1 {-# OPTIONS -W -fno-warn-incomplete-patterns #-}
2 -----------------------------------------------------------------------------
3 -- $Id: Main.hs,v 1.24 2000/11/16 15:57:06 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 import DriverPhases ( Phase(..) )
30 import CmdLineOpts ( HscLang(..), DynFlags(..), v_Static_hsc_opts )
31 import Module ( mkModuleName )
33 import Finder ( initFinder )
39 #ifndef mingw32_TARGET_OS
54 -----------------------------------------------------------------------------
57 -- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a
58 -- dynamic flag whereas -package is a static flag.)
60 -----------------------------------------------------------------------------
64 -- new mkdependHS doesn't support all the options that the old one did (-X et al.)
65 -- time commands when run with -v
70 -- Win32 support: proper signal handling
71 -- make sure OPTIONS in .hs file propogate to .hc file if -C or -keep-hc-file-too
72 -- reading the package configuration file is too slow
73 -- -H, -K, -Rghc-timing
76 -----------------------------------------------------------------------------
77 -- Differences vs. old driver:
79 -- No more "Enter your Haskell program, end with ^D (on a line of its own):"
80 -- consistency checking removed (may do this properly later)
82 -- no hi diffs (could be added later)
85 -----------------------------------------------------------------------------
89 -- all error messages are propagated as exceptions
90 handleDyn (\dyn -> case dyn of
91 PhaseFailed _phase code -> exitWith code
92 Interrupted -> exitWith (ExitFailure 1)
93 _ -> do hPutStrLn stderr (show (dyn :: BarfKind))
94 exitWith (ExitFailure 1)
97 -- make sure we clean up after ourselves
98 later (do forget_it <- readIORef v_Keep_tmp_files
100 verb <- readIORef v_Verbose
103 -- exceptions will be blocked while we clean the temporary files,
104 -- so there shouldn't be any difficulty if we receive further
107 -- install signal handlers
108 main_thread <- myThreadId
109 #ifndef mingw32_TARGET_OS
110 let sig_handler = Catch (throwTo main_thread
111 (DynException (toDyn Interrupted)))
112 installHandler sigQUIT sig_handler Nothing
113 installHandler sigINT sig_handler Nothing
117 writeIORef v_Prog_name pgm
121 -- grab any -B options from the command line first
122 argv' <- setTopDir argv
123 top_dir <- readIORef v_TopDir
125 let installed s = top_dir ++ '/':s
126 inplace s = top_dir ++ '/':cCURRENT_DIR ++ '/':s
128 installed_pkgconfig = installed ("package.conf")
129 inplace_pkgconfig = inplace (cGHC_DRIVER_DIR ++ "/package.conf.inplace")
131 -- discover whether we're running in a build tree or in an installation,
132 -- by looking for the package configuration file.
133 am_installed <- doesFileExist installed_pkgconfig
136 then writeIORef v_Path_package_config installed_pkgconfig
137 else do am_inplace <- doesFileExist inplace_pkgconfig
139 then writeIORef v_Path_package_config inplace_pkgconfig
140 else throwDyn (OtherError "can't find package.conf")
142 -- set the location of our various files
144 then do writeIORef v_Path_usage (installed "ghc-usage.txt")
145 writeIORef v_Pgm_L (installed "unlit")
146 writeIORef v_Pgm_m (installed "ghc-asm")
147 writeIORef v_Pgm_s (installed "ghc-split")
149 else do writeIORef v_Path_usage (inplace (cGHC_DRIVER_DIR ++ "/ghc-usage.txt"))
150 writeIORef v_Pgm_L (inplace cGHC_UNLIT)
151 writeIORef v_Pgm_m (inplace cGHC_MANGLER)
152 writeIORef v_Pgm_s (inplace cGHC_SPLIT)
154 -- read the package configuration
155 conf_file <- readIORef v_Path_package_config
156 contents <- readFile conf_file
157 let pkg_details = read contents -- ToDo: faster
158 writeIORef v_Package_details pkg_details
160 -- find the phase to stop after (i.e. -E, -C, -c, -S flags)
161 (flags2, mode, stop_flag) <- getGhcMode argv'
162 writeIORef v_GhcMode mode
164 -- process all the other arguments, and get the source files
165 non_static <- processArgs static_flags flags2 []
167 -- find the build tag, and re-process the build-specific options
168 more_opts <- findBuildTag
169 way_non_static <- processArgs static_flags more_opts []
171 -- give the static flags to hsc
172 static_opts <- buildStaticHscOpts
173 writeIORef v_Static_hsc_opts static_opts
176 warn_level <- readIORef v_Warning_opt
178 let warn_opts = case warn_level of
179 W_default -> standardWarnings
181 W_all -> minusWallOpts
184 -- build the default DynFlags (these may be adjusted on a per
185 -- module basis by OPTIONS pragmas and settings in the interpreter).
187 core_todo <- buildCoreToDo
188 stg_todo <- buildStgToDo
190 -- set the "global" HscLang. The HscLang can be further adjusted on a module
191 -- by module basis, using only the -fvia-C and -fasm flags. If the global
192 -- HscLang is not HscC or HscAsm, -fvia-C and -fasm have no effect.
193 opt_level <- readIORef v_OptLevel
194 let lang = case mode of
195 StopBefore HCc -> HscC
196 DoInteractive -> HscInterpreted
197 _other | opt_level >= 1 -> HscC -- -O implies -fvia-C
198 | otherwise -> defaultHscLang
200 writeIORef v_DynFlags
201 DynFlags{ coreToDo = core_todo,
204 -- leave out hscOutName for now
205 hscOutName = panic "Main.main:hscOutName not set",
208 -- the rest of the arguments are "dynamic"
209 srcs <- processArgs dynamic_flags (way_non_static ++
210 non_static ++ warn_opts) []
211 -- save the "initial DynFlags" away
212 init_dyn_flags <- readIORef v_DynFlags
213 writeIORef v_InitDynFlags init_dyn_flags
215 -- complain about any unknown flags
216 mapM unknownFlagErr [ f | f@('-':_) <- srcs ]
219 verb <- readIORef v_Verbose
221 when verb (do hPutStr stderr "Glasgow Haskell Compiler, Version "
222 hPutStr stderr cProjectVersion
223 hPutStr stderr ", for Haskell 98, compiled by GHC version "
224 hPutStrLn stderr cBooterVersion)
226 when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file))
228 -- initialise the finder
229 initFinder pkg_details
231 -- mkdependHS is special
232 when (mode == DoMkDependHS) beginMkDependHS
234 -- make/interactive require invoking the compilation manager
235 if (mode == DoMake) then beginMake pkg_details srcs else do
236 if (mode == DoInteractive) then beginInteractive pkg_details srcs else do
238 -- for each source file, find which phases to run
239 let lang = hscLang init_dyn_flags
240 pipelines <- mapM (genPipeline mode stop_flag True lang) srcs
241 let src_pipelines = zip srcs pipelines
244 o_file <- readIORef v_Output_file
245 ohi <- readIORef v_Output_hi
246 if length srcs > 1 && (isJust ohi || (isJust o_file && mode /= DoLink))
247 then throwDyn (UsageError "can't apply -o or -ohi options to multiple source files")
250 if null srcs then throwDyn (UsageError "no input files") else do
252 -- save the flag state, because this could be modified by OPTIONS
253 -- pragmas during the compilation, and we'll need to restore it
254 -- before starting the next compilation.
255 saved_driver_state <- readIORef v_Driver_state
257 let compileFile (src, phases) = do
258 writeIORef v_Driver_state saved_driver_state
259 writeIORef v_DynFlags init_dyn_flags
260 r <- runPipeline phases src (mode==DoLink) True
263 o_files <- mapM compileFile src_pipelines
265 when (mode == DoMkDependHS) endMkDependHS
266 when (mode == DoLink) (doLink o_files)
268 -- grab the last -B option on the command line, and
269 -- set topDir to its value.
270 setTopDir :: [String] -> IO [String]
272 let (minusbs, others) = partition (prefixMatch "-B") args
274 [] -> writeIORef v_TopDir clibdir
275 some -> writeIORef v_TopDir (drop 2 (last some)))
278 beginMake :: PackageConfigInfo -> [String] -> IO ()
279 beginMake pkg_details mods
281 [] -> throwDyn (UsageError "no input files")
282 [mod] -> do state <- cmInit pkg_details Batch
283 cmLoadModule state (mkModuleName mod)
285 _ -> throwDyn (UsageError "only one module allowed with --make")
288 beginInteractive = throwDyn (OtherError "not build for interactive use")
290 beginInteractive pkg_details mods
291 = do state <- cmInit pkg_details Interactive
294 [mod] -> do cmLoadModule state (mkModuleName mod); return ()
295 _ -> throwDyn (UsageError
296 "only one module allowed with --interactive")