1 -----------------------------------------------------------------------------
5 -- (c) The University of Glasgow 2000-2003
7 -----------------------------------------------------------------------------
10 processArgs, OptKind(..), static_flags, dynamic_flags,
16 #include "HsVersions.h"
17 #include "../includes/config.h"
19 import MkIface ( showIface )
30 import DATA_IOREF ( readIORef, writeIORef )
32 import System ( exitWith, ExitCode(..) )
38 -----------------------------------------------------------------------------
41 -- Flag parsing is now done in stages:
43 -- * parse the initial list of flags and remove any flags understood
44 -- by the driver only. Determine whether we're in multi-compilation
45 -- or single-compilation mode (done in Main.main).
47 -- * gather the list of "static" hsc flags, and assign them to the global
48 -- static hsc flags variable.
50 -- * build the inital DynFlags from the remaining flags.
52 -- * complain if we've got any flags left over.
54 -- * for each source file: grab the OPTIONS, and build a new DynFlags
55 -- to pass to the compiler.
57 -----------------------------------------------------------------------------
58 -- Process command-line
61 = NoArg (IO ()) -- flag with no argument
62 | HasArg (String -> IO ()) -- flag has an argument (maybe prefix)
63 | SepArg (String -> IO ()) -- flag has a separate argument
64 | Prefix (String -> IO ()) -- flag is a prefix only
65 | OptPrefix (String -> IO ()) -- flag may be a prefix
66 | AnySuffix (String -> IO ()) -- flag is a prefix, pass whole arg to fn
67 | PassFlag (String -> IO ()) -- flag with no arg, pass flag to fn
68 | PrefixPred (String -> Bool) (String -> IO ())
69 | AnySuffixPred (String -> Bool) (String -> IO ())
71 processArgs :: [(String,OptKind)] -> [String] -> [String]
72 -> IO [String] -- returns spare args
73 processArgs _spec [] spare = return (reverse spare)
75 processArgs spec args@(('-':arg):args') spare = do
76 case findArg spec arg of
77 Just (rest,action) -> do args' <- processOneArg action rest args
78 processArgs spec args' spare
79 Nothing -> processArgs spec args' (('-':arg):spare)
81 processArgs spec (arg:args) spare =
82 processArgs spec args (arg:spare)
84 processOneArg :: OptKind -> String -> [String] -> IO [String]
85 processOneArg action rest (dash_arg@('-':arg):args) =
89 then io >> return args
90 else unknownFlagErr dash_arg
94 then fio rest >> return args
96 [] -> missingArgErr dash_arg
97 (arg1:args1) -> fio arg1 >> return args1
101 [] -> unknownFlagErr dash_arg
102 (arg1:args1) -> fio arg1 >> return args1
106 then fio rest >> return args
107 else unknownFlagErr dash_arg
111 then fio rest >> return args
112 else unknownFlagErr dash_arg
114 OptPrefix fio -> fio rest >> return args
116 AnySuffix fio -> fio dash_arg >> return args
118 AnySuffixPred p fio -> fio dash_arg >> return args
122 then unknownFlagErr dash_arg
123 else fio dash_arg >> return args
125 findArg :: [(String,OptKind)] -> String -> Maybe (String,OptKind)
127 = case [ (remove_spaces rest, k)
129 Just rest <- [maybePrefixMatch pat arg],
135 arg_ok (NoArg _) rest arg = null rest
136 arg_ok (HasArg _) rest arg = True
137 arg_ok (SepArg _) rest arg = null rest
138 arg_ok (Prefix _) rest arg = notNull rest
139 arg_ok (PrefixPred p _) rest arg = notNull rest && p rest
140 arg_ok (OptPrefix _) rest arg = True
141 arg_ok (PassFlag _) rest arg = null rest
142 arg_ok (AnySuffix _) rest arg = True
143 arg_ok (AnySuffixPred p _) rest arg = p arg
145 -----------------------------------------------------------------------------
148 -- note that ordering is important in the following list: any flag which
149 -- is a prefix flag (i.e. HasArg, Prefix, OptPrefix, AnySuffix) will override
150 -- flags further down the list with the same prefix.
153 [ ------- help / version ----------------------------------------------
154 ( "?" , NoArg showGhcUsage)
155 , ( "-help" , NoArg showGhcUsage)
156 , ( "-print-libdir" , NoArg (do getTopDir >>= putStrLn
157 exitWith ExitSuccess))
158 , ( "V" , NoArg showVersion)
159 , ( "-version" , NoArg showVersion)
160 , ( "-numeric-version", NoArg (do putStrLn cProjectVersion
161 exitWith ExitSuccess))
163 ------- interfaces ----------------------------------------------------
164 , ( "-show-iface" , HasArg (\f -> do showIface f
165 exitWith ExitSuccess))
167 ------- verbosity ----------------------------------------------------
168 , ( "n" , NoArg setDryRun )
170 ------- primary modes ------------------------------------------------
171 , ( "M" , PassFlag (setMode DoMkDependHS))
172 , ( "E" , PassFlag (setMode (StopBefore Hsc)))
173 , ( "C" , PassFlag (\f -> do setMode (StopBefore HCc) f
175 , ( "S" , PassFlag (setMode (StopBefore As)))
176 , ( "c" , PassFlag (setMode (StopBefore Ln)))
177 , ( "-make" , PassFlag (setMode DoMake))
178 , ( "-interactive" , PassFlag (setMode DoInteractive))
179 , ( "-mk-dll" , PassFlag (setMode DoMkDLL))
180 , ( "e" , HasArg (\s -> setMode (DoEval s) "-e"))
182 -- -fno-code says to stop after Hsc but don't generate any code.
183 , ( "fno-code" , PassFlag (\f -> do setMode (StopBefore HCc) f
185 writeIORef v_Recomp False))
187 ------- GHCi -------------------------------------------------------
188 , ( "ignore-dot-ghci", NoArg (writeIORef v_Read_DotGHCi False) )
189 , ( "read-dot-ghci" , NoArg (writeIORef v_Read_DotGHCi True) )
191 ------- recompilation checker --------------------------------------
192 , ( "recomp" , NoArg (writeIORef v_Recomp True) )
193 , ( "no-recomp" , NoArg (writeIORef v_Recomp False) )
195 ------- ways --------------------------------------------------------
196 , ( "prof" , NoArg (addNoDups v_Ways WayProf) )
197 , ( "unreg" , NoArg (addNoDups v_Ways WayUnreg) )
198 , ( "ticky" , NoArg (addNoDups v_Ways WayTicky) )
199 , ( "parallel" , NoArg (addNoDups v_Ways WayPar) )
200 , ( "gransim" , NoArg (addNoDups v_Ways WayGran) )
201 , ( "smp" , NoArg (addNoDups v_Ways WaySMP) )
202 , ( "debug" , NoArg (addNoDups v_Ways WayDebug) )
203 , ( "ndp" , NoArg (addNoDups v_Ways WayNDP) )
206 ------ Debugging ----------------------------------------------------
207 , ( "dppr-noprags", PassFlag (add v_Opt_C) )
208 , ( "dppr-debug", PassFlag (add v_Opt_C) )
209 , ( "dppr-user-length", AnySuffix (add v_Opt_C) )
210 -- rest of the debugging flags are dynamic
212 --------- Profiling --------------------------------------------------
213 , ( "auto-dicts" , NoArg (add v_Opt_C "-fauto-sccs-on-dicts") )
214 , ( "auto-all" , NoArg (add v_Opt_C "-fauto-sccs-on-all-toplevs") )
215 , ( "auto" , NoArg (add v_Opt_C "-fauto-sccs-on-exported-toplevs") )
216 , ( "caf-all" , NoArg (add v_Opt_C "-fauto-sccs-on-individual-cafs") )
217 -- "ignore-sccs" doesn't work (ToDo)
219 , ( "no-auto-dicts" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-dicts") )
220 , ( "no-auto-all" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-all-toplevs") )
221 , ( "no-auto" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-exported-toplevs") )
222 , ( "no-caf-all" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-individual-cafs") )
224 ------- Miscellaneous -----------------------------------------------
225 , ( "no-link-chk" , NoArg (return ()) ) -- ignored for backwards compat
226 , ( "no-hs-main" , NoArg (writeIORef v_NoHsMain True) )
227 , ( "main-is" , SepArg setMainIs )
229 ------- Output Redirection ------------------------------------------
230 , ( "odir" , HasArg (writeIORef v_Output_dir . Just) )
231 , ( "o" , SepArg (writeIORef v_Output_file . Just) )
232 , ( "osuf" , HasArg (writeIORef v_Object_suf) )
233 , ( "hcsuf" , HasArg (writeIORef v_HC_suf . Just) )
234 , ( "hisuf" , HasArg (writeIORef v_Hi_suf) )
235 , ( "hidir" , HasArg (writeIORef v_Hi_dir . Just) )
236 , ( "buildtag" , HasArg (writeIORef v_Build_tag) )
237 , ( "tmpdir" , HasArg setTmpDir)
238 , ( "ohi" , HasArg (writeIORef v_Output_hi . Just) )
241 , ( "keep-hc-file" , AnySuffix (\_ -> writeIORef v_Keep_hc_files True) )
242 , ( "keep-s-file" , AnySuffix (\_ -> writeIORef v_Keep_s_files True) )
243 , ( "keep-raw-s-file", AnySuffix (\_ -> writeIORef v_Keep_raw_s_files True) )
245 , ( "keep-il-file" , AnySuffix (\_ -> writeIORef v_Keep_il_files True) )
246 , ( "keep-ilx-file" , AnySuffix (\_ -> writeIORef v_Keep_ilx_files True) )
248 , ( "keep-tmp-files" , AnySuffix (\_ -> writeIORef v_Keep_tmp_files True) )
250 , ( "split-objs" , NoArg (if can_split
251 then do writeIORef v_Split_object_files True
252 add v_Opt_C "-fglobalise-toplev-names"
253 else hPutStrLn stderr
254 "warning: don't know how to split \
255 \object files on this architecture"
258 ------- Include/Import Paths ----------------------------------------
259 , ( "i" , OptPrefix (addToDirList v_Import_paths) )
260 , ( "I" , Prefix (addToDirList v_Include_paths) )
262 ------- Libraries ---------------------------------------------------
263 , ( "L" , Prefix (addToDirList v_Library_paths) )
264 , ( "l" , AnySuffix (\s -> add v_Opt_l s >> add v_Opt_dll s) )
266 #ifdef darwin_TARGET_OS
267 ------- Frameworks --------------------------------------------------
268 -- -framework-path should really be -F ...
269 , ( "framework-path" , HasArg (addToDirList v_Framework_paths) )
270 , ( "framework" , HasArg (add v_Cmdline_frameworks) )
272 ------- Packages ----------------------------------------------------
273 , ( "package-name" , HasArg (\s -> add v_Opt_C ("-inpackage="++s)) )
275 , ( "package-conf" , HasArg (readPackageConf) )
276 , ( "package" , HasArg (addPackage) )
277 , ( "syslib" , HasArg (addPackage) ) -- for compatibility w/ old vsns
279 ------- Specific phases --------------------------------------------
280 , ( "pgmL" , HasArg setPgmL )
281 , ( "pgmP" , HasArg setPgmP )
282 , ( "pgmF" , HasArg setPgmF )
283 , ( "pgmc" , HasArg setPgmc )
284 , ( "pgmm" , HasArg setPgmm )
285 , ( "pgms" , HasArg setPgms )
286 , ( "pgma" , HasArg setPgma )
287 , ( "pgml" , HasArg setPgml )
288 , ( "pgmdll" , HasArg setPgmDLL )
290 , ( "pgmI" , HasArg setPgmI )
291 , ( "pgmi" , HasArg setPgmi )
294 , ( "optdep" , HasArg (add v_Opt_dep) )
295 , ( "optl" , HasArg (add v_Opt_l) )
296 , ( "optdll" , HasArg (add v_Opt_dll) )
298 ----- Linker --------------------------------------------------------
299 , ( "no-link" , NoArg (writeIORef v_NoLink True) )
300 , ( "static" , NoArg (writeIORef v_Static True) )
301 , ( "dynamic" , NoArg (writeIORef v_Static False) )
302 , ( "rdynamic" , NoArg (return ()) ) -- ignored for compat w/ gcc
304 ----- RTS opts ------------------------------------------------------
305 , ( "H" , HasArg (setHeapSize . fromIntegral . decodeSize) )
306 , ( "Rghc-timing" , NoArg (enableTimingStats) )
308 ------ Compiler flags -----------------------------------------------
309 , ( "fno-asm-mangling" , NoArg (writeIORef v_Do_asm_mangling False) )
311 , ( "fexcess-precision" , NoArg (do writeIORef v_Excess_precision True
312 add v_Opt_C "-fexcess-precision"))
314 -- All other "-fno-<blah>" options cancel out "-f<blah>" on the hsc cmdline
315 , ( "fno-", PrefixPred (\s -> isStaticHscFlag ("f"++s))
316 (\s -> add v_Anti_opt_C ("-f"++s)) )
318 -- Pass all remaining "-f<blah>" options to hsc
319 , ( "f", AnySuffixPred (isStaticHscFlag) (add v_Opt_C) )
324 ( "cpp", NoArg (updDynFlags (\s -> s{ cppFlag = True })) )
325 , ( "F", NoArg (updDynFlags (\s -> s{ ppFlag = True })) )
326 , ( "#include", HasArg (addCmdlineHCInclude) )
328 , ( "v", OptPrefix (setVerbosity) )
330 , ( "optL", HasArg (addOpt_L) )
331 , ( "optP", HasArg (addOpt_P) )
332 , ( "optF", HasArg (addOpt_F) )
333 , ( "optc", HasArg (addOpt_c) )
334 , ( "optm", HasArg (addOpt_m) )
335 , ( "opta", HasArg (addOpt_a) )
337 , ( "optI", HasArg (addOpt_I) )
338 , ( "opti", HasArg (addOpt_i) )
341 ------ HsCpp opts ---------------------------------------------------
342 , ( "D", AnySuffix addOpt_P )
343 , ( "U", AnySuffix addOpt_P )
345 ------ Debugging ----------------------------------------------------
346 , ( "dstg-stats", NoArg (writeIORef v_StgStats True) )
348 , ( "ddump-absC", NoArg (setDynFlag Opt_D_dump_absC) )
349 , ( "ddump-asm", NoArg (setDynFlag Opt_D_dump_asm) )
350 , ( "ddump-cpranal", NoArg (setDynFlag Opt_D_dump_cpranal) )
351 , ( "ddump-deriv", NoArg (setDynFlag Opt_D_dump_deriv) )
352 , ( "ddump-ds", NoArg (setDynFlag Opt_D_dump_ds) )
353 , ( "ddump-flatC", NoArg (setDynFlag Opt_D_dump_flatC) )
354 , ( "ddump-foreign", NoArg (setDynFlag Opt_D_dump_foreign) )
355 , ( "ddump-inlinings", NoArg (setDynFlag Opt_D_dump_inlinings) )
356 , ( "ddump-occur-anal", NoArg (setDynFlag Opt_D_dump_occur_anal) )
357 , ( "ddump-parsed", NoArg (setDynFlag Opt_D_dump_parsed) )
358 , ( "ddump-realC", NoArg (setDynFlag Opt_D_dump_realC) )
359 , ( "ddump-rn", NoArg (setDynFlag Opt_D_dump_rn) )
360 , ( "ddump-simpl", NoArg (setDynFlag Opt_D_dump_simpl) )
361 , ( "ddump-simpl-iterations", NoArg (setDynFlag Opt_D_dump_simpl_iterations) )
362 , ( "ddump-spec", NoArg (setDynFlag Opt_D_dump_spec) )
363 , ( "ddump-prep", NoArg (setDynFlag Opt_D_dump_prep) )
364 , ( "ddump-stg", NoArg (setDynFlag Opt_D_dump_stg) )
365 , ( "ddump-stranal", NoArg (setDynFlag Opt_D_dump_stranal) )
366 , ( "ddump-tc", NoArg (setDynFlag Opt_D_dump_tc) )
367 , ( "ddump-types", NoArg (setDynFlag Opt_D_dump_types) )
368 , ( "ddump-rules", NoArg (setDynFlag Opt_D_dump_rules) )
369 , ( "ddump-cse", NoArg (setDynFlag Opt_D_dump_cse) )
370 , ( "ddump-worker-wrapper", NoArg (setDynFlag Opt_D_dump_worker_wrapper) )
371 , ( "dshow-passes", NoArg (setVerbosity "2") )
372 , ( "ddump-rn-trace", NoArg (setDynFlag Opt_D_dump_rn_trace) )
373 , ( "ddump-if-trace", NoArg (setDynFlag Opt_D_dump_if_trace) )
374 , ( "ddump-tc-trace", NoArg (setDynFlag Opt_D_dump_tc_trace) )
375 , ( "ddump-splices", NoArg (setDynFlag Opt_D_dump_splices) )
376 , ( "ddump-rn-stats", NoArg (setDynFlag Opt_D_dump_rn_stats) )
377 , ( "ddump-stix", NoArg (setDynFlag Opt_D_dump_stix) )
378 , ( "ddump-simpl-stats", NoArg (setDynFlag Opt_D_dump_simpl_stats) )
379 , ( "ddump-bcos", NoArg (setDynFlag Opt_D_dump_BCOs) )
380 , ( "dsource-stats", NoArg (setDynFlag Opt_D_source_stats) )
381 , ( "dverbose-core2core", NoArg (setDynFlag Opt_D_verbose_core2core) )
382 , ( "dverbose-stg2stg", NoArg (setDynFlag Opt_D_verbose_stg2stg) )
383 , ( "ddump-hi-diffs", NoArg (setDynFlag Opt_D_dump_hi_diffs) )
384 , ( "ddump-hi", NoArg (setDynFlag Opt_D_dump_hi) )
385 , ( "ddump-minimal-imports", NoArg (setDynFlag Opt_D_dump_minimal_imports) )
386 , ( "ddump-vect", NoArg (setDynFlag Opt_D_dump_vect) )
387 , ( "dcore-lint", NoArg (setDynFlag Opt_DoCoreLinting) )
388 , ( "dstg-lint", NoArg (setDynFlag Opt_DoStgLinting) )
390 ------ Machine dependant (-m<blah>) stuff ---------------------------
392 , ( "monly-2-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 2}) ))
393 , ( "monly-3-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 3}) ))
394 , ( "monly-4-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 4}) ))
396 ------ Warning opts -------------------------------------------------
397 , ( "W" , NoArg (mapM_ setDynFlag minusWOpts) )
398 , ( "Werror" , NoArg (setDynFlag Opt_WarnIsError) )
399 , ( "Wall" , NoArg (mapM_ setDynFlag minusWallOpts) )
400 , ( "Wnot" , NoArg (mapM_ unSetDynFlag minusWallOpts) ) /* DEPREC */
401 , ( "w" , NoArg (mapM_ unSetDynFlag minusWallOpts) )
403 ------ Optimisation flags ------------------------------------------
404 , ( "O" , NoArg (setOptLevel 1))
405 , ( "Onot" , NoArg (setOptLevel 0))
406 , ( "O" , PrefixPred (all isDigit) (setOptLevel . read))
408 , ( "fmax-simplifier-iterations",
409 PrefixPred (all isDigit)
410 (\n -> updDynFlags (\dfs ->
411 dfs{ maxSimplIterations = read n })) )
414 SepArg (\s -> updDynFlags (\dfs -> dfs{ ruleCheck = Just s })))
416 ------ Compiler flags -----------------------------------------------
418 , ( "fasm", AnySuffix (\_ -> setLang HscAsm) )
419 , ( "fvia-c", NoArg (setLang HscC) )
420 , ( "fvia-C", NoArg (setLang HscC) )
421 , ( "filx", NoArg (setLang HscILX) )
423 , ( "fglasgow-exts", NoArg (mapM_ setDynFlag glasgowExtsFlags) )
424 , ( "fno-glasgow-exts", NoArg (mapM_ unSetDynFlag glasgowExtsFlags) )
426 -- "active negatives"
427 , ( "fno-implicit-prelude", NoArg (setDynFlag Opt_NoImplicitPrelude) )
428 , ( "fno-monomorphism-restriction",
429 NoArg (setDynFlag Opt_NoMonomorphismRestriction) )
431 -- the rest of the -f* and -fno-* flags
432 , ( "fno-", PrefixPred (\f -> isFFlag f) (\f -> unSetDynFlag (getFFlag f)) )
433 , ( "f", PrefixPred (\f -> isFFlag f) (\f -> setDynFlag (getFFlag f)) )
436 -- these -f<blah> flags can all be reversed with -fno-<blah>
439 ( "warn-duplicate-exports", Opt_WarnDuplicateExports ),
440 ( "warn-hi-shadowing", Opt_WarnHiShadows ),
441 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns ),
442 ( "warn-missing-fields", Opt_WarnMissingFields ),
443 ( "warn-missing-methods", Opt_WarnMissingMethods ),
444 ( "warn-missing-signatures", Opt_WarnMissingSigs ),
445 ( "warn-name-shadowing", Opt_WarnNameShadowing ),
446 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns ),
447 ( "warn-simple-patterns", Opt_WarnSimplePatterns ),
448 ( "warn-type-defaults", Opt_WarnTypeDefaults ),
449 ( "warn-unused-binds", Opt_WarnUnusedBinds ),
450 ( "warn-unused-imports", Opt_WarnUnusedImports ),
451 ( "warn-unused-matches", Opt_WarnUnusedMatches ),
452 ( "warn-deprecations", Opt_WarnDeprecations ),
453 ( "fi", Opt_FFI ), -- support `-ffi'...
454 ( "ffi", Opt_FFI ), -- ...and also `-fffi'
455 ( "arrows", Opt_Arrows ), -- arrow syntax
456 ( "parr", Opt_PArr ),
458 ( "implicit-params", Opt_ImplicitParams ),
459 ( "allow-overlapping-instances", Opt_AllowOverlappingInstances ),
460 ( "allow-undecidable-instances", Opt_AllowUndecidableInstances ),
461 ( "allow-incoherent-instances", Opt_AllowIncoherentInstances ),
462 ( "generics", Opt_Generics ),
463 ( "strictness", Opt_Strictness ),
465 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas ),
466 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas ),
467 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion ),
468 ( "ignore-asserts", Opt_IgnoreAsserts ),
469 ( "do-eta-reduction", Opt_DoEtaReduction ),
470 ( "case-merge", Opt_CaseMerge ),
471 ( "unbox-strict-fields", Opt_UnboxStrictFields )
474 glasgowExtsFlags = [ Opt_GlasgowExts, Opt_FFI, Opt_TH, Opt_ImplicitParams ]
476 isFFlag f = f `elem` (map fst fFlags)
477 getFFlag f = fromJust (lookup f fFlags)
479 -----------------------------------------------------------------------------
480 -- convert sizes like "3.5M" into integers
482 decodeSize :: String -> Integer
484 | c == "" = truncate n
485 | c == "K" || c == "k" = truncate (n * 1000)
486 | c == "M" || c == "m" = truncate (n * 1000 * 1000)
487 | c == "G" || c == "g" = truncate (n * 1000 * 1000 * 1000)
488 | otherwise = throwDyn (CmdLineError ("can't decode size: " ++ str))
489 where (m, c) = span pred str
491 pred c = isDigit c || c == '.'
494 -----------------------------------------------------------------------------
497 #if __GLASGOW_HASKELL__ >= 504
498 foreign import ccall unsafe "setHeapSize" setHeapSize :: Int -> IO ()
499 foreign import ccall unsafe "enableTimingStats" enableTimingStats :: IO ()
501 foreign import "setHeapSize" unsafe setHeapSize :: Int -> IO ()
502 foreign import "enableTimingStats" unsafe enableTimingStats :: IO ()
505 -----------------------------------------------------------------------------
506 -- Build the Hsc static command line opts
508 buildStaticHscOpts :: IO [String]
509 buildStaticHscOpts = do
511 opt_C_ <- getStaticOpts v_Opt_C -- misc hsc opts from the command line
513 -- take into account -fno-* flags by removing the equivalent -f*
514 -- flag from our list.
515 anti_flags <- getStaticOpts v_Anti_opt_C
516 let basic_opts = opt_C_
517 filtered_opts = filter (`notElem` anti_flags) basic_opts
519 static <- (do s <- readIORef v_Static; if s then return "-static"
522 return ( static : filtered_opts )
524 setMainIs :: String -> IO ()
526 | not (null main_mod) -- The arg looked like "Foo.baz"
527 = do { writeIORef v_MainFunIs (Just main_fn) ;
528 writeIORef v_MainModIs (Just main_mod) }
530 | isUpper (head main_fn) -- The arg looked like "Foo"
531 = writeIORef v_MainModIs (Just main_fn)
533 | otherwise -- The arg looked like "baz"
534 = writeIORef v_MainFunIs (Just main_fn)
536 (main_mod, main_fn) = split_longest_prefix arg (== '.')
539 -----------------------------------------------------------------------------
540 -- Via-C compilation stuff
542 -- flags returned are: ( all C compilations
543 -- , registerised HC compilations
547 | prefixMatch "alpha" cTARGETPLATFORM
548 = return ( ["-static", "-w", "-mieee"
549 #ifdef HAVE_THREADED_RTS_SUPPORT
553 -- For now, to suppress the gcc warning "call-clobbered
554 -- register used for global register variable", we simply
555 -- disable all warnings altogether using the -w flag. Oh well.
557 | prefixMatch "hppa" cTARGETPLATFORM
558 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
559 -- (very nice, but too bad the HP /usr/include files don't agree.)
560 = return ( ["-static", "-D_HPUX_SOURCE"], [] )
562 | prefixMatch "m68k" cTARGETPLATFORM
563 -- -fno-defer-pop : for the .hc files, we want all the pushing/
564 -- popping of args to routines to be explicit; if we let things
565 -- be deferred 'til after an STGJUMP, imminent death is certain!
567 -- -fomit-frame-pointer : *don't*
568 -- It's better to have a6 completely tied up being a frame pointer
569 -- rather than let GCC pick random things to do with it.
570 -- (If we want to steal a6, then we would try to do things
571 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
572 = return ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
574 | prefixMatch "i386" cTARGETPLATFORM
575 -- -fno-defer-pop : basically the same game as for m68k
577 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
578 -- the fp (%ebp) for our register maps.
579 = do n_regs <- dynFlag stolen_x86_regs
580 sta <- readIORef v_Static
581 return ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
582 -- , if suffixMatch "mingw32" cTARGETPLATFORM then "-mno-cygwin" else ""
585 #ifdef HAVE_GCC_MNO_OMIT_LFPTR
586 -- Some gccs are configured with
587 -- -momit-leaf-frame-pointer on by default, and it
588 -- apparently takes precedence over
589 -- -fomit-frame-pointer, so we disable it first here.
590 "-mno-omit-leaf-frame-pointer",
592 "-fomit-frame-pointer",
593 -- we want -fno-builtin, because when gcc inlines
594 -- built-in functions like memcpy() it tends to
595 -- run out of registers, requiring -monly-n-regs
597 "-DSTOLEN_X86_REGS="++show n_regs ]
600 | prefixMatch "ia64" cTARGETPLATFORM
601 = return ( [], ["-fomit-frame-pointer", "-G0"] )
603 | prefixMatch "x86_64" cTARGETPLATFORM
604 = return ( [], ["-fomit-frame-pointer"] )
606 | prefixMatch "mips" cTARGETPLATFORM
607 = return ( ["-static"], [] )
609 | prefixMatch "sparc" cTARGETPLATFORM
610 = return ( [], ["-w"] )
611 -- For now, to suppress the gcc warning "call-clobbered
612 -- register used for global register variable", we simply
613 -- disable all warnings altogether using the -w flag. Oh well.
615 | prefixMatch "powerpc-apple-darwin" cTARGETPLATFORM
617 -- Disable Apple's precompiling preprocessor. It's a great thing
618 -- for "normal" programs, but it doesn't support register variable
621 -- As we don't support haskell code in shared libraries anyway,
622 -- we might as well turn of PIC code generation and save space and time.
623 -- This is completely optional.
624 = return ( ["-no-cpp-precomp","-mdynamic-no-pic"], [] )
626 | prefixMatch "powerpc" cTARGETPLATFORM || prefixMatch "rs6000" cTARGETPLATFORM
627 = return ( ["-static"], ["-finhibit-size-directive"] )
632 -----------------------------------------------------------------------------
635 addOpt_L a = updDynFlags (\s -> s{opt_L = a : opt_L s})
636 addOpt_P a = updDynFlags (\s -> s{opt_P = a : opt_P s})
637 addOpt_F a = updDynFlags (\s -> s{opt_F = a : opt_F s})
638 addOpt_c a = updDynFlags (\s -> s{opt_c = a : opt_c s})
639 addOpt_a a = updDynFlags (\s -> s{opt_a = a : opt_a s})
640 addOpt_m a = updDynFlags (\s -> s{opt_m = a : opt_m s})
642 addOpt_I a = updDynFlags (\s -> s{opt_I = a : opt_I s})
643 addOpt_i a = updDynFlags (\s -> s{opt_i = a : opt_i s})
646 setVerbosity "" = updDynFlags (\dfs -> dfs{ verbosity = 3 })
648 | all isDigit n = updDynFlags (\dfs -> dfs{ verbosity = read n })
649 | otherwise = throwDyn (UsageError "can't parse verbosity flag (-v<n>)")
651 addCmdlineHCInclude a = updDynFlags (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
653 -- -----------------------------------------------------------------------------
654 -- Version and usage messages
658 putStrLn (cProjectName ++ ", version " ++ cProjectVersion)
662 (ghc_usage_path,ghci_usage_path) <- getUsageMsgPaths
663 mode <- readIORef v_GhcMode
665 | mode == DoInteractive = ghci_usage_path
666 | otherwise = ghc_usage_path
667 usage <- readFile usage_path
672 dump ('$':'$':s) = hPutStr stderr progName >> dump s
673 dump (c:s) = hPutChar stderr c >> dump s