-----------------------------------------------------------------------------
--- 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
--
-----------------------------------------------------------------------------
-- 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 ()
+ runPp, -- [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,
-- 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
import Config
import Outputable
import Panic ( progName, GhcException(..) )
-import Util ( global )
+import Util ( global, dropList )
import CmdLineOpts ( dynFlag, verbosity )
-import Exception ( throwDyn, catchAllIO )
+import Exception ( throwDyn )
+#if __GLASGOW_HASKELL__ > 408
+import qualified Exception ( catch )
+#else
+import Exception ( catchAllIO )
+#endif
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
import Int
+import Addr
+
+#include "../includes/config.h"
-#if __GLASGOW_HASKELL__ < 500
-import Storable
+#ifndef mingw32_TARGET_OS
+import qualified Posix
#else
+import List ( isPrefixOf )
import MarshalArray
#endif
-#include "../includes/config.h"
-
-#if !defined(mingw32_TARGET_OS)
-import qualified Posix
+-- 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
+#if __GLASGOW_HASKELL__ >= 503
+import GHC.IOBase
#else
-import Addr
-import List ( isPrefixOf )
+import PrelIOBase -- this can be removed when SystemExts is used
+#endif
+import CError ( throwErrnoIfMinus1 ) -- as can this
+-- import SystemExts ( rawSystem )
+#else
+import System ( system )
#endif
-import List ( isSuffixOf )
#include "HsVersions.h"
-{-# DEPRECATED runSomething "runSomething should be private to SysTools" #-}
+-- Make catch work on older GHCs
+#if __GLASGOW_HASKELL__ > 408
+myCatch = Exception.catch
+#else
+myCatch = catchAllIO
+#endif
\end{code}
etc They do *not* include paths
- cUNLIT_DIR The *path* to the directory containing unlit, split etc
- cSPLIT_DIR *relative* to the root of the build tree,
- for use when running *in-place* in a build tree (only)
+ cUNLIT_DIR_REL The *path* to the directory containing unlit, split etc
+ cSPLIT_DIR_REL *relative* to the root of the build tree,
+ for use when running *in-place* in a build tree (only)
+---------------------------------------------
+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}
\begin{code}
GLOBAL_VAR(v_Pgm_L, error "pgm_L", String) -- unlit
GLOBAL_VAR(v_Pgm_P, error "pgm_P", String) -- cpp
+GLOBAL_VAR(v_Pgm_F, error "pgm_F", String) -- pp
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
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<dir>
+
-- 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}
\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 = pgmPath (top_dir `slash` "bin") 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
+ inplace dir pgm = pgmPath (top_dir `slash`
+ cPROJECT_DIR `slash` dir) pgm
; let pkgconfig_path
| am_installed = installed "package.conf"
- | otherwise = inplace cGHC_DRIVER_DIR "package.conf.inplace"
+ | otherwise = inplace cGHC_DRIVER_DIR_REL "package.conf.inplace"
ghc_usage_msg_path
| am_installed = installed "ghc-usage.txt"
- | otherwise = inplace cGHC_DRIVER_DIR "ghc-usage.txt"
+ | otherwise = inplace cGHC_DRIVER_DIR_REL "ghc-usage.txt"
-- For all systems, unlit, split, mangle are GHC utilities
-- architecture-specific stuff is done when building Config.hs
unlit_path
- | am_installed = installed_bin cGHC_UNLIT
- | otherwise = inplace cGHC_UNLIT_DIR cGHC_UNLIT
+ | am_installed = installed_bin cGHC_UNLIT_PGM
+ | otherwise = inplace cGHC_UNLIT_DIR_REL cGHC_UNLIT_PGM
-- split and mangle are Perl scripts
split_script
- | am_installed = installed_bin cGHC_SPLIT
- | otherwise = inplace cGHC_SPLIT_DIR cGHC_SPLIT
+ | am_installed = installed_bin cGHC_SPLIT_PGM
+ | otherwise = inplace cGHC_SPLIT_DIR_REL cGHC_SPLIT_PGM
mangle_script
- | am_installed = installed_bin cGHC_MANGLER
- | otherwise = inplace cGHC_MANGLER_DIR cGHC_MANGLER
+ | am_installed = installed_bin cGHC_MANGLER_PGM
+ | otherwise = inplace cGHC_MANGLER_DIR_REL cGHC_MANGLER_PGM
+
+#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
-- 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
- | otherwise = inplace cGHC_TOUCHY_DIR cGHC_TOUCHY
+ ; let touch_path | am_installed = installed_bin cGHC_TOUCHY_PGM
+ | otherwise = inplace cGHC_TOUCHY_DIR_REL cGHC_TOUCHY_PGM
-- 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
-- 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
- touch_path = cGHC_TOUCHY
+ ; let gcc_path = cGCC
+ touch_path = "touch"
mkdll_path = panic "Can't build DLLs on a non-Win32 system"
-- On Unix, scripts are invoked using the '#!' method. Binary
mangle_path = mangle_script
#endif
+ -- 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
; 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
; writeIORef v_Pgm_L unlit_path
; writeIORef v_Pgm_P cpp_path
+ ; writeIORef v_Pgm_F ""
; writeIORef v_Pgm_c gcc_path
; 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 ()
-- So the first character says which program to override
setPgm ('P' : pgm) = writeIORef v_Pgm_P pgm
+setPgm ('F' : pgm) = writeIORef v_Pgm_F pgm
setPgm ('c' : pgm) = writeIORef v_Pgm_c pgm
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}
--
-- This is very gruesome indeed
-getTopDir :: [String]
+findTopDir :: [String]
-> IO (Bool, -- True <=> am installed, False <=> in-place
String) -- TopDir (in Unix format '/' separated)
-getTopDir minusbs
+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.
; return (am_installed, top_dir)
}
where
- -- get_proto returns a Unix-format path
+ -- 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
; case maybe_exec_dir of -- (only works on Windows;
-- returns Nothing on Unix)
Nothing -> throwDyn (InstallationError "missing -B<dir> option")
- Just dir -> return (remove_suffix (unDosifyPath dir))
+ 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
- -- In an installed tree, the ghc binary lives in $libexecdir, which
- -- is normally $libdir/bin. So we strip off a /bin suffix here.
- -- In a build tree, the ghc binary lives in $fptools/ghc/compiler,
- -- so we strip off the /ghc/compiler suffix here too, leaving a
- -- standard TOPDIR.
- remove_suffix ghc_bin_dir -- ghc_bin_dir is in standard Unix format
- | "/ghc/compiler" `isSuffixOf` ghc_bin_dir = back_two
- | "/bin" `isSuffixOf` ghc_bin_dir = back_one
- | otherwise = ghc_bin_dir
- where
- p1 = dropWhile (not . isSlash) (reverse ghc_bin_dir)
- p2 = dropWhile (not . isSlash) (tail p1) -- head is '/'
- back_two = reverse (tail p2) -- head is '/'
- back_one = reverse (tail p1)
\end{code}
%************************************************************************
%* *
\subsection{Running an external program}
-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 ()
+runPp :: [Option] -> IO ()
+runPp args = do p <- readIORef v_Pgm_F
+ runSomething "Haskell pre-processor" p args
+
+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
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}
("Deleting: " ++ unwords fs)
(mapM_ rm fs)
where
- rm f = removeFile f `catchAllIO`
+ rm f = removeFile f `myCatch`
(\_ignored ->
when (verb >= 2) $
hPutStrLn stderr ("Warning: deleting non-existent " ++ f)
runSomething :: String -- For -v message
-> String -- Command name (possibly a full path)
-- assumed already dos-ified
- -> [String] -- Arguments
+ -> [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 (pgm : dosifyPaths 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)
; unless n $ do {
-- And run it!
- ; action `catchAllIO` handle_exn verb
+ ; action `myCatch` handle_exn verb
}}
where
handle_exn verb exn = do { when (verb >= 2) (hPutStr stderr "\n")
#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
cygdrive_prefix = "/cygdrive/"
real_stuff
- | cygdrive_prefix `isPrefixOf` stuff = drop (length cygdrive_prefix) stuff
+ | cygdrive_prefix `isPrefixOf` stuff = dropList cygdrive_prefix stuff
| otherwise = stuff
#else
--------------------- Unix version ---------------------
-dosifyPaths ps = ps
-unDosifyPath xs = subst '\\' '/' xs
-pgmPath dir pgm = dir ++ '/' : pgm
+dosifyPaths ps = ps
+unDosifyPath xs = xs
+pgmPath dir pgm = dir ++ '/' : pgm
+dosifyPath stuff = stuff
--------------------------------------------------------
#endif
slash :: String -> String -> String
absPath, relPath :: [String] -> String
-isSlash '/' = True
-isSlash other = False
-
relPath [] = ""
relPath xs = foldr1 slash xs
\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
-foreign import stdcall "GetCurrentDirectoryA" getCurrentDirectoryLen :: Int32 -> Addr -> IO Int32
+#if defined(mingw32_TARGET_OS)
getExecDir :: IO (Maybe String)
-getExecDir = do len <- getCurrentDirectoryLen 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 (dropList "/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}
projects / ghc-hetmet.git / blobdiff