1 {-# OPTIONS -W -fno-warn-incomplete-patterns #-}
2 -----------------------------------------------------------------------------
3 -- $Id: Main.hs,v 1.13 2000/10/27 13:50:25 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 )
26 import Finder ( initFinder )
27 import CmStaticInfo ( mkPCI )
33 #ifndef mingw32_TARGET_OS
48 -----------------------------------------------------------------------------
51 -- * -fglasgow-exts NO LONGER IMPLIES -package lang!!! (-fglasgow-exts is a
52 -- dynamic flag whereas -package is a static flag.)
54 -----------------------------------------------------------------------------
57 -- new mkdependHS doesn't support all the options that the old one did (-X et al.)
58 -- time commands when run with -v
63 -- Win32 support: proper signal handling
64 -- make sure OPTIONS in .hs file propogate to .hc file if -C or -keep-hc-file-too
65 -- reading the package configuration file is too slow
66 -- -H, -K, -Rghc-timing
69 -----------------------------------------------------------------------------
70 -- Differences vs. old driver:
72 -- No more "Enter your Haskell program, end with ^D (on a line of its own):"
73 -- consistency checking removed (may do this properly later)
75 -- no hi diffs (could be added later)
78 -----------------------------------------------------------------------------
82 -- all error messages are propagated as exceptions
83 handleDyn (\dyn -> case dyn of
84 PhaseFailed _phase code -> exitWith code
85 Interrupted -> exitWith (ExitFailure 1)
86 _ -> do hPutStrLn stderr (show (dyn :: BarfKind))
87 exitWith (ExitFailure 1)
90 -- make sure we clean up after ourselves
91 later (do forget_it <- readIORef v_Keep_tmp_files
93 verb <- readIORef v_Verbose
96 -- exceptions will be blocked while we clean the temporary files,
97 -- so there shouldn't be any difficulty if we receive further
100 -- install signal handlers
101 main_thread <- myThreadId
102 #ifndef mingw32_TARGET_OS
103 let sig_handler = Catch (throwTo main_thread
104 (DynException (toDyn Interrupted)))
105 installHandler sigQUIT sig_handler Nothing
106 installHandler sigINT sig_handler Nothing
110 writeIORef v_Prog_name pgm
114 -- grab any -B options from the command line first
115 argv' <- setTopDir argv
116 top_dir <- readIORef v_TopDir
118 let installed s = top_dir ++ '/':s
119 inplace s = top_dir ++ '/':cCURRENT_DIR ++ '/':s
121 installed_pkgconfig = installed ("package.conf")
122 inplace_pkgconfig = inplace (cGHC_DRIVER_DIR ++ "/package.conf.inplace")
124 -- discover whether we're running in a build tree or in an installation,
125 -- by looking for the package configuration file.
126 am_installed <- doesFileExist installed_pkgconfig
129 then writeIORef v_Path_package_config installed_pkgconfig
130 else do am_inplace <- doesFileExist inplace_pkgconfig
132 then writeIORef v_Path_package_config inplace_pkgconfig
133 else throwDyn (OtherError "can't find package.conf")
135 -- set the location of our various files
137 then do writeIORef v_Path_usage (installed "ghc-usage.txt")
138 writeIORef v_Pgm_L (installed "unlit")
139 writeIORef v_Pgm_m (installed "ghc-asm")
140 writeIORef v_Pgm_s (installed "ghc-split")
142 else do writeIORef v_Path_usage (inplace (cGHC_DRIVER_DIR ++ "/ghc-usage.txt"))
143 writeIORef v_Pgm_L (inplace cGHC_UNLIT)
144 writeIORef v_Pgm_m (inplace cGHC_MANGLER)
145 writeIORef v_Pgm_s (inplace cGHC_SPLIT)
147 -- read the package configuration
148 conf_file <- readIORef v_Path_package_config
149 contents <- readFile conf_file
150 writeIORef v_Package_details (read contents)
152 -- find the phase to stop after (i.e. -E, -C, -c, -S flags)
153 (flags2, mode, stop_flag) <- getGhcMode argv'
154 writeIORef v_GhcMode mode
156 -- force lang to "C" if the -C flag was given
157 case mode of StopBefore HCc -> writeIORef v_Hsc_Lang HscC
160 -- process all the other arguments, and get the source files
161 non_static <- processArgs static_flags flags2 []
163 -- find the build tag, and re-process the build-specific options
164 more_opts <- findBuildTag
165 _ <- processArgs static_flags more_opts []
167 -- give the static flags to hsc
168 static_opts <- buildStaticHscOpts
169 writeIORef v_Static_hsc_opts static_opts
172 warn_level <- readIORef v_Warning_opt
174 let warn_opts = case warn_level of
175 W_default -> standardWarnings
177 W_all -> minusWallOpts
180 -- build the default DynFlags (these may be adjusted on a per
181 -- module basis by OPTIONS pragmas and settings in the interpreter).
183 core_todo <- buildCoreToDo
184 stg_todo <- buildStgToDo
186 lang <- readIORef v_Hsc_Lang
187 writeIORef v_DynFlags
188 DynFlags{ coreToDo = core_todo,
191 -- leave out hscOutName for now
194 -- the rest of the arguments are "dynamic"
195 srcs <- processArgs dynamic_flags non_static []
196 -- save the "initial DynFlags" away
197 dyn_flags <- readIORef v_DynFlags
198 writeIORef v_InitDynFlags dyn_flags
200 -- complain about any unknown flags
201 let unknown_flags = [ f | ('-':f) <- srcs ]
202 mapM unknownFlagErr unknown_flags
205 verb <- readIORef v_Verbose
207 when verb (do hPutStr stderr "Glasgow Haskell Compiler, Version "
208 hPutStr stderr version_str
209 hPutStr stderr ", for Haskell 98, compiled by GHC version "
210 hPutStrLn stderr booter_version)
212 when verb (hPutStrLn stderr ("Using package config file: " ++ conf_file))
214 -- initialise the finder
215 pkg_details <- readIORef v_Package_details
216 pci <- mkPCI pkg_details
219 -- mkdependHS is special
220 when (mode == DoMkDependHS) beginMkDependHS
223 when (mode == DoMake) beginMake
225 -- for each source file, find which phases to run
226 pipelines <- mapM (genPipeline mode stop_flag) srcs
227 let src_pipelines = zip srcs pipelines
229 o_file <- readIORef v_Output_file
230 if isJust o_file && mode /= DoLink && length srcs > 1
231 then throwDyn (UsageError "can't apply -o option to multiple source files")
234 if null srcs then throwDyn (UsageError "no input files") else do
236 -- save the flag state, because this could be modified by OPTIONS pragmas
237 -- during the compilation, and we'll need to restore it before starting
238 -- the next compilation.
239 saved_driver_state <- readIORef v_Driver_state
241 let compileFile (src, phases) = do
242 r <- runPipeline phases src (mode==DoLink) True
243 writeIORef v_Driver_state saved_driver_state
246 o_files <- mapM compileFile src_pipelines
248 when (mode == DoMkDependHS) endMkDependHS
249 when (mode == DoLink) (doLink o_files)
251 -- grab the last -B option on the command line, and
252 -- set topDir to its value.
253 setTopDir :: [String] -> IO [String]
255 let (minusbs, others) = partition (prefixMatch "-B") args
257 [] -> writeIORef v_TopDir clibdir
258 some -> writeIORef v_TopDir (drop 2 (last some)))
261 beginMake = panic "`ghc --make' unimplemented"