[Note topdir]
GHC needs various support files (library packages, RTS etc), plus
-various auxiliary programs (cp, gcc, etc). It starts by finding topdir:
-
- for "installed" topdir is the root of GHC's support files ($libdir)
- for "in-place" topdir is the root of the build tree
+various auxiliary programs (cp, gcc, etc). It starts by finding topdir,
+the root of GHC's support files
On Unix:
- ghc always has a shell wrapper that passes a -B<dir> option
- - in an installation, <dir> is $libdir
- - in a build tree, <dir> is $TOP/inplace-datadir
- - so we detect the build-tree case and add ".." to get us back to $TOP
On Windows:
- ghc never has a shell wrapper.
- we can find the location of the ghc binary, which is
- $topdir/bin/ghc.exe in an installation, or
- $topdir/ghc/stage1-inplace/ghc.exe in a build tree.
- - we detect which one of these we have, and calculate $topdir.
-
+ $topdir/bin/<something>.exe
+ where <something> may be "ghc", "ghc-stage2", or similar
+ - we strip off the "bin/<something>.exe" to leave $topdir.
-from topdir we can find package.conf, which contains the locations of
-almost everything else, whether we're in a build tree or installed.
+from topdir we can find package.conf, ghc-asm, etc.
SysTools.initSysProgs figures out exactly where all the auxiliary programs
etc They do *not* include paths
- cUNLIT_DIR_REL The *path* to the directory containing unlit, split etc
- cSPLIT_DIR_REL *relative* to the root of the build tree,
+ 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)
initSysTools mbMinusB dflags0
- = do { (am_installed, top_dir) <- findTopDir mbMinusB
+ = do { top_dir <- findTopDir mbMinusB
-- see [Note topdir]
-- NB: top_dir is assumed to be in standard Unix
-- format, '/' separated
- ; let installed, installed_bin :: FilePath -> FilePath
- installed_bin pgm = top_dir </> pgm
- installed file = top_dir </> file
- inplace dir pgm = top_dir </> dir </> pgm
-
- ; let pkgconfig_path
- | am_installed = installed "package.conf"
- | otherwise = inplace "inplace-datadir" "package.conf"
-
- ghc_usage_msg_path
- | am_installed = installed "ghc-usage.txt"
- | otherwise = inplace cGHC_DRIVER_DIR_REL "ghc-usage.txt"
+ ; let installed :: FilePath -> FilePath
+ installed file = top_dir </> file
+ installed_mingw_bin file = top_dir </> ".." </> "mingw" </> "bin" </> file
- ghci_usage_msg_path
- | am_installed = installed "ghci-usage.txt"
- | otherwise = inplace cGHC_DRIVER_DIR_REL "ghci-usage.txt"
+ ; let pkgconfig_path = installed "package.conf"
+ ghc_usage_msg_path = installed "ghc-usage.txt"
+ ghci_usage_msg_path = installed "ghci-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_PGM
- | otherwise = inplace cGHC_UNLIT_DIR_REL cGHC_UNLIT_PGM
+ unlit_path = installed cGHC_UNLIT_PGM
-- split and mangle are Perl scripts
- split_script
- | am_installed = installed_bin cGHC_SPLIT_PGM
- | otherwise = inplace cGHC_SPLIT_DIR_REL cGHC_SPLIT_PGM
+ split_script = installed cGHC_SPLIT_PGM
+ mangle_script = installed cGHC_MANGLER_PGM
- mangle_script
- | am_installed = installed_bin cGHC_MANGLER_PGM
- | otherwise = inplace cGHC_MANGLER_DIR_REL cGHC_MANGLER_PGM
-
- windres_path
- | am_installed = installed_bin "bin/windres"
- | otherwise = "windres"
+ windres_path = installed_mingw_bin "windres"
; tmpdir <- getTemporaryDirectory
; let dflags1 = setTmpDir tmpdir dflags0
ghcError (InstallationError
("Can't find package.conf as " ++ pkgconfig_path))
- -- On Windows, gcc and friends are distributed with GHC,
- -- so when "installed" we look in TopDir/bin
- -- When "in-place", or when not on Windows, we look wherever
- -- the build-time configure script found them
+ -- On Windows, mingw is distributed with GHC,
+ -- so we look in TopDir/../mingw/bin
; let
- -- 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_args are in NATIVE format,
- -- gcc can cope
- -- (see comments with declarations of global variables)
- gcc_b_arg = Option ("-B" ++ installed "gcc-lib/")
- gcc_mingw_include_arg = Option ("-I" ++ installed "include/mingw")
- (gcc_prog,gcc_args)
- | isWindowsHost && am_installed
- -- 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.
- = (installed_bin "gcc", [gcc_b_arg, gcc_mingw_include_arg])
- | otherwise = (cGCC, [])
+ gcc_prog
+ | isWindowsHost = installed_mingw_bin "gcc"
+ | otherwise = cGCC
perl_path
- | isWindowsHost && am_installed = installed_bin cGHC_PERL
- | otherwise = cGHC_PERL
+ | isWindowsHost = installed cGHC_PERL
+ | otherwise = cGHC_PERL
-- 'touch' is a GHC util for Windows
touch_path
- | isWindowsHost
- = if am_installed
- then installed_bin cGHC_TOUCHY_PGM
- else inplace cGHC_TOUCHY_DIR_REL cGHC_TOUCHY_PGM
- | otherwise = "touch"
+ | isWindowsHost = installed cGHC_TOUCHY_PGM
+ | otherwise = "touch"
-- 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.
-- On Unix, scripts are invoked using the '#!' method. Binary
(mkdll_prog, mkdll_args)
| not isWindowsHost
= panic "Can't build DLLs on a non-Win32 system"
- | am_installed =
- (installed "gcc-lib/" </> cMKDLL,
- [ Option "--dlltool-name",
- Option (installed "gcc-lib/" </> "dlltool"),
- Option "--driver-name",
- Option gcc_prog, gcc_b_arg, gcc_mingw_include_arg ])
- | otherwise = (cMKDLL, [])
+ | otherwise =
+ (installed_mingw_bin cMKDLL, [])
-- 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_prog, gcc_args ++
+ ; let cpp_path = (gcc_prog,
(Option "-E"):(map Option (words cRAWCPP_FLAGS)))
-- Other things being equal, as and ld are simply gcc
- ; let (as_prog,as_args) = (gcc_prog,gcc_args)
- (ld_prog,ld_args) = (gcc_prog,gcc_args)
+ ; let as_prog = gcc_prog
+ ld_prog = gcc_prog
; return dflags1{
ghcUsagePath = ghc_usage_msg_path,
pgm_L = unlit_path,
pgm_P = cpp_path,
pgm_F = "",
- pgm_c = (gcc_prog,gcc_args),
+ pgm_c = (gcc_prog,[]),
pgm_m = (mangle_prog,mangle_args),
pgm_s = (split_prog,split_args),
- pgm_a = (as_prog,as_args),
- pgm_l = (ld_prog,ld_args),
+ pgm_a = (as_prog,[]),
+ pgm_l = (ld_prog,[]),
pgm_dll = (mkdll_prog,mkdll_args),
pgm_T = touch_path,
pgm_sysman = top_dir ++ "/ghc/rts/parallel/SysMan",
\end{code}
\begin{code}
-findTopDir :: Maybe String -- Maybe TopDir path (without the '-B' prefix).
- -> IO (Bool, -- True <=> am installed, False <=> in-place
- String) -- TopDir (in Unix format '/' separated)
-
-findTopDir mbMinusB
- = do { top_dir <- get_proto
- ; exists1 <- doesFileExist (top_dir </> "package.conf")
- ; exists2 <- doesFileExist (top_dir </> "inplace")
- ; let amInplace = not exists1 -- On Windows, package.conf doesn't exist
- -- when we are inplace
- || exists2 -- On Linux, the presence of inplace signals
- -- that we are inplace
-
- ; let real_top = if exists2 then top_dir </> ".." else top_dir
-
- ; return (not amInplace, real_top)
- }
- where
- -- get_proto returns a Unix-format path (relying on getBaseDir to do so too)
- get_proto = case mbMinusB of
- Just minusb -> return (normalise minusb)
- Nothing
- -> do maybe_exec_dir <- getBaseDir -- Get directory of executable
- case maybe_exec_dir of -- (only works on Windows;
- -- returns Nothing on Unix)
- Nothing -> ghcError (InstallationError "missing -B<dir> option")
- Just dir -> return dir
+-- returns a Unix-format path (relying on getBaseDir to do so too)
+findTopDir :: Maybe String -- Maybe TopDir path (without the '-B' prefix).
+ -> IO String -- TopDir (in Unix format '/' separated)
+findTopDir (Just minusb) = return (normalise minusb)
+findTopDir Nothing
+ = do -- Get directory of executable
+ maybe_exec_dir <- getBaseDir
+ case maybe_exec_dir of
+ -- "Just" on Windows, "Nothing" on unix
+ Nothing -> ghcError (InstallationError "missing -B<dir> option")
+ Just dir -> return dir
\end{code}
runWindres :: DynFlags -> [Option] -> IO ()
runWindres dflags args = do
- let (gcc,gcc_args) = pgm_c dflags
+ let (_gcc,gcc_args) = pgm_c dflags
windres = pgm_windres dflags
mb_env <- getGccEnv gcc_args
- runSomethingFiltered dflags id "Windres" windres
- -- we must tell windres where to find gcc: it might not be on PATH
- (Option ("--preprocessor=" ++
- unwords (map quote (gcc : map showOpt gcc_args ++
- ["-E", "-xc", "-DRC_INVOKED"])))
- -- -- use-temp-file is required for windres to interpret the
- -- quoting in the preprocessor arg above correctly. Without
- -- this, windres calls the preprocessor with popen, which gets
- -- the quoting wrong (discovered by experimentation and
- -- reading the windres sources). See #1828.
- : Option "--use-temp-file"
- : args)
- -- we must use the PATH workaround here too, since windres invokes gcc
- mb_env
- where
- quote x = '\"' : x ++ "\""
+ runSomethingFiltered dflags id "Windres" windres args mb_env
touch :: DynFlags -> String -> String -> IO ()
touch dflags purpose arg =
getBaseDir :: IO (Maybe String)
#if defined(mingw32_HOST_OS)
--- Assuming we are running ghc, accessed by path $()/bin/ghc.exe,
--- return the path $(stuff). Note that we drop the "bin/" directory too.
+-- Assuming we are running ghc, accessed by path $(stuff)/bin/ghc.exe,
+-- return the path $(stuff)/lib.
getBaseDir = do let len = (2048::Int) -- plenty, PATH_MAX is 512 under Win32.
buf <- mallocArray len
ret <- getModuleFileName nullPtr buf len
return (Just (rootDir s))
where
rootDir s = case splitFileName $ normalise s of
- (d, ghc_exe) | lower ghc_exe == "ghc.exe" ->
+ (d, ghc_exe)
+ | lower ghc_exe `elem` ["ghc.exe",
+ "ghc-stage1.exe",
+ "ghc-stage2.exe",
+ "ghc-stage3.exe"] ->
case splitFileName $ takeDirectory d of
- -- installed ghc.exe is in $topdir/bin/ghc.exe
- (d', bin) | lower bin == "bin" -> takeDirectory d'
- -- inplace ghc.exe is in $topdir/ghc/stage1-inplace/ghc.exe
- (d', x) | "-inplace" `isSuffixOf` lower x ->
- takeDirectory d' </> ".."
+ -- ghc is in $topdir/bin/ghc.exe
+ (d', bin) | lower bin == "bin" -> takeDirectory d' </> "lib"
_ -> fail
_ -> fail
where fail = panic ("can't decompose ghc.exe path: " ++ show s)
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