X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FSysTools.lhs;h=4bd328498e9504dfbff5e2f116417b877429e8c7;hb=ec2ccca277f5779f4699aa27f9628b5578c42924;hp=05514bb342e31a6bf7343316a10d6fa42fe4a682;hpb=0282f593071144bb319226118d36561cab55d723;p=ghc-hetmet.git diff --git a/ghc/compiler/main/SysTools.lhs b/ghc/compiler/main/SysTools.lhs index 05514bb..4bd3284 100644 --- a/ghc/compiler/main/SysTools.lhs +++ b/ghc/compiler/main/SysTools.lhs @@ -1,7 +1,8 @@ ----------------------------------------------------------------------------- --- Access to system tools: gcc, cp, rm etc -- --- (c) The University of Glasgow 2000 +-- (c) The University of Glasgow 2001 +-- +-- Access to system tools: gcc, cp, rm etc -- ----------------------------------------------------------------------------- @@ -13,17 +14,22 @@ module SysTools ( -- Command-line override setDryRun, - packageConfigPath, -- IO String - -- Where package.conf is + getTopDir, -- IO String -- The value of $libdir + getPackageConfigPath, -- IO String -- Where package.conf is -- Interface to system tools - runUnlit, runCpp, runCc, -- [String] -> IO () - runMangle, runSplit, -- [String] -> IO () - runAs, runLink, -- [String] -> IO () + runUnlit, runCpp, runCc, -- [Option] -> IO () + runMangle, runSplit, -- [Option] -> IO () + runAs, runLink, -- [Option] -> IO () runMkDLL, +#ifdef ILX + runIlx2il, runIlasm, -- [String] -> IO () +#endif + touch, -- String -> String -> IO () copy, -- String -> String -> String -> IO () + unDosifyPath, -- String -> String -- Temporary-file management setTmpDir, @@ -33,13 +39,14 @@ module SysTools ( -- System interface getProcessID, -- IO Int - system, -- String -> IO Int + system, -- String -> IO ExitCode -- Misc showGhcUsage, -- IO () Shows usage message and exits getSysMan, -- IO String Parallel system only + + Option(..) - runSomething -- ToDo: make private ) where import DriverUtil @@ -49,32 +56,41 @@ import Panic ( progName, GhcException(..) ) import Util ( global ) import CmdLineOpts ( dynFlag, verbosity ) -import List ( isPrefixOf ) -import Exception ( throw, throwDyn, catchAllIO ) -import IO ( hPutStr, hPutChar, hPutStrLn, hFlush, stderr ) +import Exception ( throwDyn, catchAllIO ) +import IO import Directory ( doesFileExist, removeFile ) import IOExts ( IORef, readIORef, writeIORef ) import Monad ( when, unless ) -import System ( system, ExitCode(..), exitWith ) +import System ( ExitCode(..), exitWith, getEnv, system ) import CString - -#if __GLASGOW_HASKELL__ < 500 -import Addr -import Storable import Int -#endif - +import Addr + #include "../includes/config.h" -#if !defined(mingw32_TARGET_OS) +#ifndef mingw32_TARGET_OS import qualified Posix #else -import Addr ( nullAddr ) +import List ( isPrefixOf ) +import MarshalArray #endif -#include "HsVersions.h" +-- This is a kludge for bootstrapping with 4.08.X. Given that +-- all distributed compilers >= 5.0 will be compiled with themselves. +-- I don't think this kludge is a problem. And we have to start +-- building with >= 5.0 on Win32 anyway. +#if __GLASGOW_HASKELL__ > 408 +-- use the line below when we can be sure of compiling with GHC >= +-- 5.02, and remove the implementation of rawSystem at the end of this +-- file +import PrelIOBase -- this can be removed when SystemExts is used +import CError ( throwErrnoIfMinus1 ) -- as can this +-- import SystemExts ( rawSystem ) +#else +import System ( system ) +#endif -{-# DEPRECATED runSomething "runSomething should be private to SysTools" #-} +#include "HsVersions.h" \end{code} @@ -117,13 +133,37 @@ Config.hs contains two sorts of things +--------------------------------------------- +NOTES for an ALTERNATIVE scheme (i.e *not* what is currently implemented): + +Another hair-brained scheme for simplifying the current tool location +nightmare in GHC: Simon originally suggested using another +configuration file along the lines of GCC's specs file - which is fine +except that it means adding code to read yet another configuration +file. What I didn't notice is that the current package.conf is +general enough to do this: + +Package + {name = "tools", import_dirs = [], source_dirs = [], + library_dirs = [], hs_libraries = [], extra_libraries = [], + include_dirs = [], c_includes = [], package_deps = [], + extra_ghc_opts = ["-pgmc/usr/bin/gcc","-pgml${libdir}/bin/unlit", ... etc.], + extra_cc_opts = [], extra_ld_opts = []} + +Which would have the advantage that we get to collect together in one +place the path-specific package stuff with the path-specific tool +stuff. + End of NOTES +--------------------------------------------- + + %************************************************************************ %* * \subsection{Global variables to contain system programs} %* * %************************************************************************ -All these pathnames are maintained in Unix format. +All these pathnames are maintained IN THE NATIVE FORMAT OF THE HOST MACHINE. (See remarks under pathnames below) \begin{code} @@ -133,6 +173,10 @@ GLOBAL_VAR(v_Pgm_c, error "pgm_c", String) -- gcc GLOBAL_VAR(v_Pgm_m, error "pgm_m", String) -- asm code mangler GLOBAL_VAR(v_Pgm_s, error "pgm_s", String) -- asm code splitter GLOBAL_VAR(v_Pgm_a, error "pgm_a", String) -- as +#ifdef ILX +GLOBAL_VAR(v_Pgm_I, error "pgm_I", String) -- ilx2il +GLOBAL_VAR(v_Pgm_i, error "pgm_i", String) -- ilasm +#endif GLOBAL_VAR(v_Pgm_l, error "pgm_l", String) -- ld GLOBAL_VAR(v_Pgm_MkDLL, error "pgm_dll", String) -- mkdll @@ -142,8 +186,14 @@ GLOBAL_VAR(v_Pgm_CP, error "pgm_CP", String) -- cp GLOBAL_VAR(v_Path_package_config, error "path_package_config", String) GLOBAL_VAR(v_Path_usage, error "ghc_usage.txt", String) +GLOBAL_VAR(v_TopDir, error "TopDir", String) -- -B + -- Parallel system only GLOBAL_VAR(v_Pgm_sysman, error "pgm_sysman", String) -- system manager + +-- ways to get at some of these variables from outside this module +getPackageConfigPath = readIORef v_Path_package_config +getTopDir = readIORef v_TopDir \end{code} @@ -156,22 +206,24 @@ GLOBAL_VAR(v_Pgm_sysman, error "pgm_sysman", String) -- system manager \begin{code} initSysTools :: [String] -- Command-line arguments starting "-B" - -> IO String -- Set all the mutable variables above, holding + -> IO () -- Set all the mutable variables above, holding -- (a) the system programs -- (b) the package-config file -- (c) the GHC usage message - -- Return TopDir initSysTools minusB_args - = do { (am_installed, top_dir) <- getTopDir minusB_args + = do { (am_installed, top_dir) <- findTopDir minusB_args + ; writeIORef v_TopDir top_dir -- top_dir -- for "installed" this is the root of GHC's support files -- for "in-place" it is the root of the build tree + -- NB: top_dir is assumed to be in standard Unix format '/' separated - ; let installed_bin pgm = top_dir `slash` "bin" `slash` pgm - installed file = top_dir `slash` file - inplace dir pgm = top_dir `slash` dir `slash` pgm + ; let installed, installed_bin :: FilePath -> FilePath + installed_bin pgm = pgmPath top_dir pgm + installed file = pgmPath top_dir file + inplace dir pgm = pgmPath (top_dir `slash` dir) pgm ; let pkgconfig_path | am_installed = installed "package.conf" @@ -196,11 +248,47 @@ initSysTools minusB_args | am_installed = installed_bin cGHC_MANGLER | otherwise = inplace cGHC_MANGLER_DIR cGHC_MANGLER +#ifndef mingw32_TARGET_OS + -- check whether TMPDIR is set in the environment + ; IO.try (do dir <- getEnv "TMPDIR" -- fails if not set + setTmpDir dir + return () + ) +#else + -- On Win32, consult GetTempPath() for a temp dir. + -- => it first tries TMP, TEMP, then finally the + -- Windows directory(!). The directory is in short-path + -- form and *does* have a trailing backslash. + ; IO.try (do + let len = (2048::Int) + buf <- mallocArray len + ret <- getTempPath len buf + tdir <- + if ret == 0 then do + -- failed, consult TEMP. + destructArray len buf + getEnv "TMP" + else do + s <- peekCString buf + destructArray len buf + return s + let + -- strip the trailing backslash (awful, but + -- we only do this once). + tmpdir = + case last tdir of + '/' -> init tdir + '\\' -> init tdir + _ -> tdir + setTmpDir tmpdir + return ()) +#endif + -- Check that the package config exists ; config_exists <- doesFileExist pkgconfig_path ; when (not config_exists) $ throwDyn (InstallationError - ("Can't find package.conf in " ++ pkgconfig_path)) + ("Can't find package.conf as " ++ pkgconfig_path)) #if defined(mingw32_TARGET_OS) -- WINDOWS-SPECIFIC STUFF @@ -208,21 +296,36 @@ initSysTools minusB_args -- so when "installed" we look in TopDir/bin -- When "in-place" we look wherever the build-time configure -- script found them - ; let cpp_path | am_installed = installed cRAWCPP - | otherwise = cRAWCPP - gcc_path | am_installed = installed cGCC + -- When "install" we tell gcc where its specs file + exes are (-B) + -- and also some places to pick up include files. We need + -- to be careful to put all necessary exes in the -B place + -- (as, ld, cc1, etc) since if they don't get found there, gcc + -- then tries to run unadorned "as", "ld", etc, and will + -- pick up whatever happens to be lying around in the path, + -- possibly including those from a cygwin install on the target, + -- which is exactly what we're trying to avoid. + ; let gcc_path | am_installed = installed_bin ("gcc -B\"" ++ installed "gcc-lib/\"") | otherwise = cGCC - perl_path | am_installed = installed cGHC_PERL + -- The trailing "/" is absolutely essential; gcc seems + -- to construct file names simply by concatenating to this + -- -B path with no extra slash + -- We use "/" rather than "\\" because otherwise "\\\" is mangled + -- later on; although gcc_path is in NATIVE format, gcc can cope + -- (see comments with declarations of global variables) + -- + -- The quotes round the -B argument are in case TopDir has spaces in it + + perl_path | am_installed = installed_bin cGHC_PERL | otherwise = cGHC_PERL -- 'touch' is a GHC util for Windows, and similarly unlit, mangle - ; let touch_path | am_installed = installed cGHC_TOUCHY + ; let touch_path | am_installed = installed_bin cGHC_TOUCHY | otherwise = inplace cGHC_TOUCHY_DIR cGHC_TOUCHY -- On Win32 we don't want to rely on #!/bin/perl, so we prepend -- a call to Perl to get the invocation of split and mangle - ; let split_path = perl_path ++ " " ++ split_script - mangle_path = perl_path ++ " " ++ mangle_script + ; let split_path = perl_path ++ " \"" ++ split_script ++ "\"" + mangle_path = perl_path ++ " \"" ++ mangle_script ++ "\"" ; let mkdll_path = cMKDLL #else @@ -230,8 +333,7 @@ initSysTools minusB_args -- On Unix, the "standard" tools are assumed to be -- in the same place whether we are running "in-place" or "installed" -- That place is wherever the build-time configure script found them. - ; let cpp_path = cRAWCPP - gcc_path = cGCC + ; let gcc_path = cGCC touch_path = cGHC_TOUCHY mkdll_path = panic "Can't build DLLs on a non-Win32 system" @@ -241,10 +343,12 @@ initSysTools minusB_args -- our knowledge of $(PERL) on the host system here. ; let split_path = split_script mangle_path = mangle_script - #endif - -- For all systems, copy and remove are provided by the host + -- cpp is derived from gcc on all platforms + ; let cpp_path = gcc_path ++ " -E " ++ cRAWCPP_FLAGS + + -- For all systems, copy and remove are provided by the host -- system; architecture-specific stuff is done when building Config.hs ; let cp_path = cGHC_CP @@ -252,6 +356,11 @@ initSysTools minusB_args ; let as_path = gcc_path ld_path = gcc_path +#ifdef ILX + -- ilx2il and ilasm are specified in Config.hs + ; let ilx2il_path = cILX2IL + ilasm_path = cILASM +#endif -- Initialise the global vars ; writeIORef v_Path_package_config pkgconfig_path @@ -267,18 +376,26 @@ initSysTools minusB_args ; writeIORef v_Pgm_m mangle_path ; writeIORef v_Pgm_s split_path ; writeIORef v_Pgm_a as_path +#ifdef ILX + ; writeIORef v_Pgm_I ilx2il_path + ; writeIORef v_Pgm_i ilasm_path +#endif ; writeIORef v_Pgm_l ld_path ; writeIORef v_Pgm_MkDLL mkdll_path ; writeIORef v_Pgm_T touch_path ; writeIORef v_Pgm_CP cp_path - ; return top_dir + ; return () } + +#if defined(mingw32_TARGET_OS) +foreign import stdcall "GetTempPathA" getTempPath :: Int -> CString -> IO Int32 +#endif \end{code} setPgm is called when a command-line option like -pgmLld -is used to override a particular program with a new onw +is used to override a particular program with a new one \begin{code} setPgm :: String -> IO () @@ -291,6 +408,10 @@ setPgm ('m' : pgm) = writeIORef v_Pgm_m pgm setPgm ('s' : pgm) = writeIORef v_Pgm_s pgm setPgm ('a' : pgm) = writeIORef v_Pgm_a pgm setPgm ('l' : pgm) = writeIORef v_Pgm_l pgm +#ifdef ILX +setPgm ('I' : pgm) = writeIORef v_Pgm_I pgm +setPgm ('i' : pgm) = writeIORef v_Pgm_i pgm +#endif setPgm pgm = unknownFlagErr ("-pgm" ++ pgm) \end{code} @@ -304,7 +425,7 @@ setPgm pgm = unknownFlagErr ("-pgm" ++ pgm) -- 1. Set proto_top_dir -- a) look for (the last) -B flag, and use it -- b) if there are no -B flags, get the directory --- where GHC is running +-- where GHC is running (only on Windows) -- -- 2. If package.conf exists in proto_top_dir, we are running -- installed; and TopDir = proto_top_dir @@ -315,26 +436,22 @@ setPgm pgm = unknownFlagErr ("-pgm" ++ pgm) -- -- This is very gruesome indeed -getTopDir :: [String] +findTopDir :: [String] -> IO (Bool, -- True <=> am installed, False <=> in-place - String) -- TopDir + String) -- TopDir (in Unix format '/' separated) -getTopDir minusbs - = do { top_dir1 <- get_proto - ; let top_dir2 = unDosifyPath top_dir1 -- Convert to standard internal form - - -- Discover whether we're running in a build tree or in an installation, +findTopDir minusbs + = do { top_dir <- get_proto + -- Discover whether we're running in a build tree or in an installation, -- by looking for the package configuration file. - ; am_installed <- doesFileExist (top_dir2 `slash` "package.conf") + ; am_installed <- doesFileExist (top_dir `slash` "package.conf") - ; if am_installed then - return (True, top_dir2) - else - return (False, remove_suffix top_dir2) + ; return (am_installed, top_dir) } where - get_proto | not (null minusbs) - = return (drop 2 (last minusbs)) -- 2 for "-B" + -- get_proto returns a Unix-format path (relying on getExecDir to do so too) + get_proto | not (null minusbs) + = return (unDosifyPath (drop 2 (last minusbs))) -- 2 for "-B" | otherwise = do { maybe_exec_dir <- getExecDir -- Get directory of executable ; case maybe_exec_dir of -- (only works on Windows; @@ -342,17 +459,42 @@ getTopDir minusbs Nothing -> throwDyn (InstallationError "missing -B option") Just dir -> return dir } +\end{code} + + +%************************************************************************ +%* * +\subsection{Command-line options} +n%* * +%************************************************************************ + +When invoking external tools as part of the compilation pipeline, we +pass these a sequence of options on the command-line. Rather than +just using a list of Strings, we use a type that allows us to distinguish +between filepaths and 'other stuff'. [The reason being, of course, that +this type gives us a handle on transforming filenames, and filenames only, +to whatever format they're expected to be on a particular platform.] + +\begin{code} +data Option + = FileOption -- an entry that _contains_ filename(s) / filepaths. + String -- a non-filepath prefix that shouldn't be transformed (e.g., "/out=" + String -- the filepath/filename portion + | Option String + +showOptions :: [Option] -> String +showOptions ls = unwords (map (quote.showOpt) ls) + where + showOpt (FileOption pre f) = pre ++ dosifyPath f + showOpt (Option s) = s + +#if defined(mingw32_TARGET_OS) + quote "" = "" + quote s = "\"" ++ s ++ "\"" +#else + quote = id +#endif - remove_suffix dir -- "/...stuff.../ghc/compiler" --> "/...stuff..." - = ASSERT2( not (null p1) && - not (null p2) && - dir == top_dir ++ "/ghc/compiler", - text dir ) - top_dir - where - p1 = dropWhile (not . isSlash) (reverse dir) - p2 = dropWhile (not . isSlash) (tail p1) -- head is '/' - top_dir = reverse (tail p2) -- head is '/' \end{code} @@ -364,45 +506,62 @@ n%* * \begin{code} -runUnlit :: [String] -> IO () +runUnlit :: [Option] -> IO () runUnlit args = do p <- readIORef v_Pgm_L runSomething "Literate pre-processor" p args -runCpp :: [String] -> IO () +runCpp :: [Option] -> IO () runCpp args = do p <- readIORef v_Pgm_P runSomething "C pre-processor" p args -runCc :: [String] -> IO () +runCc :: [Option] -> IO () runCc args = do p <- readIORef v_Pgm_c runSomething "C Compiler" p args -runMangle :: [String] -> IO () +runMangle :: [Option] -> IO () runMangle args = do p <- readIORef v_Pgm_m runSomething "Mangler" p args -runSplit :: [String] -> IO () +runSplit :: [Option] -> IO () runSplit args = do p <- readIORef v_Pgm_s runSomething "Splitter" p args -runAs :: [String] -> IO () +runAs :: [Option] -> IO () runAs args = do p <- readIORef v_Pgm_a runSomething "Assembler" p args -runLink :: [String] -> IO () +runLink :: [Option] -> IO () runLink args = do p <- readIORef v_Pgm_l runSomething "Linker" p args -runMkDLL :: [String] -> IO () +#ifdef ILX +runIlx2il :: [Option] -> IO () +runIlx2il args = do p <- readIORef v_Pgm_I + runSomething "Ilx2Il" p args + +runIlasm :: [Option] -> IO () +runIlasm args = do p <- readIORef v_Pgm_i + runSomething "Ilasm" p args +#endif + +runMkDLL :: [Option] -> IO () runMkDLL args = do p <- readIORef v_Pgm_MkDLL runSomething "Make DLL" p args touch :: String -> String -> IO () touch purpose arg = do p <- readIORef v_Pgm_T - runSomething purpose p [arg] + runSomething purpose p [FileOption "" arg] copy :: String -> String -> String -> IO () -copy purpose from to = do p <- readIORef v_Pgm_CP - runSomething purpose p [from,to] +copy purpose from to = do + verb <- dynFlag verbosity + when (verb >= 2) $ hPutStrLn stderr ("*** " ++ purpose) + + h <- openFile to WriteMode + ls <- readFile from -- inefficient, but it'll do for now. + -- ToDo: speed up via slurping. + hPutStr h ls + hClose h \end{code} \begin{code} @@ -428,8 +587,6 @@ showGhcUsage = do { usage_path <- readIORef v_Path_usage dump "" = return () dump ('$':'$':s) = hPutStr stderr progName >> dump s dump (c:s) = hPutChar stderr c >> dump s - -packageConfigPath = readIORef v_Path_package_config \end{code} @@ -484,9 +641,11 @@ removeTmpFiles verb fs ("Deleting: " ++ unwords fs) (mapM_ rm fs) where - rm f = removeFile f `catchAllIO` - (\exn -> hPutStrLn stderr ("Warning: deleting non-existent " ++ f) >> - return ()) + rm f = removeFile f `catchAllIO` + (\_ignored -> + when (verb >= 2) $ + hPutStrLn stderr ("Warning: deleting non-existent " ++ f) + ) \end{code} @@ -509,19 +668,31 @@ setDryRun = writeIORef v_Dry_run True runSomething :: String -- For -v message -> String -- Command name (possibly a full path) -- assumed already dos-ified - -> [String] -- Arguments - -- runSomthing will dos-ify them + -> [Option] -- Arguments + -- runSomething will dos-ify them -> IO () runSomething phase_name pgm args = traceCmd phase_name cmd_line $ - do { exit_code <- system cmd_line + do { +#ifndef mingw32_TARGET_OS + exit_code <- system cmd_line +#else + exit_code <- rawSystem cmd_line +#endif ; if exit_code /= ExitSuccess then throwDyn (PhaseFailed phase_name exit_code) else return () } where - cmd_line = unwords (dosifyPaths (pgm : args)) + cmd_line = pgm ++ ' ':showOptions args -- unwords (pgm : dosifyPaths (map quote args)) + -- The pgm is already in native format (appropriate dir separators) +#if defined(mingw32_TARGET_OS) + quote "" = "" + quote s = "\"" ++ s ++ "\"" +#else + quote = id +#endif traceCmd :: String -> String -> IO () -> IO () -- a) trace the command (at two levels of verbosity) @@ -565,22 +736,30 @@ interpreted a command line 'foo\baz' as 'foobaz'. ----------------------------------------------------------------------------- -- Convert filepath into MSDOS form. -dosifyPath :: String -> String dosifyPaths :: [String] -> [String] --- dosifyPath does two things +-- dosifyPaths does two things -- a) change '/' to '\' -- b) remove initial '/cygdrive/' unDosifyPath :: String -> String -- Just change '\' to '/' +pgmPath :: String -- Directory string in Unix format + -> String -- Program name with no directory separators + -- (e.g. copy /y) + -> String -- Program invocation string in native format + + + #if defined(mingw32_TARGET_OS) --------------------- Windows version ------------------ -unDosifyPath xs = xs - dosifyPaths xs = map dosifyPath xs +unDosifyPath xs = subst '\\' '/' xs + +pgmPath dir pgm = dosifyPath dir ++ '\\' : pgm + dosifyPath stuff = subst '/' '\\' real_stuff where @@ -595,9 +774,10 @@ dosifyPath stuff #else --------------------- Unix version --------------------- -dosifyPath p = p -dosifyPaths ps = ps -unDosifyPath xs = subst '\\' '/' xs +dosifyPaths ps = ps +unDosifyPath xs = xs +pgmPath dir pgm = dir ++ '/' : pgm +dosifyPath stuff = stuff -------------------------------------------------------- #endif @@ -612,9 +792,6 @@ subst a b ls = map (\ x -> if x == a then b else x) ls slash :: String -> String -> String absPath, relPath :: [String] -> String -isSlash '/' = True -isSlash other = False - relPath [] = "" relPath xs = foldr1 slash xs @@ -632,36 +809,45 @@ slash s1 s2 = s1 ++ ('/' : s2) \begin{code} ----------------------------------------------------------------------------- --- Define myGetProcessId :: IO Int --- getExecDir :: IO (Maybe String) +-- Define getExecDir :: IO (Maybe String) -#ifdef mingw32_TARGET_OS -foreign import "_getpid" getProcessID :: IO Int -- relies on Int == Int32 on Windows - -#if __GLASGOW_HASKELL__ >= 500 -foreign import stdcall "GetCurrentDirectoryA" getCurrentDirectory :: Int32 -> CString -> IO Int32 +#if defined(mingw32_TARGET_OS) getExecDir :: IO (Maybe String) -getExecDir = do len <- getCurrentDirectory 0 nullAddr - buf <- mallocArray (fromIntegral len) - ret <- getCurrentDirectory len buf - if ret == 0 then return Nothing +getExecDir = do let len = (2048::Int) -- plenty, PATH_MAX is 512 under Win32. + buf <- mallocArray len + ret <- getModuleFileName nullAddr buf len + if ret == 0 then destructArray len buf >> return Nothing else do s <- peekCString buf - destructArray (fromIntegral len) buf - return (Just s) + destructArray len buf + return (Just (reverse (drop (length "/bin/ghc.exe") (reverse (unDosifyPath s))))) + + +foreign import stdcall "GetModuleFileNameA" getModuleFileName :: Addr -> CString -> Int -> IO Int32 #else -foreign import stdcall "GetCurrentDirectoryA" getCurrentDirectory :: Int32 -> Addr -> IO Int32 -getExecDir :: IO (Maybe String) -getExecDir = do len <- getCurrentDirectory 0 nullAddr - buf <- malloc (fromIntegral len) - ret <- getCurrentDirectory len buf - if ret == 0 then return Nothing - else do s <- unpackCStringIO buf - free buf - return (Just s) +getExecDir :: IO (Maybe String) = do return Nothing #endif + +#ifdef mingw32_TARGET_OS +foreign import "_getpid" getProcessID :: IO Int -- relies on Int == Int32 on Windows #else getProcessID :: IO Int getProcessID = Posix.getProcessID -getExecDir :: IO (Maybe String) = do return Nothing #endif + +rawSystem :: String -> IO ExitCode +#if __GLASGOW_HASKELL__ > 408 +rawSystem "" = ioException (IOError Nothing InvalidArgument "rawSystem" "null command" Nothing) +rawSystem cmd = + withCString cmd $ \s -> do + status <- throwErrnoIfMinus1 "rawSystem" (primRawSystem s) + case status of + 0 -> return ExitSuccess + n -> return (ExitFailure n) + +foreign import ccall "rawSystemCmd" unsafe primRawSystem :: CString -> IO Int +#else +rawSystem = System.system +#endif + + \end{code}