1 {-# OPTIONS -#include "hschooks.h" #-}
3 -----------------------------------------------------------------------------
4 -- $Id: DriverFlags.hs,v 1.40 2001/01/19 15:26:37 simonmar Exp $
8 -- (c) Simon Marlow 2000
10 -----------------------------------------------------------------------------
12 module DriverFlags where
14 #include "HsVersions.h"
16 import PackageMaintenance
19 import TmpFiles ( v_TmpDir )
34 -----------------------------------------------------------------------------
37 -- Flag parsing is now done in stages:
39 -- * parse the initial list of flags and remove any flags understood
40 -- by the driver only. Determine whether we're in multi-compilation
41 -- or single-compilation mode.
43 -- * gather the list of "static" hsc flags, and assign them to the global
44 -- static hsc flags variable.
46 -- * build the inital DynFlags from the remaining flags.
48 -- * complain if we've got any flags left over.
50 -- * for each source file: grab the OPTIONS, and build a new DynFlags
51 -- to pass to the compiler.
53 -----------------------------------------------------------------------------
54 -- Process command-line
57 = NoArg (IO ()) -- flag with no argument
58 | HasArg (String -> IO ()) -- flag has an argument (maybe prefix)
59 | SepArg (String -> IO ()) -- flag has a separate argument
60 | Prefix (String -> IO ()) -- flag is a prefix only
61 | OptPrefix (String -> IO ()) -- flag may be a prefix
62 | AnySuffix (String -> IO ()) -- flag is a prefix, pass whole arg to fn
63 | PassFlag (String -> IO ()) -- flag with no arg, pass flag to fn
64 | PrefixPred (String -> Bool) (String -> IO ())
65 | AnySuffixPred (String -> Bool) (String -> IO ())
67 processArgs :: [(String,OptKind)] -> [String] -> [String]
68 -> IO [String] -- returns spare args
69 processArgs _spec [] spare = return (reverse spare)
70 processArgs spec args@(('-':arg):args') spare = do
71 case findArg spec arg of
73 do args' <- processOneArg action rest args
74 processArgs spec args' spare
76 processArgs spec args' (('-':arg):spare)
77 processArgs spec (arg:args) spare =
78 processArgs spec args (arg:spare)
80 processOneArg :: OptKind -> String -> [String] -> IO [String]
81 processOneArg action rest (dash_arg@('-':arg):args) =
85 then io >> return args
86 else unknownFlagErr dash_arg
90 then fio rest >> return args
92 [] -> unknownFlagErr dash_arg
93 (arg1:args1) -> fio arg1 >> return args1
97 [] -> unknownFlagErr dash_arg
98 (arg1:args1) -> fio arg1 >> return args1
102 then fio rest >> return args
103 else unknownFlagErr dash_arg
107 then fio rest >> return args
108 else unknownFlagErr dash_arg
110 OptPrefix fio -> fio rest >> return args
112 AnySuffix fio -> fio dash_arg >> return args
114 AnySuffixPred p fio -> fio dash_arg >> return args
118 then unknownFlagErr dash_arg
119 else fio dash_arg >> return args
121 findArg :: [(String,OptKind)] -> String -> Maybe (String,OptKind)
123 = case [ (remove_spaces rest, k)
124 | (pat,k) <- spec, Just rest <- [my_prefix_match pat arg],
130 arg_ok (NoArg _) rest arg = null rest
131 arg_ok (HasArg _) rest arg = True
132 arg_ok (SepArg _) rest arg = null rest
133 arg_ok (Prefix _) rest arg = not (null rest)
134 arg_ok (PrefixPred p _) rest arg = not (null rest) && p rest
135 arg_ok (OptPrefix _) rest arg = True
136 arg_ok (PassFlag _) rest arg = null rest
137 arg_ok (AnySuffix _) rest arg = True
138 arg_ok (AnySuffixPred p _) rest arg = p arg
140 -----------------------------------------------------------------------------
143 -- note that ordering is important in the following list: any flag which
144 -- is a prefix flag (i.e. HasArg, Prefix, OptPrefix, AnySuffix) will override
145 -- flags further down the list with the same prefix.
148 [ ------- help -------------------------------------------------------
149 ( "?" , NoArg long_usage)
150 , ( "-help" , NoArg long_usage)
153 ------- version ----------------------------------------------------
154 , ( "-version" , NoArg (do hPutStrLn stdout (cProjectName
155 ++ ", version " ++ cProjectVersion)
156 exitWith ExitSuccess))
157 , ( "-numeric-version", NoArg (do hPutStrLn stdout cProjectVersion
158 exitWith ExitSuccess))
160 ------- verbosity ----------------------------------------------------
161 , ( "n" , NoArg (writeIORef v_Dry_run True) )
163 ------- recompilation checker --------------------------------------
164 , ( "recomp" , NoArg (writeIORef v_Recomp True) )
165 , ( "no-recomp" , NoArg (writeIORef v_Recomp False) )
167 ------- ways --------------------------------------------------------
168 , ( "prof" , NoArg (addNoDups v_Ways WayProf) )
169 , ( "unreg" , NoArg (addNoDups v_Ways WayUnreg) )
170 , ( "ticky" , NoArg (addNoDups v_Ways WayTicky) )
171 , ( "parallel" , NoArg (addNoDups v_Ways WayPar) )
172 , ( "gransim" , NoArg (addNoDups v_Ways WayGran) )
173 , ( "smp" , NoArg (addNoDups v_Ways WaySMP) )
174 , ( "debug" , NoArg (addNoDups v_Ways WayDebug) )
177 ------ Debugging ----------------------------------------------------
178 , ( "dppr-noprags", PassFlag (add v_Opt_C) )
179 , ( "dppr-debug", PassFlag (add v_Opt_C) )
180 , ( "dppr-user-length", AnySuffix (add v_Opt_C) )
181 -- rest of the debugging flags are dynamic
183 ------- Interface files ---------------------------------------------
184 , ( "hi" , NoArg (writeIORef v_ProduceHi True) )
185 , ( "nohi" , NoArg (writeIORef v_ProduceHi False) )
187 --------- Profiling --------------------------------------------------
188 , ( "auto-dicts" , NoArg (add v_Opt_C "-fauto-sccs-on-dicts") )
189 , ( "auto-all" , NoArg (add v_Opt_C "-fauto-sccs-on-all-toplevs") )
190 , ( "auto" , NoArg (add v_Opt_C "-fauto-sccs-on-exported-toplevs") )
191 , ( "caf-all" , NoArg (add v_Opt_C "-fauto-sccs-on-individual-cafs") )
192 -- "ignore-sccs" doesn't work (ToDo)
194 , ( "no-auto-dicts" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-dicts") )
195 , ( "no-auto-all" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-all-toplevs") )
196 , ( "no-auto" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-exported-toplevs") )
197 , ( "no-caf-all" , NoArg (add v_Anti_opt_C "-fauto-sccs-on-individual-cafs") )
199 ------- Miscellaneous -----------------------------------------------
200 , ( "no-link-chk" , NoArg (return ()) ) -- ignored for backwards compat
201 , ( "no-hs-main" , NoArg (writeIORef v_NoHsMain True) )
203 ------- Output Redirection ------------------------------------------
204 , ( "odir" , HasArg (writeIORef v_Output_dir . Just) )
205 , ( "o" , SepArg (writeIORef v_Output_file . Just) )
206 , ( "osuf" , HasArg (writeIORef v_Object_suf . Just) )
207 , ( "hisuf" , HasArg (writeIORef v_Hi_suf) )
208 , ( "tmpdir" , HasArg (writeIORef v_TmpDir . (++ "/")) )
209 , ( "ohi" , HasArg (\s -> case s of
210 "-" -> writeIORef v_Hi_on_stdout True
211 _ -> writeIORef v_Output_hi (Just s)) )
214 , ( "keep-hc-file" , AnySuffix (\_ -> writeIORef v_Keep_hc_files True) )
215 , ( "keep-s-file" , AnySuffix (\_ -> writeIORef v_Keep_s_files True) )
216 , ( "keep-raw-s-file", AnySuffix (\_ -> writeIORef v_Keep_raw_s_files True) )
217 , ( "keep-tmp-files" , AnySuffix (\_ -> writeIORef v_Keep_tmp_files True) )
219 , ( "split-objs" , NoArg (if can_split
220 then do writeIORef v_Split_object_files True
221 add v_Opt_C "-fglobalise-toplev-names"
222 else hPutStrLn stderr
223 "warning: don't know how to split \
224 \object files on this architecture"
227 ------- Include/Import Paths ----------------------------------------
228 , ( "i" , OptPrefix (addToDirList v_Import_paths) )
229 , ( "I" , Prefix (addToDirList v_Include_paths) )
231 ------- Libraries ---------------------------------------------------
232 , ( "L" , Prefix (addToDirList v_Library_paths) )
233 , ( "l" , Prefix (add v_Cmdline_libraries) )
235 ------- Packages ----------------------------------------------------
236 , ( "package-name" , HasArg (\s -> add v_Opt_C ("-inpackage="++s)) )
238 , ( "package" , HasArg (addPackage) )
239 , ( "syslib" , HasArg (addPackage) ) -- for compatibility w/ old vsns
241 , ( "-list-packages" , NoArg (listPackages) )
242 , ( "-add-package" , NoArg (newPackage) )
243 , ( "-delete-package" , SepArg (deletePackage) )
245 ------- Specific phases --------------------------------------------
246 , ( "pgmL" , HasArg (writeIORef v_Pgm_L) )
247 , ( "pgmP" , HasArg (writeIORef v_Pgm_P) )
248 , ( "pgmc" , HasArg (writeIORef v_Pgm_c) )
249 , ( "pgmm" , HasArg (writeIORef v_Pgm_m) )
250 , ( "pgms" , HasArg (writeIORef v_Pgm_s) )
251 , ( "pgma" , HasArg (writeIORef v_Pgm_a) )
252 , ( "pgml" , HasArg (writeIORef v_Pgm_l) )
254 , ( "optdep" , HasArg (add v_Opt_dep) )
255 , ( "optl" , HasArg (add v_Opt_l) )
256 , ( "optdll" , HasArg (add v_Opt_dll) )
258 ------ Warning opts -------------------------------------------------
259 , ( "W" , NoArg (writeIORef v_Warning_opt W_) )
260 , ( "Wall" , NoArg (writeIORef v_Warning_opt W_all) )
261 , ( "Wnot" , NoArg (writeIORef v_Warning_opt W_not) )
262 , ( "w" , NoArg (writeIORef v_Warning_opt W_not) )
264 ----- Linker --------------------------------------------------------
265 , ( "static" , NoArg (writeIORef v_Static True) )
266 , ( "dynamic" , NoArg (writeIORef v_Static False) )
267 , ( "rdynamic" , NoArg (return ()) ) -- ignored for compat w/ gcc
269 ----- RTS opts ------------------------------------------------------
270 , ( "H" , HasArg (setHeapSize . fromIntegral . decodeSize) )
271 , ( "Rghc-timing" , NoArg (enableTimingStats) )
273 ------ Compiler flags -----------------------------------------------
274 , ( "O2-for-C" , NoArg (writeIORef v_minus_o2_for_C True) )
275 , ( "O" , OptPrefix (setOptLevel) )
277 , ( "fno-asm-mangling" , NoArg (writeIORef v_Do_asm_mangling False) )
279 , ( "fmax-simplifier-iterations",
280 Prefix (writeIORef v_MaxSimplifierIterations . read) )
282 , ( "fusagesp" , NoArg (do writeIORef v_UsageSPInf True
283 add v_Opt_C "-fusagesp-on") )
285 , ( "fexcess-precision" , NoArg (do writeIORef v_Excess_precision True
286 add v_Opt_C "-fexcess-precision"))
288 -- Optimisation flags are treated specially, so the normal
289 -- -fno-* pattern below doesn't work. We therefore allow
290 -- certain optimisation passes to be turned off explicitly:
291 , ( "fno-strictness" , NoArg (writeIORef v_Strictness False) )
292 , ( "fno-cpr" , NoArg (writeIORef v_CPR False) )
293 , ( "fno-cse" , NoArg (writeIORef v_CSE False) )
295 -- flags that are "active negatives"
296 , ( "fno-prune-tydecls" , PassFlag (add v_Opt_C) )
297 , ( "fno-prune-instdecls" , PassFlag (add v_Opt_C) )
298 , ( "fno-pre-inlining" , PassFlag (add v_Opt_C) )
300 -- All other "-fno-<blah>" options cancel out "-f<blah>" on the hsc cmdline
301 , ( "fno-", PrefixPred (\s -> isStaticHscFlag ("f"++s))
302 (\s -> add v_Anti_opt_C ("-f"++s)) )
304 -- Pass all remaining "-f<blah>" options to hsc
305 , ( "f", AnySuffixPred (isStaticHscFlag) (add v_Opt_C) )
308 -----------------------------------------------------------------------------
309 -- parse the dynamic arguments
312 -- is the "baseline" dynamic flags, initialised from
313 -- the defaults and command line options, and updated by the
314 -- ':s' command in GHCi.
317 -- is the dynamic flags for the current compilation. It is reset
318 -- to the value of v_InitDynFlags before each compilation, then
319 -- updated by reading any OPTIONS pragma in the current module.
321 GLOBAL_VAR(v_InitDynFlags, defaultDynFlags, DynFlags)
322 GLOBAL_VAR(v_DynFlags, defaultDynFlags, DynFlags)
325 dfs <- readIORef v_DynFlags
326 writeIORef v_DynFlags (f dfs)
328 getDynFlags :: IO DynFlags
329 getDynFlags = readIORef v_DynFlags
331 dynFlag :: (DynFlags -> a) -> IO a
332 dynFlag f = do dflags <- readIORef v_DynFlags; return (f dflags)
334 setDynFlag f = updDynFlags (\dfs -> dfs{ flags = f : flags dfs })
335 unSetDynFlag f = updDynFlags (\dfs -> dfs{ flags = filter (/= f) (flags dfs) })
337 addOpt_L a = updDynFlags (\s -> s{opt_L = a : opt_L s})
338 addOpt_P a = updDynFlags (\s -> s{opt_P = a : opt_P s})
339 addOpt_c a = updDynFlags (\s -> s{opt_c = a : opt_c s})
340 addOpt_a a = updDynFlags (\s -> s{opt_a = a : opt_a s})
341 addOpt_m a = updDynFlags (\s -> s{opt_m = a : opt_m s})
343 addCmdlineHCInclude a =
344 updDynFlags (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
346 -- we add to the options from the front, so we need to reverse the list
347 getOpts :: (DynFlags -> [a]) -> IO [a]
348 getOpts opts = dynFlag opts >>= return . reverse
350 -- we can only change HscC to HscAsm and vice-versa with dynamic flags
351 -- (-fvia-C and -fasm).
353 dfs <- readIORef v_DynFlags
355 HscC -> writeIORef v_DynFlags dfs{ hscLang = l }
356 HscAsm -> writeIORef v_DynFlags dfs{ hscLang = l }
359 setVerbosityAtLeast n =
360 updDynFlags (\dfs -> if verbosity dfs < n
361 then dfs{ verbosity = n }
364 setVerbosity "" = updDynFlags (\dfs -> dfs{ verbosity = 3 })
366 | all isDigit n = updDynFlags (\dfs -> dfs{ verbosity = read n })
367 | otherwise = throwDyn (OtherError "can't parse verbosity flag (-v<n>)")
370 verb <- dynFlag verbosity
371 if verb >= 3 then return "-v" else return ""
375 ( "cpp", NoArg (updDynFlags (\s -> s{ cppFlag = True })) )
376 , ( "#include", HasArg (addCmdlineHCInclude) )
378 , ( "v", OptPrefix (setVerbosity) )
380 , ( "optL", HasArg (addOpt_L) )
381 , ( "optP", HasArg (addOpt_P) )
382 , ( "optc", HasArg (addOpt_c) )
383 , ( "optm", HasArg (addOpt_m) )
384 , ( "opta", HasArg (addOpt_a) )
386 ------ HsCpp opts ---------------------------------------------------
387 , ( "D", Prefix (\s -> addOpt_P ("-D'"++s++"'") ) )
388 , ( "U", Prefix (\s -> addOpt_P ("-U'"++s++"'") ) )
390 ------ Debugging ----------------------------------------------------
391 , ( "dstg-stats", NoArg (writeIORef v_StgStats True) )
393 , ( "ddump-absC", NoArg (setDynFlag Opt_D_dump_absC) )
394 , ( "ddump-asm", NoArg (setDynFlag Opt_D_dump_asm) )
395 , ( "ddump-cpranal", NoArg (setDynFlag Opt_D_dump_cpranal) )
396 , ( "ddump-deriv", NoArg (setDynFlag Opt_D_dump_deriv) )
397 , ( "ddump-ds", NoArg (setDynFlag Opt_D_dump_ds) )
398 , ( "ddump-flatC", NoArg (setDynFlag Opt_D_dump_flatC) )
399 , ( "ddump-foreign", NoArg (setDynFlag Opt_D_dump_foreign) )
400 , ( "ddump-inlinings", NoArg (setDynFlag Opt_D_dump_inlinings) )
401 , ( "ddump-occur-anal", NoArg (setDynFlag Opt_D_dump_occur_anal) )
402 , ( "ddump-parsed", NoArg (setDynFlag Opt_D_dump_parsed) )
403 , ( "ddump-realC", NoArg (setDynFlag Opt_D_dump_realC) )
404 , ( "ddump-rn", NoArg (setDynFlag Opt_D_dump_rn) )
405 , ( "ddump-simpl", NoArg (setDynFlag Opt_D_dump_simpl) )
406 , ( "ddump-simpl-iterations", NoArg (setDynFlag Opt_D_dump_simpl_iterations) )
407 , ( "ddump-spec", NoArg (setDynFlag Opt_D_dump_spec) )
408 , ( "ddump-sat", NoArg (setDynFlag Opt_D_dump_sat) )
409 , ( "ddump-stg", NoArg (setDynFlag Opt_D_dump_stg) )
410 , ( "ddump-stranal", NoArg (setDynFlag Opt_D_dump_stranal) )
411 , ( "ddump-tc", NoArg (setDynFlag Opt_D_dump_tc) )
412 , ( "ddump-types", NoArg (setDynFlag Opt_D_dump_types) )
413 , ( "ddump-rules", NoArg (setDynFlag Opt_D_dump_rules) )
414 , ( "ddump-usagesp", NoArg (setDynFlag Opt_D_dump_usagesp) )
415 , ( "ddump-cse", NoArg (setDynFlag Opt_D_dump_cse) )
416 , ( "ddump-worker-wrapper", NoArg (setDynFlag Opt_D_dump_worker_wrapper) )
417 , ( "dshow-passes", NoArg (setVerbosity "2") )
418 , ( "ddump-rn-trace", NoArg (setDynFlag Opt_D_dump_rn_trace) )
419 , ( "ddump-rn-stats", NoArg (setDynFlag Opt_D_dump_rn_stats) )
420 , ( "ddump-stix", NoArg (setDynFlag Opt_D_dump_stix) )
421 , ( "ddump-simpl-stats", NoArg (setDynFlag Opt_D_dump_simpl_stats) )
422 , ( "ddump-bcos", NoArg (setDynFlag Opt_D_dump_BCOs) )
423 , ( "dsource-stats", NoArg (setDynFlag Opt_D_source_stats) )
424 , ( "dverbose-core2core", NoArg (setDynFlag Opt_D_verbose_core2core) )
425 , ( "dverbose-stg2stg", NoArg (setDynFlag Opt_D_verbose_stg2stg) )
426 , ( "ddump-hi-diffs", NoArg (setDynFlag Opt_D_dump_hi_diffs) )
427 , ( "ddump-hi", NoArg (setDynFlag Opt_D_dump_hi) )
428 , ( "ddump-minimal-imports", NoArg (setDynFlag Opt_D_dump_minimal_imports) )
429 , ( "dcore-lint", NoArg (setDynFlag Opt_DoCoreLinting) )
430 , ( "dstg-lint", NoArg (setDynFlag Opt_DoStgLinting) )
431 , ( "dusagesp-lint", NoArg (setDynFlag Opt_DoUSPLinting) )
433 ------ Machine dependant (-m<blah>) stuff ---------------------------
435 , ( "monly-2-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 2}) ))
436 , ( "monly-3-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 3}) ))
437 , ( "monly-4-regs", NoArg (updDynFlags (\s -> s{stolen_x86_regs = 4}) ))
439 ------ Compiler flags -----------------------------------------------
441 , ( "fasm", AnySuffix (\_ -> setLang HscAsm) )
442 , ( "fvia-c", NoArg (setLang HscC) )
443 , ( "fvia-C", NoArg (setLang HscC) )
445 -- "active negatives"
446 , ( "fno-implicit-prelude", NoArg (setDynFlag Opt_NoImplicitPrelude) )
448 -- the rest of the -f* and -fno-* flags
449 , ( "fno-", PrefixPred (\f -> isFFlag f) (\f -> unSetDynFlag (getFFlag f)) )
450 , ( "f", PrefixPred (\f -> isFFlag f) (\f -> setDynFlag (getFFlag f)) )
453 -- these -f<blah> flags can all be reversed with -fno-<blah>
456 ( "warn-duplicate-exports", Opt_WarnDuplicateExports ),
457 ( "warn-hi-shadowing", Opt_WarnHiShadows ),
458 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns ),
459 ( "warn-missing-fields", Opt_WarnMissingFields ),
460 ( "warn-missing-methods", Opt_WarnMissingMethods ),
461 ( "warn-missing-signatures", Opt_WarnMissingSigs ),
462 ( "warn-name-shadowing", Opt_WarnNameShadowing ),
463 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns ),
464 ( "warn-simple-patterns", Opt_WarnSimplePatterns ),
465 ( "warn-type-defaults", Opt_WarnTypeDefaults ),
466 ( "warn-unused-binds", Opt_WarnUnusedBinds ),
467 ( "warn-unused-imports", Opt_WarnUnusedImports ),
468 ( "warn-unused-matches", Opt_WarnUnusedMatches ),
469 ( "warn-deprecations", Opt_WarnDeprecations ),
470 ( "glasgow-exts", Opt_GlasgowExts ),
471 ( "allow-overlapping-instances", Opt_AllowOverlappingInstances ),
472 ( "allow-undecidable-instances", Opt_AllowUndecidableInstances ),
473 ( "fgenerics", Opt_Generics ),
474 ( "report-compile", Opt_ReportCompile )
477 isFFlag f = f `elem` (map fst fFlags)
478 getFFlag f = fromJust (lookup f fFlags)
480 -----------------------------------------------------------------------------
481 -- convert sizes like "3.5M" into integers
483 decodeSize :: String -> Integer
485 | c == "" = truncate n
486 | c == "K" || c == "k" = truncate (n * 1000)
487 | c == "M" || c == "m" = truncate (n * 1000 * 1000)
488 | c == "G" || c == "g" = truncate (n * 1000 * 1000 * 1000)
489 | otherwise = throwDyn (OtherError ("can't decode size: " ++ str))
490 where (m, c) = span pred str
492 pred c = isDigit c || c == '.'
494 floatOpt :: IORef Double -> String -> IO ()
495 floatOpt ref str = writeIORef ref (read str :: Double)
497 -----------------------------------------------------------------------------
500 foreign import "setHeapSize" unsafe setHeapSize :: Int -> IO ()
501 foreign import "enableTimingStats" unsafe enableTimingStats :: IO ()
503 -----------------------------------------------------------------------------
504 -- Build the Hsc static command line opts
506 buildStaticHscOpts :: IO [String]
507 buildStaticHscOpts = do
509 opt_C_ <- getStaticOpts v_Opt_C -- misc hsc opts from the command line
512 minus_o <- readIORef v_OptLevel
513 let optimisation_opts =
515 0 -> hsc_minusNoO_flags
516 1 -> hsc_minusO_flags
517 2 -> hsc_minusO2_flags
518 _ -> error "unknown opt level"
521 -- take into account -fno-* flags by removing the equivalent -f*
522 -- flag from our list.
523 anti_flags <- getStaticOpts v_Anti_opt_C
524 let basic_opts = opt_C_ ++ optimisation_opts
525 filtered_opts = filter (`notElem` anti_flags) basic_opts
527 static <- (do s <- readIORef v_Static; if s then return "-static"
530 return ( static : filtered_opts )
532 -----------------------------------------------------------------------------
533 -- Running an external program
535 -- sigh, here because both DriverMkDepend & DriverPipeline need it.
537 runSomething phase_name cmd
539 verb <- dynFlag verbosity
540 when (verb >= 2) $ hPutStrLn stderr ("*** " ++ phase_name)
541 when (verb >= 3) $ hPutStrLn stderr cmd
545 n <- readIORef v_Dry_run
549 exit_code <- kludgedSystem cmd phase_name
551 if exit_code /= ExitSuccess
552 then throwDyn (PhaseFailed phase_name exit_code)
553 else do when (verb >= 3) (hPutStr stderr "\n")
556 -----------------------------------------------------------------------------
557 -- Via-C compilation stuff
559 -- flags returned are: ( all C compilations
560 -- , registerised HC compilations
564 | prefixMatch "alpha" cTARGETPLATFORM
565 = return ( ["-static"], [] )
567 | prefixMatch "hppa" cTARGETPLATFORM
568 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
569 -- (very nice, but too bad the HP /usr/include files don't agree.)
570 = return ( ["-static", "-D_HPUX_SOURCE"], [] )
572 | prefixMatch "m68k" cTARGETPLATFORM
573 -- -fno-defer-pop : for the .hc files, we want all the pushing/
574 -- popping of args to routines to be explicit; if we let things
575 -- be deferred 'til after an STGJUMP, imminent death is certain!
577 -- -fomit-frame-pointer : *don't*
578 -- It's better to have a6 completely tied up being a frame pointer
579 -- rather than let GCC pick random things to do with it.
580 -- (If we want to steal a6, then we would try to do things
581 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
582 = return ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
584 | prefixMatch "i386" cTARGETPLATFORM
585 -- -fno-defer-pop : basically the same game as for m68k
587 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
588 -- the fp (%ebp) for our register maps.
589 = do n_regs <- dynFlag stolen_x86_regs
590 sta <- readIORef v_Static
591 return ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else "",
592 if suffixMatch "mingw32" cTARGETPLATFORM then "-mno-cygwin" else "" ],
593 [ "-fno-defer-pop", "-fomit-frame-pointer",
594 "-DSTOLEN_X86_REGS="++show n_regs ]
597 | prefixMatch "mips" cTARGETPLATFORM
598 = return ( ["static"], [] )
600 | prefixMatch "powerpc" cTARGETPLATFORM || prefixMatch "rs6000" cTARGETPLATFORM
601 = return ( ["static"], ["-finhibit-size-directive"] )