-----------------------------------------------------------------------------
--- 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
--
-----------------------------------------------------------------------------
module SysTools (
-- Initialisation
initSysTools,
- setPgm, -- String -> IO ()
+
+ setPgmL, -- String -> IO ()
+ setPgmP,
+ setPgmF,
+ setPgmc,
+ setPgmm,
+ setPgms,
+ setPgma,
+ setPgml,
+#ifdef ILX
+ setPgmI,
+ setPgmi,
+#endif
-- 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 ()
+ normalisePath, -- FilePath -> FilePath
-- 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
+#include "HsVersions.h"
+
import DriverUtil
import Config
import Outputable
import Panic ( progName, GhcException(..) )
-import Util ( global )
+import Util ( global, notNull )
import CmdLineOpts ( dynFlag, verbosity )
-import Exception ( throwDyn, catchAllIO )
-import IO ( hPutStr, hPutChar, hPutStrLn, hFlush, stderr )
-import Directory ( doesFileExist, removeFile )
-import IOExts ( IORef, readIORef, writeIORef )
+import EXCEPTION ( throwDyn )
+import DATA_IOREF ( IORef, readIORef, writeIORef )
+import DATA_INT
+
import Monad ( when, unless )
-import System ( system, ExitCode(..), exitWith )
-import CString
-import Addr
-import Int
+import System ( ExitCode(..), exitWith, getEnv, system )
+import IO ( try, catch,
+ openFile, hPutChar, hPutStrLn, hPutStr, hClose, hFlush, IOMode(..),
+ stderr )
+import Directory ( doesFileExist, removeFile )
+import List ( intersperse, partition )
+#include "../includes/config.h"
+
+-- GHC <= 4.08 didn't have rawSystem, and runs into problems with long command
+-- lines on mingw32, so we disallow it now.
#if __GLASGOW_HASKELL__ < 500
-import Storable
-#else
-import MarshalArray
+#error GHC >= 5.00 is required for bootstrapping GHC
#endif
-#include "../includes/config.h"
-
-#if !defined(mingw32_TARGET_OS)
-import qualified Posix
+#ifndef mingw32_HOST_OS
+#if __GLASGOW_HASKELL__ > 504
+import qualified System.Posix.Internals
#else
-import Addr ( nullAddr )
+import qualified Posix
+#endif
+#else /* Must be Win32 */
import List ( isPrefixOf )
+import Util ( dropList )
+import Foreign
+import CString ( CString, peekCString )
#endif
-#include "HsVersions.h"
-
-{-# DEPRECATED runSomething "runSomething should be private to SysTools" #-}
-
+#if __GLASGOW_HASKELL__ < 601
+import Foreign ( withMany, withArray0, nullPtr, Ptr )
+import CForeign ( CString, withCString, throwErrnoIfMinus1 )
+#else
+import System.Cmd ( rawSystem )
+#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_P, error "pgm_P", (String,[Option])) -- 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_HOST_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.
+ ; IO.try (do
+ let len = (2048::Int)
+ buf <- mallocArray len
+ ret <- getTempPath len buf
+ tdir <-
+ if ret == 0 then do
+ -- failed, consult TMPDIR.
+ free buf
+ getEnv "TMPDIR"
+ else do
+ s <- peekCString buf
+ free buf
+ return s
+ setTmpDir tdir)
+#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)
+#if defined(mingw32_HOST_OS)
-- WINDOWS-SPECIFIC STUFF
-- On Windows, gcc and friends are distributed with GHC,
-- 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 mkdll_path = cMKDLL
+ ; let split_path = perl_path ++ " \"" ++ split_script ++ "\""
+ mangle_path = perl_path ++ " \"" ++ mangle_script ++ "\""
+
+ ; let mkdll_path
+ | am_installed = pgmPath (installed "gcc-lib/") cMKDLL ++
+ " --dlltool-name " ++ pgmPath (installed "gcc-lib/") "dlltool" ++
+ " --driver-name " ++ gcc_path
+ | otherwise = cMKDLL
#else
-- UNIX-SPECIFIC STUFF
-- 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
-- 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
+ -- HACK, see setPgmP below. We keep 'words' here to remember to fix
+ -- Config.hs one day.
+ ; let cpp_path = (gcc_path, (Option "-E"):(map Option (words 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_HOST_OS)
+foreign import stdcall "GetTempPathA" unsafe getTempPath :: Int -> CString -> IO Int32
+#endif
\end{code}
-setPgm is called when a command-line option like
+The various setPgm functions are 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 ()
--- The string is the flag, minus the '-pgm' prefix
--- So the first character says which program to override
-
-setPgm ('P' : pgm) = writeIORef v_Pgm_P 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
-setPgm pgm = unknownFlagErr ("-pgm" ++ pgm)
+setPgmL = writeIORef v_Pgm_L
+-- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
+-- Config.hs should really use Option.
+setPgmP arg = let (pgm:args) = words arg in writeIORef v_Pgm_P (pgm,map Option args)
+setPgmF = writeIORef v_Pgm_F
+setPgmc = writeIORef v_Pgm_c
+setPgmm = writeIORef v_Pgm_m
+setPgms = writeIORef v_Pgm_s
+setPgma = writeIORef v_Pgm_a
+setPgml = writeIORef v_Pgm_l
+#ifdef ILX
+setPgmI = writeIORef v_Pgm_I
+setPgmi = writeIORef v_Pgm_i
+#endif
\end{code}
-- 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
--
-- 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
- = 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 getBaseDir to do so too)
+ get_proto | notNull minusbs
+ = return (normalisePath (drop 2 (last minusbs))) -- 2 for "-B"
| otherwise
- = do { maybe_exec_dir <- getExecDir -- Get directory of executable
+ = do { maybe_exec_dir <- getBaseDir -- Get directory of executable
; case maybe_exec_dir of -- (only works on Windows;
-- returns Nothing on Unix)
Nothing -> throwDyn (InstallationError "missing -B<dir> 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
+
+showOpt (FileOption pre f) = pre ++ platformPath f
+showOpt (Option "") = ""
+showOpt (Option s) = s
- 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}
%************************************************************************
%* *
\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 args = do p <- readIORef v_Pgm_P
- runSomething "C pre-processor" p args
+runCpp :: [Option] -> IO ()
+runCpp args = do (p,baseArgs) <- readIORef v_Pgm_P
+ runSomething "C pre-processor" p (baseArgs ++ args)
+
+runPp :: [Option] -> IO ()
+runPp args = do p <- readIORef v_Pgm_F
+ runSomething "Haskell 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}
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}
\end{code}
\begin{code}
-setTmpDir dir = writeIORef v_TmpDir dir
+setTmpDir dir = writeIORef v_TmpDir (canonicalise dir)
+ where
+#if !defined(mingw32_HOST_OS)
+ canonicalise p = normalisePath p
+#else
+ -- Canonicalisation of temp path under win32 is a bit more
+ -- involved: (a) strip trailing slash,
+ -- (b) normalise slashes
+ -- (c) just in case, if there is a prefix /cygdrive/x/, change to x:
+ --
+ canonicalise path = normalisePath (xltCygdrive (removeTrailingSlash path))
+
+ -- if we're operating under cygwin, and TMP/TEMP is of
+ -- the form "/cygdrive/drive/path", translate this to
+ -- "drive:/path" (as GHC isn't a cygwin app and doesn't
+ -- understand /cygdrive paths.)
+ xltCygdrive path
+ | "/cygdrive/" `isPrefixOf` path =
+ case drop (length "/cygdrive/") path of
+ drive:xs@('/':_) -> drive:':':xs
+ _ -> path
+ | otherwise = path
+
+ -- strip the trailing backslash (awful, but we only do this once).
+ removeTrailingSlash path =
+ case last path of
+ '/' -> init path
+ '\\' -> init path
+ _ -> path
+#endif
cleanTempFiles :: Int -> IO ()
-cleanTempFiles verb = do fs <- readIORef v_FilesToClean
- removeTmpFiles verb fs
+cleanTempFiles verb
+ = do fs <- readIORef v_FilesToClean
+ removeTmpFiles verb fs
+ writeIORef v_FilesToClean []
cleanTempFilesExcept :: Int -> [FilePath] -> IO ()
cleanTempFilesExcept verb dont_delete
- = do fs <- readIORef v_FilesToClean
- let leftovers = filter (`notElem` dont_delete) fs
- removeTmpFiles verb leftovers
- writeIORef v_FilesToClean dont_delete
+ = do files <- readIORef v_FilesToClean
+ let (to_keep, to_delete) = partition (`elem` dont_delete) files
+ removeTmpFiles verb to_delete
+ writeIORef v_FilesToClean to_keep
-- find a temporary name that doesn't already exist.
("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 `IO.catch`
+ (\_ignored ->
+ when (verb >= 2) $
+ hPutStrLn stderr ("Warning: deleting non-existent " ++ f)
+ )
\end{code}
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
- ; if exit_code /= ExitSuccess
- then throwDyn (PhaseFailed phase_name exit_code)
- else return ()
- }
- where
- cmd_line = unwords (pgm : dosifyPaths args)
- -- The pgm is already in native format
+runSomething phase_name pgm args = do
+ let real_args = filter notNull (map showOpt args)
+ traceCmd phase_name (concat (intersperse " " (pgm:real_args))) $ do
+ exit_code <- rawSystem pgm real_args
+ if (exit_code /= ExitSuccess)
+ then throwDyn (PhaseFailed phase_name exit_code)
+ else return ()
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 `IO.catch` handle_exn verb
}}
where
handle_exn verb exn = do { when (verb >= 2) (hPutStr stderr "\n")
- ; when (verb >= 3) (hPutStrLn stderr ("Failed: " ++ cmd_line))
+ ; when (verb >= 3) (hPutStrLn stderr ("Failed: " ++ cmd_line ++ (show exn)))
; throwDyn (PhaseFailed phase_name (ExitFailure 1)) }
+
+-- -----------------------------------------------------------------------------
+-- rawSystem: run an external command
+
+#if __GLASGOW_HASKELL__ < 601
+
+-- This code is copied from System.Cmd on GHC 6.1.
+
+rawSystem :: FilePath -> [String] -> IO ExitCode
+
+#ifndef mingw32_TARGET_OS
+
+rawSystem cmd args =
+ withCString cmd $ \pcmd ->
+ withMany withCString (cmd:args) $ \cstrs ->
+ withArray0 nullPtr cstrs $ \arr -> do
+ status <- throwErrnoIfMinus1 "rawSystem" (c_rawSystem pcmd arr)
+ case status of
+ 0 -> return ExitSuccess
+ n -> return (ExitFailure n)
+
+foreign import ccall "rawSystem" unsafe
+ c_rawSystem :: CString -> Ptr CString -> IO Int
+
+#else
+
+-- On Windows, the command line is passed to the operating system as
+-- a single string. Command-line parsing is done by the executable
+-- itself.
+rawSystem cmd args = do
+ let cmdline = {-translate-} cmd ++ concat (map ((' ':) . translate) args)
+ -- Urk, don't quote/escape the command name on Windows, because the
+ -- compiler is exceedingly naughty and sometimes uses 'perl "..."'
+ -- as the command name.
+ withCString cmdline $ \pcmdline -> do
+ status <- throwErrnoIfMinus1 "rawSystem" (c_rawSystem pcmdline)
+ case status of
+ 0 -> return ExitSuccess
+ n -> return (ExitFailure n)
+
+translate :: String -> String
+translate str = '"' : foldr escape "\"" str
+ where escape '"' str = '\\' : '"' : str
+ escape '\\' str = '\\' : '\\' : str
+ escape c str = c : str
+
+foreign import ccall "rawSystem" unsafe
+ c_rawSystem :: CString -> IO Int
+
+#endif
+#endif
\end{code}
to the Windows command.
The alternative, of using '/' consistently on Unix and '\' on Windows,
-proved quite awkward. There were a lot more calls to dosifyPath,
+proved quite awkward. There were a lot more calls to platformPath,
and even on Windows we might invoke a unix-like utility (eg 'sh'), which
interpreted a command line 'foo\baz' as 'foobaz'.
\begin{code}
-----------------------------------------------------------------------------
--- Convert filepath into MSDOS form.
+-- Convert filepath into platform / MSDOS form.
-dosifyPaths :: [String] -> [String]
--- dosifyPaths does two things
+-- platformPath does two things
-- a) change '/' to '\'
-- b) remove initial '/cygdrive/'
-unDosifyPath :: String -> String
+normalisePath :: String -> String
-- Just change '\' to '/'
pgmPath :: String -- Directory string in Unix format
-#if defined(mingw32_TARGET_OS)
-
+#if defined(mingw32_HOST_OS)
--------------------- Windows version ------------------
-unDosifyPath xs = xs
-
-dosifyPaths xs = map dosifyPath xs
-
-pgmPath dir pgm = dosifyPath dir ++ '\\' : pgm
-
-dosifyPath stuff
- = subst '/' '\\' real_stuff
- where
- -- fully convince myself that /cygdrive/ prefixes cannot
- -- really appear here.
- cygdrive_prefix = "/cygdrive/"
+normalisePath xs = subst '\\' '/' xs
+platformPath p = subst '/' '\\' p
+pgmPath dir pgm = platformPath dir ++ '\\' : pgm
- real_stuff
- | cygdrive_prefix `isPrefixOf` stuff = drop (length cygdrive_prefix) stuff
- | otherwise = stuff
-
+subst a b ls = map (\ x -> if x == a then b else x) ls
#else
-
---------------------- Unix version ---------------------
-dosifyPaths ps = ps
-unDosifyPath xs = subst '\\' '/' xs
-pgmPath dir pgm = dir ++ '/' : pgm
+--------------------- Non-Windows version --------------
+normalisePath xs = xs
+pgmPath dir pgm = dir ++ '/' : pgm
+platformPath stuff = stuff
--------------------------------------------------------
#endif
-subst a b ls = map (\ x -> if x == a then b else x) ls
\end{code}
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)
-
-#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
-getExecDir :: IO (Maybe String)
-getExecDir = do len <- getCurrentDirectoryLen 0 nullAddr
- buf <- mallocArray (fromIntegral len)
- ret <- getCurrentDirectory len buf
- if ret == 0 then return Nothing
+-- Define getBaseDir :: IO (Maybe String)
+
+#if defined(mingw32_HOST_OS)
+getBaseDir :: IO (Maybe String)
+-- Assuming we are running ghc, accessed by path $()/bin/ghc.exe,
+-- return the path $(stuff). Note that we drop the "bin/" directory too.
+getBaseDir = do let len = (2048::Int) -- plenty, PATH_MAX is 512 under Win32.
+ buf <- mallocArray len
+ ret <- getModuleFileName nullPtr buf len
+ if ret == 0 then free buf >> return Nothing
else do s <- peekCString buf
- destructArray (fromIntegral len) buf
- return (Just s)
-#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)
+ return (Just (rootDir s))
+ where
+ rootDir s = reverse (dropList "/bin/ghc.exe" (reverse (normalisePath s)))
+
+foreign import stdcall "GetModuleFileNameA" unsafe
+ getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
+#else
+getBaseDir :: IO (Maybe String) = do return Nothing
#endif
+
+#ifdef mingw32_HOST_OS
+foreign import ccall "_getpid" unsafe getProcessID :: IO Int -- relies on Int == Int32 on Windows
+#elif __GLASGOW_HASKELL__ > 504
+getProcessID :: IO Int
+getProcessID = System.Posix.Internals.c_getpid >>= return . fromIntegral
#else
getProcessID :: IO Int
getProcessID = Posix.getProcessID
-getExecDir :: IO (Maybe String) = do return Nothing
#endif
+
\end{code}
projects / ghc-hetmet.git / blobdiff