1 -----------------------------------------------------------------------------
5 -- (c) The University of Glasgow 2000-2003
7 -----------------------------------------------------------------------------
17 processArgs, OptKind(..), -- for DriverMkDepend only
20 #include "HsVersions.h"
22 import MkIface ( showIface )
31 import FastString ( mkFastString )
34 import DATA_IOREF ( IORef, readIORef, writeIORef )
36 import System ( exitWith, ExitCode(..) )
42 -----------------------------------------------------------------------------
45 -- Flag parsing is now done in stages:
47 -- * parse the initial list of flags and remove any flags understood
48 -- by the driver only. Determine whether we're in multi-compilation
49 -- or single-compilation mode (done in Main.main).
51 -- * gather the list of "static" hsc flags, and assign them to the global
52 -- static hsc flags variable.
54 -- * build the inital DynFlags from the remaining flags.
56 -- * complain if we've got any flags left over.
58 -- * for each source file: grab the OPTIONS, and build a new DynFlags
59 -- to pass to the compiler.
61 -----------------------------------------------------------------------------
62 -- Process command-line
64 processStaticFlags :: [String] -> IO [String]
65 processStaticFlags opts = processArgs static_flags opts []
68 = NoArg (IO ()) -- flag with no argument
69 | HasArg (String -> IO ()) -- flag has an argument (maybe prefix)
70 | SepArg (String -> IO ()) -- flag has a separate argument
71 | Prefix (String -> IO ()) -- flag is a prefix only
72 | OptPrefix (String -> IO ()) -- flag may be a prefix
73 | AnySuffix (String -> IO ()) -- flag is a prefix, pass whole arg to fn
74 | PassFlag (String -> IO ()) -- flag with no arg, pass flag to fn
75 | PrefixPred (String -> Bool) (String -> IO ())
76 | AnySuffixPred (String -> Bool) (String -> IO ())
78 processArgs :: [(String,OptKind)] -> [String] -> [String]
79 -> IO [String] -- returns spare args
80 processArgs _spec [] spare = return (reverse spare)
82 processArgs spec args@(('-':arg):args') spare = do
83 case findArg spec arg of
84 Just (rest,action) -> do args' <- processOneArg action rest args
85 processArgs spec args' spare
86 Nothing -> processArgs spec args' (('-':arg):spare)
88 processArgs spec (arg:args) spare =
89 processArgs spec args (arg:spare)
91 processOneArg :: OptKind -> String -> [String] -> IO [String]
92 processOneArg action rest (dash_arg@('-':arg):args) =
96 then io >> return args
97 else unknownFlagErr dash_arg
101 then fio rest >> return args
103 [] -> missingArgErr dash_arg
104 (arg1:args1) -> fio arg1 >> return args1
108 [] -> unknownFlagErr dash_arg
109 (arg1:args1) -> fio arg1 >> return args1
113 then fio rest >> return args
114 else unknownFlagErr dash_arg
118 then fio rest >> return args
119 else unknownFlagErr dash_arg
121 OptPrefix fio -> fio rest >> return args
123 AnySuffix fio -> fio dash_arg >> return args
125 AnySuffixPred p fio -> fio dash_arg >> return args
129 then unknownFlagErr dash_arg
130 else fio dash_arg >> return args
132 findArg :: [(String,OptKind)] -> String -> Maybe (String,OptKind)
134 = case [ (remove_spaces rest, k)
136 Just rest <- [maybePrefixMatch pat arg],
142 arg_ok (NoArg _) rest arg = null rest
143 arg_ok (HasArg _) rest arg = True
144 arg_ok (SepArg _) rest arg = null rest
145 arg_ok (Prefix _) rest arg = notNull rest
146 arg_ok (PrefixPred p _) rest arg = notNull rest && p rest
147 arg_ok (OptPrefix _) rest arg = True
148 arg_ok (PassFlag _) rest arg = null rest
149 arg_ok (AnySuffix _) rest arg = True
150 arg_ok (AnySuffixPred p _) rest arg = p arg
152 -----------------------------------------------------------------------------
155 -- note that ordering is important in the following list: any flag which
156 -- is a prefix flag (i.e. HasArg, Prefix, OptPrefix, AnySuffix) will override
157 -- flags further down the list with the same prefix.
160 [ ------- help / version ----------------------------------------------
161 ( "?" , NoArg showGhcUsage)
162 , ( "-help" , NoArg showGhcUsage)
163 , ( "-print-libdir" , NoArg (do getTopDir >>= putStrLn
164 exitWith ExitSuccess))
165 , ( "V" , NoArg showVersion)
166 , ( "-version" , NoArg showVersion)
167 , ( "-numeric-version", NoArg (do putStrLn cProjectVersion
168 exitWith ExitSuccess))
170 ------- interfaces ----------------------------------------------------
171 , ( "-show-iface" , HasArg (\f -> do showIface f
172 exitWith ExitSuccess))
174 ------- verbosity ----------------------------------------------------
175 , ( "n" , NoArg setDryRun )
177 ------- primary modes ------------------------------------------------
178 , ( "M" , PassFlag (setMode DoMkDependHS))
179 , ( "E" , PassFlag (setMode (StopBefore anyHsc)))
180 , ( "C" , PassFlag (\f -> do setMode (StopBefore HCc) f
182 , ( "S" , PassFlag (setMode (StopBefore As)))
183 , ( "-make" , PassFlag (setMode DoMake))
184 , ( "-interactive" , PassFlag (setMode DoInteractive))
185 , ( "-mk-dll" , PassFlag (setMode DoMkDLL))
186 , ( "e" , HasArg (\s -> setMode (DoEval s) "-e"))
188 -- -fno-code says to stop after Hsc but don't generate any code.
189 , ( "fno-code" , PassFlag (\f -> do setMode (StopBefore HCc) f
191 setRecompFlag False))
193 ------- GHCi -------------------------------------------------------
194 , ( "ignore-dot-ghci", NoArg (writeIORef v_Read_DotGHCi False) )
195 , ( "read-dot-ghci" , NoArg (writeIORef v_Read_DotGHCi True) )
197 ------- ways --------------------------------------------------------
198 , ( "prof" , NoArg (addNoDups v_Ways WayProf) )
199 , ( "unreg" , NoArg (addNoDups v_Ways WayUnreg) )
200 , ( "ticky" , NoArg (addNoDups v_Ways WayTicky) )
201 , ( "parallel" , NoArg (addNoDups v_Ways WayPar) )
202 , ( "gransim" , NoArg (addNoDups v_Ways WayGran) )
203 , ( "smp" , NoArg (addNoDups v_Ways WaySMP) )
204 , ( "debug" , NoArg (addNoDups v_Ways WayDebug) )
205 , ( "ndp" , NoArg (addNoDups v_Ways WayNDP) )
206 , ( "threaded" , NoArg (addNoDups v_Ways WayThreaded) )
209 ------ RTS ways -----------------------------------------------------
211 ------ Debugging ----------------------------------------------------
212 , ( "dppr-noprags", PassFlag (add v_Opt_C) )
213 , ( "dppr-debug", PassFlag (add v_Opt_C) )
214 , ( "dppr-user-length", AnySuffix (add v_Opt_C) )
215 -- rest of the debugging flags are dynamic
217 --------- Profiling --------------------------------------------------
218 , ( "auto-dicts" , NoArg (add v_Opt_C "-fauto-sccs-on-dicts") )
219 , ( "auto-all" , NoArg (add v_Opt_C "-fauto-sccs-on-all-toplevs") )
220 , ( "auto" , NoArg (add v_Opt_C "-fauto-sccs-on-exported-toplevs") )
221 , ( "caf-all" , NoArg (add v_Opt_C "-fauto-sccs-on-individual-cafs") )
222 -- "ignore-sccs" doesn't work (ToDo)
224 , ( "no-auto-dicts" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-dicts") )
225 , ( "no-auto-all" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-all-toplevs") )
226 , ( "no-auto" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-exported-toplevs") )
227 , ( "no-caf-all" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-individual-cafs") )
229 ------- Miscellaneous -----------------------------------------------
230 , ( "no-link-chk" , NoArg (return ()) ) -- ignored for backwards compat
231 , ( "no-hs-main" , NoArg (writeIORef v_NoHsMain True) )
232 , ( "main-is" , SepArg setMainIs )
234 ------- Output Redirection ------------------------------------------
235 , ( "odir" , HasArg (writeIORef v_Output_dir . Just) )
236 , ( "o" , SepArg (writeIORef v_Output_file . Just) )
237 , ( "osuf" , HasArg (writeIORef v_Object_suf) )
238 , ( "hcsuf" , HasArg (writeIORef v_HC_suf ) )
239 , ( "hisuf" , HasArg (writeIORef v_Hi_suf ) )
240 , ( "hidir" , HasArg (writeIORef v_Hi_dir . Just) )
241 , ( "buildtag" , HasArg (writeIORef v_Build_tag) )
242 , ( "tmpdir" , HasArg setTmpDir)
243 , ( "ohi" , HasArg (writeIORef v_Output_hi . Just) )
246 , ( "keep-hc-file" , AnySuffix (\_ -> writeIORef v_Keep_hc_files True) )
247 , ( "keep-s-file" , AnySuffix (\_ -> writeIORef v_Keep_s_files True) )
248 , ( "keep-raw-s-file", AnySuffix (\_ -> writeIORef v_Keep_raw_s_files True) )
250 , ( "keep-il-file" , AnySuffix (\_ -> writeIORef v_Keep_il_files True) )
251 , ( "keep-ilx-file" , AnySuffix (\_ -> writeIORef v_Keep_ilx_files True) )
253 , ( "keep-tmp-files" , AnySuffix (\_ -> writeIORef v_Keep_tmp_files True) )
255 , ( "split-objs" , NoArg (if can_split
256 then do writeIORef v_Split_object_files True
257 add v_Opt_C "-fglobalise-toplev-names"
258 else hPutStrLn stderr
259 "warning: don't know how to split object files on this architecture"
262 ------- Include/Import Paths ----------------------------------------
263 , ( "I" , Prefix (addToDirList v_Include_paths) )
265 ------- Libraries ---------------------------------------------------
266 , ( "L" , Prefix (addToDirList v_Library_paths) )
267 , ( "l" , AnySuffix (\s -> add v_Opt_l s >> add v_Opt_dll s) )
269 #ifdef darwin_TARGET_OS
270 ------- Frameworks --------------------------------------------------
271 -- -framework-path should really be -F ...
272 , ( "framework-path" , HasArg (addToDirList v_Framework_paths) )
273 , ( "framework" , HasArg (add v_Cmdline_frameworks) )
275 ------- Specific phases --------------------------------------------
276 , ( "pgmL" , HasArg setPgmL )
277 , ( "pgmP" , HasArg setPgmP )
278 , ( "pgmF" , HasArg setPgmF )
279 , ( "pgmc" , HasArg setPgmc )
280 , ( "pgmm" , HasArg setPgmm )
281 , ( "pgms" , HasArg setPgms )
282 , ( "pgma" , HasArg setPgma )
283 , ( "pgml" , HasArg setPgml )
284 , ( "pgmdll" , HasArg setPgmDLL )
286 , ( "pgmI" , HasArg setPgmI )
287 , ( "pgmi" , HasArg setPgmi )
290 , ( "optdep" , HasArg (add v_Opt_dep) )
291 , ( "optl" , HasArg (add v_Opt_l) )
292 , ( "optdll" , HasArg (add v_Opt_dll) )
294 ----- Linker --------------------------------------------------------
295 , ( "c" , NoArg (writeIORef v_NoLink True) )
296 , ( "no-link" , NoArg (writeIORef v_NoLink True) ) -- Deprecated
297 , ( "static" , NoArg (writeIORef v_Static True) )
298 , ( "dynamic" , NoArg (writeIORef v_Static False) )
299 , ( "rdynamic" , NoArg (return ()) ) -- ignored for compat w/ gcc
301 ----- RTS opts ------------------------------------------------------
302 , ( "H" , HasArg (setHeapSize . fromIntegral . decodeSize) )
303 , ( "Rghc-timing" , NoArg (enableTimingStats) )
305 ------ Compiler flags -----------------------------------------------
306 , ( "fno-asm-mangling" , NoArg (writeIORef v_Do_asm_mangling False) )
308 , ( "fexcess-precision" , NoArg (do writeIORef v_Excess_precision True
309 add v_Opt_C "-fexcess-precision"))
311 -- All other "-fno-<blah>" options cancel out "-f<blah>" on the hsc cmdline
312 , ( "fno-", PrefixPred (\s -> isStaticHscFlag ("f"++s))
313 (\s -> add v_Anti_opt_C ("-f"++s)) )
315 -- Pass all remaining "-f<blah>" options to hsc
316 , ( "f", AnySuffixPred (isStaticHscFlag) (add v_Opt_C) )
321 ( "cpp", NoArg (updDynFlags (\s -> s{ cppFlag = True })) )
322 , ( "F", NoArg (updDynFlags (\s -> s{ ppFlag = True })) )
323 , ( "#include", HasArg (addCmdlineHCInclude) )
325 , ( "v", OptPrefix (setVerbosity) )
327 , ( "optL", HasArg (addOpt_L) )
328 , ( "optP", HasArg (addOpt_P) )
329 , ( "optF", HasArg (addOpt_F) )
330 , ( "optc", HasArg (addOpt_c) )
331 , ( "optm", HasArg (addOpt_m) )
332 , ( "opta", HasArg (addOpt_a) )
334 , ( "optI", HasArg (addOpt_I) )
335 , ( "opti", HasArg (addOpt_i) )
338 ------- recompilation checker --------------------------------------
339 , ( "recomp" , NoArg (setRecompFlag True) )
340 , ( "no-recomp" , NoArg (setRecompFlag False) )
342 ------- Packages ----------------------------------------------------
343 , ( "package-conf" , HasArg extraPkgConf_ )
344 , ( "no-user-package-conf", NoArg noUserPkgConf_ )
345 , ( "package-name" , HasArg ignorePackage ) -- for compatibility
346 , ( "package" , HasArg exposePackage )
347 , ( "hide-package" , HasArg hidePackage )
348 , ( "ignore-package" , HasArg ignorePackage )
349 , ( "syslib" , HasArg exposePackage ) -- for compatibility
351 ------ HsCpp opts ---------------------------------------------------
352 , ( "D", AnySuffix addOpt_P )
353 , ( "U", AnySuffix addOpt_P )
355 ------- Paths & stuff -----------------------------------------------
356 , ( "i" , OptPrefix addImportPath )
358 ------ Debugging ----------------------------------------------------
359 , ( "dstg-stats", NoArg (writeIORef v_StgStats True) )
361 , ( "ddump-cmm", setDumpFlag Opt_D_dump_cmm)
362 , ( "ddump-asm", setDumpFlag Opt_D_dump_asm)
363 , ( "ddump-cpranal", setDumpFlag Opt_D_dump_cpranal)
364 , ( "ddump-deriv", setDumpFlag Opt_D_dump_deriv)
365 , ( "ddump-ds", setDumpFlag Opt_D_dump_ds)
366 , ( "ddump-flatC", setDumpFlag Opt_D_dump_flatC)
367 , ( "ddump-foreign", setDumpFlag Opt_D_dump_foreign)
368 , ( "ddump-inlinings", setDumpFlag Opt_D_dump_inlinings)
369 , ( "ddump-occur-anal", setDumpFlag Opt_D_dump_occur_anal)
370 , ( "ddump-parsed", setDumpFlag Opt_D_dump_parsed)
371 , ( "ddump-rn", setDumpFlag Opt_D_dump_rn)
372 , ( "ddump-simpl", setDumpFlag Opt_D_dump_simpl)
373 , ( "ddump-simpl-iterations", setDumpFlag Opt_D_dump_simpl_iterations)
374 , ( "ddump-spec", setDumpFlag Opt_D_dump_spec)
375 , ( "ddump-prep", setDumpFlag Opt_D_dump_prep)
376 , ( "ddump-stg", setDumpFlag Opt_D_dump_stg)
377 , ( "ddump-stranal", setDumpFlag Opt_D_dump_stranal)
378 , ( "ddump-tc", setDumpFlag Opt_D_dump_tc)
379 , ( "ddump-types", setDumpFlag Opt_D_dump_types)
380 , ( "ddump-rules", setDumpFlag Opt_D_dump_rules)
381 , ( "ddump-cse", setDumpFlag Opt_D_dump_cse)
382 , ( "ddump-worker-wrapper", setDumpFlag Opt_D_dump_worker_wrapper)
383 , ( "ddump-rn-trace", setDumpFlag Opt_D_dump_rn_trace)
384 , ( "ddump-if-trace", setDumpFlag Opt_D_dump_if_trace)
385 , ( "ddump-tc-trace", setDumpFlag Opt_D_dump_tc_trace)
386 , ( "ddump-splices", setDumpFlag Opt_D_dump_splices)
387 , ( "ddump-rn-stats", setDumpFlag Opt_D_dump_rn_stats)
388 , ( "ddump-opt-cmm", setDumpFlag Opt_D_dump_opt_cmm)
389 , ( "ddump-simpl-stats", setDumpFlag Opt_D_dump_simpl_stats)
390 , ( "ddump-bcos", setDumpFlag Opt_D_dump_BCOs)
391 , ( "dsource-stats", setDumpFlag Opt_D_source_stats)
392 , ( "dverbose-core2core", setDumpFlag Opt_D_verbose_core2core)
393 , ( "dverbose-stg2stg", setDumpFlag Opt_D_verbose_stg2stg)
394 , ( "ddump-hi-diffs", setDumpFlag Opt_D_dump_hi_diffs)
395 , ( "ddump-hi", setDumpFlag Opt_D_dump_hi)
396 , ( "ddump-minimal-imports", setDumpFlag Opt_D_dump_minimal_imports)
397 , ( "ddump-vect", setDumpFlag Opt_D_dump_vect)
398 , ( "dcore-lint", setDumpFlag Opt_DoCoreLinting)
399 , ( "dstg-lint", setDumpFlag Opt_DoStgLinting)
400 , ( "dcmm-lint", setDumpFlag Opt_DoCmmLinting)
401 , ( "dshow-passes", NoArg (setRecompFlag False >> setVerbosity "2") )
403 ------ Machine dependant (-m<blah>) stuff ---------------------------
405 , ( "monly-2-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 2}) ))
406 , ( "monly-3-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 3}) ))
407 , ( "monly-4-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 4}) ))
409 ------ Warning opts -------------------------------------------------
410 , ( "W" , NoArg (mapM_ setDynFlag minusWOpts) )
411 , ( "Werror" , NoArg (setDynFlag Opt_WarnIsError) )
412 , ( "Wall" , NoArg (mapM_ setDynFlag minusWallOpts) )
413 , ( "Wnot" , NoArg (mapM_ unSetDynFlag minusWallOpts) ) /* DEPREC */
414 , ( "w" , NoArg (mapM_ unSetDynFlag minusWallOpts) )
416 ------ Optimisation flags ------------------------------------------
417 , ( "O" , NoArg (setOptLevel 1))
418 , ( "Onot" , NoArg (setOptLevel 0))
419 , ( "O" , PrefixPred (all isDigit) (setOptLevel . read))
421 , ( "fmax-simplifier-iterations",
422 PrefixPred (all isDigit)
423 (\n -> updDynFlags (\dfs ->
424 dfs{ maxSimplIterations = read n })) )
427 SepArg (\s -> updDynFlags (\dfs -> dfs{ ruleCheck = Just s })))
429 ------ Compiler flags -----------------------------------------------
431 , ( "fasm", AnySuffix (\_ -> setTarget HscAsm) )
432 , ( "fvia-c", NoArg (setTarget HscC) )
433 , ( "fvia-C", NoArg (setTarget HscC) )
434 , ( "filx", NoArg (setTarget HscILX) )
436 , ( "fglasgow-exts", NoArg (mapM_ setDynFlag glasgowExtsFlags) )
437 , ( "fno-glasgow-exts", NoArg (mapM_ unSetDynFlag glasgowExtsFlags) )
439 -- the rest of the -f* and -fno-* flags
440 , ( "fno-", PrefixPred (\f -> isFFlag f) (\f -> unSetDynFlag (getFFlag f)) )
441 , ( "f", PrefixPred (\f -> isFFlag f) (\f -> setDynFlag (getFFlag f)) )
444 -- these -f<blah> flags can all be reversed with -fno-<blah>
447 ( "warn-duplicate-exports", Opt_WarnDuplicateExports ),
448 ( "warn-hi-shadowing", Opt_WarnHiShadows ),
449 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns ),
450 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd ),
451 ( "warn-missing-fields", Opt_WarnMissingFields ),
452 ( "warn-missing-methods", Opt_WarnMissingMethods ),
453 ( "warn-missing-signatures", Opt_WarnMissingSigs ),
454 ( "warn-name-shadowing", Opt_WarnNameShadowing ),
455 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns ),
456 ( "warn-simple-patterns", Opt_WarnSimplePatterns ),
457 ( "warn-type-defaults", Opt_WarnTypeDefaults ),
458 ( "warn-unused-binds", Opt_WarnUnusedBinds ),
459 ( "warn-unused-imports", Opt_WarnUnusedImports ),
460 ( "warn-unused-matches", Opt_WarnUnusedMatches ),
461 ( "warn-deprecations", Opt_WarnDeprecations ),
462 ( "warn-orphans", Opt_WarnOrphans ),
463 ( "fi", Opt_FFI ), -- support `-ffi'...
464 ( "ffi", Opt_FFI ), -- ...and also `-fffi'
465 ( "arrows", Opt_Arrows ), -- arrow syntax
466 ( "parr", Opt_PArr ),
468 ( "implicit-prelude", Opt_ImplicitPrelude ),
469 ( "scoped-type-variables", Opt_ScopedTypeVariables ),
470 ( "monomorphism-restriction", Opt_MonomorphismRestriction ),
471 ( "implicit-params", Opt_ImplicitParams ),
472 ( "allow-overlapping-instances", Opt_AllowOverlappingInstances ),
473 ( "allow-undecidable-instances", Opt_AllowUndecidableInstances ),
474 ( "allow-incoherent-instances", Opt_AllowIncoherentInstances ),
475 ( "generics", Opt_Generics ),
476 ( "strictness", Opt_Strictness ),
477 ( "full-laziness", Opt_FullLaziness ),
479 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas ),
480 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas ),
481 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion ),
482 ( "ignore-asserts", Opt_IgnoreAsserts ),
483 ( "do-eta-reduction", Opt_DoEtaReduction ),
484 ( "case-merge", Opt_CaseMerge ),
485 ( "unbox-strict-fields", Opt_UnboxStrictFields )
488 glasgowExtsFlags = [ Opt_GlasgowExts, Opt_FFI, Opt_TH, Opt_ImplicitParams, Opt_ScopedTypeVariables ]
490 isFFlag f = f `elem` (map fst fFlags)
491 getFFlag f = fromJust (lookup f fFlags)
493 -- -----------------------------------------------------------------------------
494 -- Parsing the dynamic flags.
496 -- we use a temporary global variable, for convenience
498 GLOBAL_VAR(v_DynFlags, defaultDynFlags, DynFlags)
500 processDynamicFlags :: [String] -> DynFlags -> IO (DynFlags,[String])
501 processDynamicFlags args dflags = do
502 writeIORef v_DynFlags dflags
503 spare <- processArgs dynamic_flags args []
504 dflags <- readIORef v_DynFlags
505 return (dflags,spare)
507 updDynFlags :: (DynFlags -> DynFlags) -> IO ()
508 updDynFlags f = do dfs <- readIORef v_DynFlags
509 writeIORef v_DynFlags (f dfs)
511 setDynFlag, unSetDynFlag :: DynFlag -> IO ()
512 setDynFlag f = updDynFlags (\dfs -> dopt_set dfs f)
513 unSetDynFlag f = updDynFlags (\dfs -> dopt_unset dfs f)
515 setDumpFlag :: DynFlag -> OptKind
516 setDumpFlag dump_flag
517 = NoArg (setRecompFlag False >> setDynFlag dump_flag)
518 -- Whenver we -ddump, switch off the recompilation checker,
519 -- else you don't see the dump!
521 addOpt_L a = updDynFlags (\s -> s{opt_L = a : opt_L s})
522 addOpt_P a = updDynFlags (\s -> s{opt_P = a : opt_P s})
523 addOpt_F a = updDynFlags (\s -> s{opt_F = a : opt_F s})
524 addOpt_c a = updDynFlags (\s -> s{opt_c = a : opt_c s})
525 addOpt_a a = updDynFlags (\s -> s{opt_a = a : opt_a s})
526 addOpt_m a = updDynFlags (\s -> s{opt_m = a : opt_m s})
528 addOpt_I a = updDynFlags (\s -> s{opt_I = a : opt_I s})
529 addOpt_i a = updDynFlags (\s -> s{opt_i = a : opt_i s})
532 setRecompFlag :: Bool -> IO ()
533 setRecompFlag recomp = updDynFlags (\dfs -> dfs{ recompFlag = recomp })
535 setVerbosity "" = updDynFlags (\dfs -> dfs{ verbosity = 3 })
537 | all isDigit n = updDynFlags (\dfs -> dfs{ verbosity = read n })
538 | otherwise = throwDyn (UsageError "can't parse verbosity flag (-v<n>)")
540 addCmdlineHCInclude a = updDynFlags (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
542 extraPkgConf_ p = updDynFlags (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
543 noUserPkgConf_ = updDynFlags (\s -> s{ readUserPkgConf = False })
546 updDynFlags (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
548 updDynFlags (\s -> s{ packageFlags = HidePackage p : packageFlags s })
550 updDynFlags (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
552 -- -i on its own deletes the import paths
553 addImportPath "" = updDynFlags (\s -> s{importPaths = []})
555 paths <- splitPathList p
556 updDynFlags (\s -> s{importPaths = importPaths s ++ paths})
558 -- we can only switch between HscC, HscAsmm, and HscILX with dynamic flags
559 -- (-fvia-C, -fasm, -filx respectively).
560 setTarget l = updDynFlags (\dfs -> case hscTarget dfs of
561 HscC -> dfs{ hscTarget = l }
562 HscAsm -> dfs{ hscTarget = l }
563 HscILX -> dfs{ hscTarget = l }
566 setOptLevel :: Int -> IO ()
568 = do dflags <- readIORef v_DynFlags
569 if hscTarget dflags == HscInterpreted && n > 0
570 then putStr "warning: -O conflicts with --interactive; -O ignored.\n"
571 else writeIORef v_DynFlags (updOptLevel n dflags)
573 -----------------------------------------------------------------------------
574 -- convert sizes like "3.5M" into integers
576 decodeSize :: String -> Integer
578 | c == "" = truncate n
579 | c == "K" || c == "k" = truncate (n * 1000)
580 | c == "M" || c == "m" = truncate (n * 1000 * 1000)
581 | c == "G" || c == "g" = truncate (n * 1000 * 1000 * 1000)
582 | otherwise = throwDyn (CmdLineError ("can't decode size: " ++ str))
583 where (m, c) = span pred str
585 pred c = isDigit c || c == '.'
588 -----------------------------------------------------------------------------
591 #if __GLASGOW_HASKELL__ >= 504
592 foreign import ccall unsafe "setHeapSize" setHeapSize :: Int -> IO ()
593 foreign import ccall unsafe "enableTimingStats" enableTimingStats :: IO ()
595 foreign import "setHeapSize" unsafe setHeapSize :: Int -> IO ()
596 foreign import "enableTimingStats" unsafe enableTimingStats :: IO ()
599 -----------------------------------------------------------------------------
600 -- Build the Hsc static command line opts
602 buildStaticHscOpts :: IO [String]
603 buildStaticHscOpts = do
605 opt_C_ <- getStaticOpts v_Opt_C -- misc hsc opts from the command line
607 -- take into account -fno-* flags by removing the equivalent -f*
608 -- flag from our list.
609 anti_flags <- getStaticOpts v_Anti_opt_C
610 let basic_opts = opt_C_
611 filtered_opts = filter (`notElem` anti_flags) basic_opts
613 static <- (do s <- readIORef v_Static; if s then return "-static"
616 return ( static : filtered_opts )
618 setMainIs :: String -> IO ()
620 | not (null main_mod) -- The arg looked like "Foo.baz"
621 = do { writeIORef v_MainFunIs (Just main_fn) ;
622 writeIORef v_MainModIs (Just main_mod) }
624 | isUpper (head main_fn) -- The arg looked like "Foo"
625 = writeIORef v_MainModIs (Just main_fn)
627 | otherwise -- The arg looked like "baz"
628 = writeIORef v_MainFunIs (Just main_fn)
630 (main_mod, main_fn) = split_longest_prefix arg (== '.')
633 -----------------------------------------------------------------------------
634 -- Via-C compilation stuff
636 -- flags returned are: ( all C compilations
637 -- , registerised HC compilations
641 #if alpha_TARGET_ARCH
642 = return ( ["-w", "-mieee"
643 #ifdef HAVE_THREADED_RTS_SUPPORT
647 -- For now, to suppress the gcc warning "call-clobbered
648 -- register used for global register variable", we simply
649 -- disable all warnings altogether using the -w flag. Oh well.
651 #elif hppa_TARGET_ARCH
652 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
653 -- (very nice, but too bad the HP /usr/include files don't agree.)
654 = return ( ["-D_HPUX_SOURCE"], [] )
656 #elif m68k_TARGET_ARCH
657 -- -fno-defer-pop : for the .hc files, we want all the pushing/
658 -- popping of args to routines to be explicit; if we let things
659 -- be deferred 'til after an STGJUMP, imminent death is certain!
661 -- -fomit-frame-pointer : *don't*
662 -- It's better to have a6 completely tied up being a frame pointer
663 -- rather than let GCC pick random things to do with it.
664 -- (If we want to steal a6, then we would try to do things
665 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
666 = return ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
668 #elif i386_TARGET_ARCH
669 -- -fno-defer-pop : basically the same game as for m68k
671 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
672 -- the fp (%ebp) for our register maps.
673 = do let n_regs = stolen_x86_regs dflags
674 sta <- readIORef v_Static
675 return ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
676 -- , if suffixMatch "mingw32" cTARGETPLATFORM then "-mno-cygwin" else ""
679 #ifdef HAVE_GCC_MNO_OMIT_LFPTR
680 -- Some gccs are configured with
681 -- -momit-leaf-frame-pointer on by default, and it
682 -- apparently takes precedence over
683 -- -fomit-frame-pointer, so we disable it first here.
684 "-mno-omit-leaf-frame-pointer",
686 "-fomit-frame-pointer",
687 -- we want -fno-builtin, because when gcc inlines
688 -- built-in functions like memcpy() it tends to
689 -- run out of registers, requiring -monly-n-regs
691 "-DSTOLEN_X86_REGS="++show n_regs ]
694 #elif ia64_TARGET_ARCH
695 = return ( [], ["-fomit-frame-pointer", "-G0"] )
697 #elif x86_64_TARGET_ARCH
698 = return ( [], ["-fomit-frame-pointer"] )
700 #elif mips_TARGET_ARCH
701 = return ( ["-static"], [] )
703 #elif sparc_TARGET_ARCH
704 = return ( [], ["-w"] )
705 -- For now, to suppress the gcc warning "call-clobbered
706 -- register used for global register variable", we simply
707 -- disable all warnings altogether using the -w flag. Oh well.
709 #elif powerpc_apple_darwin_TARGET
711 -- Disable Apple's precompiling preprocessor. It's a great thing
712 -- for "normal" programs, but it doesn't support register variable
715 -- Turn off PIC code generation to save space and time.
717 -- Don't generate "common" symbols - these are unwanted
718 -- in dynamic libraries.
721 then return ( ["-no-cpp-precomp", "-fno-common"],
723 else return ( ["-no-cpp-precomp", "-mdynamic-no-pic"],
724 ["-mdynamic-no-pic"] )
726 #elif powerpc_TARGET_ARCH
728 = return ( ["-fPIC"], ["-fPIC"] )
733 -----------------------------------------------------------------------------
736 -- -----------------------------------------------------------------------------
737 -- Version and usage messages
741 putStrLn (cProjectName ++ ", version " ++ cProjectVersion)
745 (ghc_usage_path,ghci_usage_path) <- getUsageMsgPaths
746 mode <- readIORef v_GhcMode
748 | DoInteractive <- mode = ghci_usage_path
749 | otherwise = ghc_usage_path
750 usage <- readFile usage_path
755 dump ('$':'$':s) = hPutStr stderr progName >> dump s
756 dump (c:s) = hPutChar stderr c >> dump s