1 {-# OPTIONS -W -fno-warn-incomplete-patterns #-}
2 -----------------------------------------------------------------------------
3 -- $Id: Main.hs,v 1.11 2000/10/26 16:51:44 sewardj 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"
23 import DriverPhases ( Phase(..) )
24 import CmdLineOpts ( HscLang(..), DynFlags(..), v_Static_hsc_opts )
31 #ifndef mingw32_TARGET_OS
47 -----------------------------------------------------------------------------
50 -- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a
51 -- dynamic flag whereas -package is a static flag.)
53 -----------------------------------------------------------------------------
56 -- new mkdependHS doesn't support all the options that the old one did (-X et al.)
57 -- time commands when run with -v
62 -- Win32 support: proper signal handling
63 -- make sure OPTIONS in .hs file propogate to .hc file if -C or -keep-hc-file-too
64 -- reading the package configuration file is too slow
65 -- -H, -K, -Rghc-timing
68 -----------------------------------------------------------------------------
69 -- Differences vs. old driver:
71 -- No more "Enter your Haskell program, end with ^D (on a line of its own):"
72 -- consistency checking removed (may do this properly later)
74 -- no hi diffs (could be added later)
77 -----------------------------------------------------------------------------
81 -- all error messages are propagated as exceptions
82 handleDyn (\dyn -> case dyn of
83 PhaseFailed _phase code -> exitWith code
84 Interrupted -> exitWith (ExitFailure 1)
85 _ -> do hPutStrLn stderr (show (dyn :: BarfKind))
86 exitWith (ExitFailure 1)
89 -- make sure we clean up after ourselves
90 later (do forget_it <- readIORef v_Keep_tmp_files
92 verb <- readIORef v_Verbose
95 -- exceptions will be blocked while we clean the temporary files,
96 -- so there shouldn't be any difficulty if we receive further
99 -- install signal handlers
100 main_thread <- myThreadId
101 #ifndef mingw32_TARGET_OS
102 let sig_handler = Catch (throwTo main_thread
103 (DynException (toDyn Interrupted)))
104 installHandler sigQUIT sig_handler Nothing
105 installHandler sigINT sig_handler Nothing
109 writeIORef v_Prog_name pgm
113 -- grab any -B options from the command line first
114 argv' <- setTopDir argv
115 top_dir <- readIORef v_TopDir
117 let installed s = top_dir ++ s
118 inplace s = top_dir ++ '/':cCURRENT_DIR ++ '/':s
120 installed_pkgconfig = installed ("package.conf")
121 inplace_pkgconfig = inplace (cGHC_DRIVER_DIR ++ "/package.conf.inplace")
123 -- discover whether we're running in a build tree or in an installation,
124 -- by looking for the package configuration file.
125 am_installed <- doesFileExist installed_pkgconfig
128 then writeIORef v_Path_package_config installed_pkgconfig
129 else do am_inplace <- doesFileExist inplace_pkgconfig
131 then writeIORef v_Path_package_config inplace_pkgconfig
132 else throwDyn (OtherError "can't find package.conf")
134 -- set the location of our various files
136 then do writeIORef v_Path_usage (installed "ghc-usage.txt")
137 writeIORef v_Pgm_L (installed "unlit")
138 writeIORef v_Pgm_m (installed "ghc-asm")
139 writeIORef v_Pgm_s (installed "ghc-split")
141 else do writeIORef v_Path_usage (inplace (cGHC_DRIVER_DIR ++ "/ghc-usage.txt"))
142 writeIORef v_Pgm_L (inplace cGHC_UNLIT)
143 writeIORef v_Pgm_m (inplace cGHC_MANGLER)
144 writeIORef v_Pgm_s (inplace cGHC_SPLIT)
146 -- read the package configuration
147 conf_file <- readIORef v_Path_package_config
148 contents <- readFile conf_file
149 writeIORef v_Package_details (read contents)
151 -- find the phase to stop after (i.e. -E, -C, -c, -S flags)
152 (flags2, mode, stop_flag) <- getGhcMode argv'
153 writeIORef v_GhcMode mode
155 -- force lang to "C" if the -C flag was given
156 case mode of StopBefore HCc -> writeIORef v_Hsc_Lang HscC
159 -- process all the other arguments, and get the source files
160 non_static <- processArgs static_flags flags2 []
162 -- find the build tag, and re-process the build-specific options
163 more_opts <- findBuildTag
164 _ <- processArgs static_flags more_opts []
166 -- give the static flags to hsc
167 static_opts <- buildStaticHscOpts
168 writeIORef v_Static_hsc_opts static_opts
171 warn_level <- readIORef v_Warning_opt
173 let warn_opts = case warn_level of
174 W_default -> standardWarnings
176 W_all -> minusWallOpts
179 -- build the default DynFlags (these may be adjusted on a per
180 -- module basis by OPTIONS pragmas and settings in the interpreter).
182 core_todo <- buildCoreToDo
183 stg_todo <- buildStgToDo
185 lang <- readIORef v_Hsc_Lang
186 writeIORef v_DynFlags
187 DynFlags{ coreToDo = core_todo,
190 -- leave out hscOutName for now
193 -- the rest of the arguments are "dynamic"
194 srcs <- processArgs dynamic_flags non_static []
195 -- save the "initial DynFlags" away
196 dyn_flags <- readIORef v_DynFlags
197 writeIORef v_InitDynFlags dyn_flags
199 -- complain about any unknown flags
200 let unknown_flags = [ f | ('-':f) <- srcs ]
201 mapM unknownFlagErr unknown_flags
204 verb <- readIORef v_Verbose
206 when verb (do hPutStr stderr "Glasgow Haskell Compiler, Version "
207 hPutStr stderr version_str
208 hPutStr stderr ", for Haskell 98, compiled by GHC version "
209 hPutStrLn stderr booter_version)
211 when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file))
213 -- mkdependHS is special
214 when (mode == DoMkDependHS) beginMkDependHS
217 when (mode == DoMake) beginMake
219 -- for each source file, find which phases to run
220 pipelines <- mapM (genPipeline mode stop_flag) srcs
221 let src_pipelines = zip srcs pipelines
223 o_file <- readIORef v_Output_file
224 if isJust o_file && mode /= DoLink && length srcs > 1
225 then throwDyn (UsageError "can't apply -o option to multiple source files")
228 if null srcs then throwDyn (UsageError "no input files") else do
230 -- save the flag state, because this could be modified by OPTIONS pragmas
231 -- during the compilation, and we'll need to restore it before starting
232 -- the next compilation.
233 saved_driver_state <- readIORef v_Driver_state
235 let compileFile (src, phases) = do
236 r <- runPipeline phases src (mode==DoLink) True
237 writeIORef v_Driver_state saved_driver_state
240 o_files <- mapM compileFile src_pipelines
242 when (mode == DoMkDependHS) endMkDependHS
243 when (mode == DoLink) (doLink o_files)
245 -- grab the last -B option on the command line, and
246 -- set topDir to its value.
247 setTopDir :: [String] -> IO [String]
249 let (minusbs, others) = partition (prefixMatch "-B") args
251 [] -> writeIORef v_TopDir clibdir
252 some -> writeIORef v_TopDir (drop 2 (last some)))
255 beginMake = panic "`ghc --make' unimplemented"
257 -----------------------------------------------------------------------------
258 -- compatibility code
260 #if __GLASGOW_HASKELL__ <= 408
262 ioErrors = justIoErrors
263 throwTo = raiseInThread
266 #ifdef mingw32_TARGET_OS
267 foreign import "_getpid" getProcessID :: IO Int