmp_files
88 verb <- readIORef verbose
91 -- exceptions will be blocked while we clean the temporary files,
92 -- so there shouldn't be any difficulty if we receive further
95 -- install signal handlers
96 main_thread <- myThreadId
98 #ifndef mingw32_TARGET_OS
99 let sig_handler = Catch (throwTo main_thread
100 (DynException (toDyn Interrupted)))
101 installHandler sigQUIT sig_handler Nothing
102 installHandler sigINT sig_handler Nothing
106 writeIORef prog_name pgm
110 -- grab any -B options from the command line first
111 argv' <- setTopDir argv
112 top_dir <- readIORef topDir
114 let installed s = top_dir ++ s
115 inplace s = top_dir ++ '/':cCURRENT_DIR ++ '/':s
117 installed_pkgconfig = installed ("package.conf")
118 inplace_pkgconfig = inplace (cGHC_DRIVER_DIR ++ "/package.conf.inplace")
120 -- discover whether we're running in a build tree or in an installation,
121 -- by looking for the package configuration file.
122 am_installed <- doesFileExist installed_pkgconfig
125 then writeIORef path_package_config installed_pkgconfig
126 else do am_inplace <- doesFileExist inplace_pkgconfig
128 then writeIORef path_package_config inplace_pkgconfig
129 else throwDyn (OtherError "can't find package.conf")
131 -- set the location of our various files
133 then do writeIORef path_usage (installed "ghc-usage.txt")
134 writeIORef pgm_L (installed "unlit")
135 writeIORef pgm_m (installed "ghc-asm")
136 writeIORef pgm_s (installed "ghc-split")
138 else do writeIORef path_usage (inplace (cGHC_DRIVER_DIR ++ "/ghc-usage.txt"))
139 writeIORef pgm_L (inplace cGHC_UNLIT)
140 writeIORef pgm_m (inplace cGHC_MANGLER)
141 writeIORef pgm_s (inplace cGHC_SPLIT)
143 -- read the package configuration
144 conf_file <- readIORef path_package_config
145 contents <- readFile conf_file
146 writeIORef package_details (read contents)
148 -- find the phase to stop after (i.e. -E, -C, -c, -S flags)
149 (flags2, mode, stop_flag) <- getGhcMode argv'
150 writeIORef v_GhcMode mode
152 -- process all the other arguments, and get the source files
153 non_static <- processArgs static_flags flags2 []
155 -- find the build tag, and re-process the build-specific options
156 more_opts <- findBuildTag
157 _ <- processArgs static_flags more_opts []
159 -- give the static flags to hsc
160 static_opts <- buildStaticHscOpts
161 writeIORef static_hsc_opts static_opts
163 -- build the default DynFlags (these may be adjusted on a per
164 -- module basis by OPTIONS pragmas and settings in the interpreter).
166 core_todo <- buildCoreToDo
167 stg_todo <- buildStgToDo
169 lang <- readIORef hsc_lang
170 writeIORef v_DynFlags
171 DynFlags{ coreToDo = core_todo,
174 -- leave out hscOutName for now
178 warn_level <- readIORef warning_opt
179 let warn_opts = case warn_level of
180 W_default -> standardWarnings
182 W_all -> minusWallOpts
185 -- the rest of the arguments are "dynamic"
186 srcs <- processArgs dynamic_flags non_static []
187 -- save the "initial DynFlags" away
188 dyn_flags <- readIORef v_DynFlags
189 writeIORef v_InitDynFlags
191 -- complain about any unknown flags
192 let unknown_flags = [ f | ('-':f) <- srcs ]
193 mapM unknownFlagErr unknown_flags
196 verb <- readIORef verbose
198 when verb (do hPutStr stderr "Glasgow Haskell Compiler, Version "
199 hPutStr stderr version_str
200 hPutStr stderr ", for Haskell 98, compiled by GHC version "
201 hPutStrLn stderr booter_version)
203 when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file))
205 -- mkdependHS is special
206 when (mode == DoMkDependHS) beginMkDependHS
209 when (mode == DoMake) beginMake
211 -- for each source file, find which phases to run
212 pipelines <- mapM (genPipeline mode stop_flag) srcs
213 let src_pipelines = zip srcs pipelines
215 o_file <- readIORef output_file
216 if isJust o_file && mode /= DoLink && length srcs > 1
217 then throwDyn (UsageError "can't apply -o option to multiple source files")
220 if null srcs then throwDyn (UsageError "no input files") else do
222 -- save the flag state, because this could be modified by OPTIONS pragmas
223 -- during the compilation, and we'll need to restore it before starting
224 -- the next compilation.
225 saved_driver_state <- readIORef driver_state
227 let compileFile (src, phases) = do
228 r <- runPipeline phases src (mode==DoLink) True
229 writeIORef driver_state saved_driver_state
232 o_files <- mapM compileFile src_pipelines
234 when (mode == DoMkDependHS) endMkDependHS
235 when (mode == DoLink) (doLink o_files)
237 -- grab the last -B option on the command line, and
238 -- set topDir to its value.
239 setTopDir :: [String] -> IO [String]
241 let (minusbs, others) = partition (prefixMatch "-B") args
243 [] -> writeIORef topDir clibdir
244 some -> writeIORef topDir (drop 2 (last some)))
247 beginMake = panic "`ghc --make' unimplemented"
249 -----------------------------------------------------------------------------
250 -- compatibility code
252 #if __GLASGOW_HASKELL__ <= 408
254 ioErrors = justIoErrors
255 throwTo = raiseInThread
258 #ifdef mingw32_TARGET_OS
259 foreign import "_getpid" getProcessID :: IO Int