1 -----------------------------------------------------------------------------
3 -- (c) The University of Glasgow 2001-2003
5 -- Access to system tools: gcc, cp, rm etc
7 -----------------------------------------------------------------------------
14 getTopDir, -- IO String -- The value of $topdir
15 getPackageConfigPath, -- IO String -- Where package.conf is
16 getUsageMsgPaths, -- IO (String,String)
18 -- Interface to system tools
19 runUnlit, runCpp, runCc, -- [Option] -> IO ()
20 runPp, -- [Option] -> IO ()
21 runMangle, runSplit, -- [Option] -> IO ()
22 runAs, runLink, -- [Option] -> IO ()
25 touch, -- String -> String -> IO ()
26 copy, -- String -> String -> String -> IO ()
27 normalisePath, -- FilePath -> FilePath
29 -- Temporary-file management
32 cleanTempFiles, cleanTempFilesExcept,
36 system, -- String -> IO ExitCode
39 getSysMan, -- IO String Parallel system only
45 #include "HsVersions.h"
47 import DriverPhases ( isHaskellUserSrcFilename )
50 import ErrUtils ( putMsg, debugTraceMsg, showPass, Severity(..), Messages )
51 import Panic ( GhcException(..) )
52 import Util ( Suffix, global, notNull, consIORef, joinFileName,
53 normalisePath, pgmPath, platformPath, joinFileExt )
54 import DynFlags ( DynFlags(..), DynFlag(..), dopt, Option(..),
55 setTmpDir, defaultDynFlags )
57 import EXCEPTION ( throwDyn, finally )
58 import DATA_IOREF ( IORef, readIORef, writeIORef )
61 import Monad ( when, unless )
62 import System ( ExitCode(..), getEnv, system )
63 import IO ( try, catch, hGetContents,
64 openFile, hPutStr, hClose, hFlush, IOMode(..),
65 stderr, ioError, isDoesNotExistError )
66 import Directory ( doesFileExist, removeFile )
67 import Maybe ( isJust )
68 import List ( partition )
70 -- GHC <= 4.08 didn't have rawSystem, and runs into problems with long command
71 -- lines on mingw32, so we disallow it now.
72 #if __GLASGOW_HASKELL__ < 500
73 #error GHC >= 5.00 is required for bootstrapping GHC
76 #ifndef mingw32_HOST_OS
77 #if __GLASGOW_HASKELL__ > 504
78 import qualified System.Posix.Internals
80 import qualified Posix
82 #else /* Must be Win32 */
83 import List ( isPrefixOf )
84 import Util ( dropList )
86 import CString ( CString, peekCString )
89 #if __GLASGOW_HASKELL__ < 603
90 -- rawSystem comes from libghccompat.a in stage1
91 import Compat.RawSystem ( rawSystem )
92 import GHC.IOBase ( IOErrorType(..) )
93 import System.IO.Error ( ioeGetErrorType )
95 import System.Process ( runInteractiveProcess, getProcessExitCode )
96 import System.IO ( hSetBuffering, hGetLine, BufferMode(..) )
97 import Control.Concurrent( forkIO, newChan, readChan, writeChan )
99 import Data.Char ( isSpace )
100 import FastString ( mkFastString )
101 import SrcLoc ( SrcLoc, mkSrcLoc, noSrcSpan, mkSrcSpan )
106 The configuration story
107 ~~~~~~~~~~~~~~~~~~~~~~~
109 GHC needs various support files (library packages, RTS etc), plus
110 various auxiliary programs (cp, gcc, etc). It finds these in one
113 * When running as an *installed program*, GHC finds most of this support
114 stuff in the installed library tree. The path to this tree is passed
115 to GHC via the -B flag, and given to initSysTools .
117 * When running *in-place* in a build tree, GHC finds most of this support
118 stuff in the build tree. The path to the build tree is, again passed
121 GHC tells which of the two is the case by seeing whether package.conf
122 is in TopDir [installed] or in TopDir/ghc/driver [inplace] (what a hack).
125 SysTools.initSysProgs figures out exactly where all the auxiliary programs
126 are, and initialises mutable variables to make it easy to call them.
127 To to this, it makes use of definitions in Config.hs, which is a Haskell
128 file containing variables whose value is figured out by the build system.
130 Config.hs contains two sorts of things
132 cGCC, The *names* of the programs
135 etc They do *not* include paths
138 cUNLIT_DIR_REL The *path* to the directory containing unlit, split etc
139 cSPLIT_DIR_REL *relative* to the root of the build tree,
140 for use when running *in-place* in a build tree (only)
144 ---------------------------------------------
145 NOTES for an ALTERNATIVE scheme (i.e *not* what is currently implemented):
147 Another hair-brained scheme for simplifying the current tool location
148 nightmare in GHC: Simon originally suggested using another
149 configuration file along the lines of GCC's specs file - which is fine
150 except that it means adding code to read yet another configuration
151 file. What I didn't notice is that the current package.conf is
152 general enough to do this:
155 {name = "tools", import_dirs = [], source_dirs = [],
156 library_dirs = [], hs_libraries = [], extra_libraries = [],
157 include_dirs = [], c_includes = [], package_deps = [],
158 extra_ghc_opts = ["-pgmc/usr/bin/gcc","-pgml${topdir}/bin/unlit", ... etc.],
159 extra_cc_opts = [], extra_ld_opts = []}
161 Which would have the advantage that we get to collect together in one
162 place the path-specific package stuff with the path-specific tool
165 ---------------------------------------------
168 %************************************************************************
170 \subsection{Global variables to contain system programs}
172 %************************************************************************
174 All these pathnames are maintained IN THE NATIVE FORMAT OF THE HOST MACHINE.
175 (See remarks under pathnames below)
178 GLOBAL_VAR(v_Pgm_T, error "pgm_T", String) -- touch
179 GLOBAL_VAR(v_Pgm_CP, error "pgm_CP", String) -- cp
181 GLOBAL_VAR(v_Path_package_config, error "path_package_config", String)
182 GLOBAL_VAR(v_Path_usages, error "ghc_usage.txt", (String,String))
184 GLOBAL_VAR(v_TopDir, error "TopDir", String) -- -B<dir>
186 -- Parallel system only
187 GLOBAL_VAR(v_Pgm_sysman, error "pgm_sysman", String) -- system manager
189 -- ways to get at some of these variables from outside this module
190 getPackageConfigPath = readIORef v_Path_package_config
191 getTopDir = readIORef v_TopDir
195 %************************************************************************
197 \subsection{Initialisation}
199 %************************************************************************
202 initSysTools :: Maybe String -- Maybe TopDir path (without the '-B' prefix)
205 -> IO DynFlags -- Set all the mutable variables above, holding
206 -- (a) the system programs
207 -- (b) the package-config file
208 -- (c) the GHC usage message
211 initSysTools mbMinusB dflags
212 = do { (am_installed, top_dir) <- findTopDir mbMinusB
213 ; writeIORef v_TopDir top_dir
215 -- for "installed" this is the root of GHC's support files
216 -- for "in-place" it is the root of the build tree
217 -- NB: top_dir is assumed to be in standard Unix format '/' separated
219 ; let installed, installed_bin :: FilePath -> FilePath
220 installed_bin pgm = pgmPath top_dir pgm
221 installed file = pgmPath top_dir file
222 inplace dir pgm = pgmPath (top_dir `joinFileName`
223 cPROJECT_DIR `joinFileName` dir) pgm
226 | am_installed = installed "package.conf"
227 | otherwise = inplace cGHC_DRIVER_DIR_REL "package.conf.inplace"
230 | am_installed = installed "ghc-usage.txt"
231 | otherwise = inplace cGHC_DRIVER_DIR_REL "ghc-usage.txt"
234 | am_installed = installed "ghci-usage.txt"
235 | otherwise = inplace cGHC_DRIVER_DIR_REL "ghci-usage.txt"
237 -- For all systems, unlit, split, mangle are GHC utilities
238 -- architecture-specific stuff is done when building Config.hs
240 | am_installed = installed_bin cGHC_UNLIT_PGM
241 | otherwise = inplace cGHC_UNLIT_DIR_REL cGHC_UNLIT_PGM
243 -- split and mangle are Perl scripts
245 | am_installed = installed_bin cGHC_SPLIT_PGM
246 | otherwise = inplace cGHC_SPLIT_DIR_REL cGHC_SPLIT_PGM
249 | am_installed = installed_bin cGHC_MANGLER_PGM
250 | otherwise = inplace cGHC_MANGLER_DIR_REL cGHC_MANGLER_PGM
252 ; let dflags0 = defaultDynFlags
253 #ifndef mingw32_HOST_OS
254 -- check whether TMPDIR is set in the environment
255 ; e_tmpdir <- IO.try (getEnv "TMPDIR") -- fails if not set
257 -- On Win32, consult GetTempPath() for a temp dir.
258 -- => it first tries TMP, TEMP, then finally the
259 -- Windows directory(!). The directory is in short-path
263 let len = (2048::Int)
264 buf <- mallocArray len
265 ret <- getTempPath len buf
267 -- failed, consult TMPDIR.
275 ; let dflags1 = case e_tmpdir of
277 Right d -> setTmpDir d dflags0
279 -- Check that the package config exists
280 ; config_exists <- doesFileExist pkgconfig_path
281 ; when (not config_exists) $
282 throwDyn (InstallationError
283 ("Can't find package.conf as " ++ pkgconfig_path))
285 #if defined(mingw32_HOST_OS)
286 -- WINDOWS-SPECIFIC STUFF
287 -- On Windows, gcc and friends are distributed with GHC,
288 -- so when "installed" we look in TopDir/bin
289 -- When "in-place" we look wherever the build-time configure
291 -- When "install" we tell gcc where its specs file + exes are (-B)
292 -- and also some places to pick up include files. We need
293 -- to be careful to put all necessary exes in the -B place
294 -- (as, ld, cc1, etc) since if they don't get found there, gcc
295 -- then tries to run unadorned "as", "ld", etc, and will
296 -- pick up whatever happens to be lying around in the path,
297 -- possibly including those from a cygwin install on the target,
298 -- which is exactly what we're trying to avoid.
299 ; let gcc_b_arg = Option ("-B" ++ installed "gcc-lib/")
301 | am_installed = (installed_bin "gcc", [gcc_b_arg])
302 | otherwise = (cGCC, [])
303 -- The trailing "/" is absolutely essential; gcc seems
304 -- to construct file names simply by concatenating to
305 -- this -B path with no extra slash We use "/" rather
306 -- than "\\" because otherwise "\\\" is mangled
307 -- later on; although gcc_args are in NATIVE format,
309 -- (see comments with declarations of global variables)
311 -- The quotes round the -B argument are in case TopDir
314 perl_path | am_installed = installed_bin cGHC_PERL
315 | otherwise = cGHC_PERL
317 -- 'touch' is a GHC util for Windows, and similarly unlit, mangle
318 ; let touch_path | am_installed = installed_bin cGHC_TOUCHY_PGM
319 | otherwise = inplace cGHC_TOUCHY_DIR_REL cGHC_TOUCHY_PGM
321 -- On Win32 we don't want to rely on #!/bin/perl, so we prepend
322 -- a call to Perl to get the invocation of split and mangle
323 ; let (split_prog, split_args) = (perl_path, [Option split_script])
324 (mangle_prog, mangle_args) = (perl_path, [Option mangle_script])
326 ; let (mkdll_prog, mkdll_args)
328 (pgmPath (installed "gcc-lib/") cMKDLL,
329 [ Option "--dlltool-name",
330 Option (pgmPath (installed "gcc-lib/") "dlltool"),
331 Option "--driver-name",
332 Option gcc_prog, gcc_b_arg ])
333 | otherwise = (cMKDLL, [])
335 -- UNIX-SPECIFIC STUFF
336 -- On Unix, the "standard" tools are assumed to be
337 -- in the same place whether we are running "in-place" or "installed"
338 -- That place is wherever the build-time configure script found them.
339 ; let gcc_prog = cGCC
342 mkdll_prog = panic "Can't build DLLs on a non-Win32 system"
345 -- On Unix, scripts are invoked using the '#!' method. Binary
346 -- installations of GHC on Unix place the correct line on the front
347 -- of the script at installation time, so we don't want to wire-in
348 -- our knowledge of $(PERL) on the host system here.
349 ; let (split_prog, split_args) = (split_script, [])
350 (mangle_prog, mangle_args) = (mangle_script, [])
353 -- cpp is derived from gcc on all platforms
354 -- HACK, see setPgmP below. We keep 'words' here to remember to fix
355 -- Config.hs one day.
356 ; let cpp_path = (gcc_prog, gcc_args ++
357 (Option "-E"):(map Option (words cRAWCPP_FLAGS)))
359 -- For all systems, copy and remove are provided by the host
360 -- system; architecture-specific stuff is done when building Config.hs
361 ; let cp_path = cGHC_CP
363 -- Other things being equal, as and ld are simply gcc
364 ; let (as_prog,as_args) = (gcc_prog,gcc_args)
365 (ld_prog,ld_args) = (gcc_prog,gcc_args)
367 -- Initialise the global vars
368 ; writeIORef v_Path_package_config pkgconfig_path
369 ; writeIORef v_Path_usages (ghc_usage_msg_path,
372 ; writeIORef v_Pgm_sysman (top_dir ++ "/ghc/rts/parallel/SysMan")
373 -- Hans: this isn't right in general, but you can
374 -- elaborate it in the same way as the others
376 ; writeIORef v_Pgm_T touch_path
377 ; writeIORef v_Pgm_CP cp_path
383 pgm_c = (gcc_prog,gcc_args),
384 pgm_m = (mangle_prog,mangle_args),
385 pgm_s = (split_prog,split_args),
386 pgm_a = (as_prog,as_args),
387 pgm_l = (ld_prog,ld_args),
388 pgm_dll = (mkdll_prog,mkdll_args) }
391 #if defined(mingw32_HOST_OS)
392 foreign import stdcall unsafe "GetTempPathA" getTempPath :: Int -> CString -> IO Int32
398 -- for "installed" this is the root of GHC's support files
399 -- for "in-place" it is the root of the build tree
402 -- 1. Set proto_top_dir
403 -- if there is no given TopDir path, get the directory
404 -- where GHC is running (only on Windows)
406 -- 2. If package.conf exists in proto_top_dir, we are running
407 -- installed; and TopDir = proto_top_dir
409 -- 3. Otherwise we are running in-place, so
410 -- proto_top_dir will be /...stuff.../ghc/compiler
411 -- Set TopDir to /...stuff..., which is the root of the build tree
413 -- This is very gruesome indeed
415 findTopDir :: Maybe String -- Maybe TopDir path (without the '-B' prefix).
416 -> IO (Bool, -- True <=> am installed, False <=> in-place
417 String) -- TopDir (in Unix format '/' separated)
420 = do { top_dir <- get_proto
421 -- Discover whether we're running in a build tree or in an installation,
422 -- by looking for the package configuration file.
423 ; am_installed <- doesFileExist (top_dir `joinFileName` "package.conf")
425 ; return (am_installed, top_dir)
428 -- get_proto returns a Unix-format path (relying on getBaseDir to do so too)
429 get_proto = case mbMinusB of
430 Just minusb -> return (normalisePath minusb)
432 -> do maybe_exec_dir <- getBaseDir -- Get directory of executable
433 case maybe_exec_dir of -- (only works on Windows;
434 -- returns Nothing on Unix)
435 Nothing -> throwDyn (InstallationError "missing -B<dir> option")
436 Just dir -> return dir
440 %************************************************************************
442 \subsection{Running an external program}
444 %************************************************************************
448 runUnlit :: DynFlags -> [Option] -> IO ()
449 runUnlit dflags args = do
451 runSomething dflags "Literate pre-processor" p args
453 runCpp :: DynFlags -> [Option] -> IO ()
454 runCpp dflags args = do
455 let (p,args0) = pgm_P dflags
456 runSomething dflags "C pre-processor" p (args0 ++ args)
458 runPp :: DynFlags -> [Option] -> IO ()
459 runPp dflags args = do
461 runSomething dflags "Haskell pre-processor" p args
463 runCc :: DynFlags -> [Option] -> IO ()
464 runCc dflags args = do
465 let (p,args0) = pgm_c dflags
466 runSomethingFiltered dflags cc_filter "C Compiler" p (args0++args)
468 -- discard some harmless warnings from gcc that we can't turn off
469 cc_filter str = unlines (do_filter (lines str))
473 | (w:rest) <- dropWhile (isJust .matchRegex r_from) ls,
474 isJust (matchRegex r_warn w)
479 r_from = mkRegex "from.*:[0-9]+"
480 r_warn = mkRegex "warning: call-clobbered register used"
482 runMangle :: DynFlags -> [Option] -> IO ()
483 runMangle dflags args = do
484 let (p,args0) = pgm_m dflags
485 runSomething dflags "Mangler" p (args0++args)
487 runSplit :: DynFlags -> [Option] -> IO ()
488 runSplit dflags args = do
489 let (p,args0) = pgm_s dflags
490 runSomething dflags "Splitter" p (args0++args)
492 runAs :: DynFlags -> [Option] -> IO ()
493 runAs dflags args = do
494 let (p,args0) = pgm_a dflags
495 runSomething dflags "Assembler" p (args0++args)
497 runLink :: DynFlags -> [Option] -> IO ()
498 runLink dflags args = do
499 let (p,args0) = pgm_l dflags
500 runSomething dflags "Linker" p (args0++args)
502 runMkDLL :: DynFlags -> [Option] -> IO ()
503 runMkDLL dflags args = do
504 let (p,args0) = pgm_dll dflags
505 runSomething dflags "Make DLL" p (args0++args)
507 touch :: DynFlags -> String -> String -> IO ()
508 touch dflags purpose arg = do
509 p <- readIORef v_Pgm_T
510 runSomething dflags purpose p [FileOption "" arg]
512 copy :: DynFlags -> String -> String -> String -> IO ()
513 copy dflags purpose from to = do
514 showPass dflags purpose
516 h <- openFile to WriteMode
517 ls <- readFile from -- inefficient, but it'll do for now.
518 -- ToDo: speed up via slurping.
525 getSysMan :: IO String -- How to invoke the system manager
526 -- (parallel system only)
527 getSysMan = readIORef v_Pgm_sysman
531 getUsageMsgPaths :: IO (FilePath,FilePath)
532 -- the filenames of the usage messages (ghc, ghci)
533 getUsageMsgPaths = readIORef v_Path_usages
537 %************************************************************************
539 \subsection{Managing temporary files
541 %************************************************************************
544 GLOBAL_VAR(v_FilesToClean, [], [String] )
548 cleanTempFiles :: DynFlags -> IO ()
549 cleanTempFiles dflags
550 = do fs <- readIORef v_FilesToClean
551 removeTmpFiles dflags fs
552 writeIORef v_FilesToClean []
554 cleanTempFilesExcept :: DynFlags -> [FilePath] -> IO ()
555 cleanTempFilesExcept dflags dont_delete
556 = do files <- readIORef v_FilesToClean
557 let (to_keep, to_delete) = partition (`elem` dont_delete) files
558 removeTmpFiles dflags to_delete
559 writeIORef v_FilesToClean to_keep
562 -- find a temporary name that doesn't already exist.
563 newTempName :: DynFlags -> Suffix -> IO FilePath
564 newTempName DynFlags{tmpDir=tmp_dir} extn
565 = do x <- getProcessID
566 findTempName (tmp_dir ++ "/ghc" ++ show x ++ "_") 0
568 findTempName prefix x
569 = do let filename = (prefix ++ show x) `joinFileExt` extn
570 b <- doesFileExist filename
571 if b then findTempName prefix (x+1)
572 else do consIORef v_FilesToClean filename -- clean it up later
575 addFilesToClean :: [FilePath] -> IO ()
576 -- May include wildcards [used by DriverPipeline.run_phase SplitMangle]
577 addFilesToClean files = mapM_ (consIORef v_FilesToClean) files
579 removeTmpFiles :: DynFlags -> [FilePath] -> IO ()
580 removeTmpFiles dflags fs
582 traceCmd dflags "Deleting temp files"
583 ("Deleting: " ++ unwords deletees)
586 -- Flat out refuse to delete files that are likely to be source input
587 -- files (is there a worse bug than having a compiler delete your source
590 -- Deleting source files is a sign of a bug elsewhere, so prominently flag
593 | null non_deletees = act
595 putMsg dflags (text "WARNING - NOT deleting source files:" <+> hsep (map text non_deletees))
598 (non_deletees, deletees) = partition isHaskellUserSrcFilename fs
600 rm f = removeFile f `IO.catch`
602 debugTraceMsg dflags 2 (ptext SLIT("Warning: deleting non-existent") <+> text f)
606 -----------------------------------------------------------------------------
607 -- Running an external program
609 runSomething :: DynFlags
610 -> String -- For -v message
611 -> String -- Command name (possibly a full path)
612 -- assumed already dos-ified
613 -> [Option] -- Arguments
614 -- runSomething will dos-ify them
617 runSomething dflags phase_name pgm args =
618 runSomethingFiltered dflags id phase_name pgm args
621 :: DynFlags -> (String->String) -> String -> String -> [Option] -> IO ()
623 runSomethingFiltered dflags filter_fn phase_name pgm args = do
624 let real_args = filter notNull (map showOpt args)
625 traceCmd dflags phase_name (unwords (pgm:real_args)) $ do
626 (exit_code, doesn'tExist) <-
628 rc <- builderMainLoop dflags filter_fn pgm real_args
630 ExitSuccess{} -> return (rc, False)
632 -- rawSystem returns (ExitFailure 127) if the exec failed for any
633 -- reason (eg. the program doesn't exist). This is the only clue
634 -- we have, but we need to report something to the user because in
635 -- the case of a missing program there will otherwise be no output
637 | n == 127 -> return (rc, True)
638 | otherwise -> return (rc, False))
639 -- Should 'rawSystem' generate an IO exception indicating that
640 -- 'pgm' couldn't be run rather than a funky return code, catch
641 -- this here (the win32 version does this, but it doesn't hurt
642 -- to test for this in general.)
644 if IO.isDoesNotExistError err
645 #if defined(mingw32_HOST_OS) && __GLASGOW_HASKELL__ < 604
646 -- the 'compat' version of rawSystem under mingw32 always
647 -- maps 'errno' to EINVAL to failure.
648 || case (ioeGetErrorType err ) of { InvalidArgument{} -> True ; _ -> False}
650 then return (ExitFailure 1, True)
652 case (doesn'tExist, exit_code) of
653 (True, _) -> throwDyn (InstallationError ("could not execute: " ++ pgm))
654 (_, ExitSuccess) -> return ()
655 _ -> throwDyn (PhaseFailed phase_name exit_code)
659 #if __GLASGOW_HASKELL__ < 603
660 builderMainLoop dflags filter_fn pgm real_args = do
661 rawSystem pgm real_args
663 builderMainLoop dflags filter_fn pgm real_args = do
665 (hStdIn, hStdOut, hStdErr, hProcess) <- runInteractiveProcess pgm real_args Nothing Nothing
667 -- and run a loop piping the output from the compiler to the log_action in DynFlags
668 hSetBuffering hStdOut LineBuffering
669 hSetBuffering hStdErr LineBuffering
670 forkIO (readerProc chan hStdOut filter_fn)
671 forkIO (readerProc chan hStdErr filter_fn)
672 rc <- loop chan hProcess 2 1 ExitSuccess
678 -- status starts at zero, and increments each time either
679 -- a reader process gets EOF, or the build proc exits. We wait
680 -- for all of these to happen (status==3).
681 -- ToDo: we should really have a contingency plan in case any of
682 -- the threads dies, such as a timeout.
683 loop chan hProcess 0 0 exitcode = return exitcode
684 loop chan hProcess t p exitcode = do
686 then getProcessExitCode hProcess
689 Just code -> loop chan hProcess t (p-1) code
695 log_action dflags SevInfo noSrcSpan defaultUserStyle msg
696 loop chan hProcess t p exitcode
697 BuildError loc msg -> do
698 log_action dflags SevError (mkSrcSpan loc loc) defaultUserStyle msg
699 loop chan hProcess t p exitcode
701 loop chan hProcess (t-1) p exitcode
702 | otherwise -> loop chan hProcess t p exitcode
704 readerProc chan hdl filter_fn =
705 (do str <- hGetContents hdl
706 loop (lines (filter_fn str)) Nothing)
709 -- ToDo: check errors more carefully
710 -- ToDo: in the future, the filter should be implemented as
711 -- a stream transformer.
713 loop [] Nothing = return ()
714 loop [] (Just err) = writeChan chan err
717 Just err@(BuildError srcLoc msg)
718 | leading_whitespace l -> do
719 loop ls (Just (BuildError srcLoc (msg $$ text l)))
727 = case matchRegex errRegex l of
729 writeChan chan (BuildMsg (text l))
731 Just (file':lineno':colno':msg:_) -> do
732 let file = mkFastString file'
733 lineno = read lineno'::Int
734 colno = case colno' of
736 _ -> read (init colno') :: Int
737 srcLoc = mkSrcLoc file lineno colno
738 loop ls (Just (BuildError srcLoc (text msg)))
740 leading_whitespace [] = False
741 leading_whitespace (x:_) = isSpace x
743 errRegex = mkRegex "^([^:]*):([0-9]+):([0-9]+:)?(.*)"
747 | BuildError !SrcLoc !SDoc
751 showOpt (FileOption pre f) = pre ++ platformPath f
752 showOpt (Option "") = ""
753 showOpt (Option s) = s
755 traceCmd :: DynFlags -> String -> String -> IO () -> IO ()
756 -- a) trace the command (at two levels of verbosity)
757 -- b) don't do it at all if dry-run is set
758 traceCmd dflags phase_name cmd_line action
759 = do { let verb = verbosity dflags
760 ; showPass dflags phase_name
761 ; debugTraceMsg dflags 3 (text cmd_line)
765 ; unless (dopt Opt_DryRun dflags) $ do {
768 ; action `IO.catch` handle_exn verb
771 handle_exn verb exn = do { debugTraceMsg dflags 2 (char '\n')
772 ; debugTraceMsg dflags 2 (ptext SLIT("Failed:") <+> text cmd_line <+> text (show exn))
773 ; throwDyn (PhaseFailed phase_name (ExitFailure 1)) }
776 %************************************************************************
778 \subsection{Support code}
780 %************************************************************************
783 -----------------------------------------------------------------------------
784 -- Define getBaseDir :: IO (Maybe String)
786 getBaseDir :: IO (Maybe String)
787 #if defined(mingw32_HOST_OS)
788 -- Assuming we are running ghc, accessed by path $()/bin/ghc.exe,
789 -- return the path $(stuff). Note that we drop the "bin/" directory too.
790 getBaseDir = do let len = (2048::Int) -- plenty, PATH_MAX is 512 under Win32.
791 buf <- mallocArray len
792 ret <- getModuleFileName nullPtr buf len
793 if ret == 0 then free buf >> return Nothing
794 else do s <- peekCString buf
796 return (Just (rootDir s))
798 rootDir s = reverse (dropList "/bin/ghc.exe" (reverse (normalisePath s)))
800 foreign import stdcall unsafe "GetModuleFileNameA"
801 getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
803 getBaseDir = return Nothing
806 #ifdef mingw32_HOST_OS
807 foreign import ccall unsafe "_getpid" getProcessID :: IO Int -- relies on Int == Int32 on Windows
808 #elif __GLASGOW_HASKELL__ > 504
809 getProcessID :: IO Int
810 getProcessID = System.Posix.Internals.c_getpid >>= return . fromIntegral
812 getProcessID :: IO Int
813 getProcessID = Posix.getProcessID