un/dosifyPath in SysTools.lhs bug?
Mon, 14 Apr 2003 18:38:07 +1000
I'm trying to build ghc (the 5.04.3 source tarball) on Windows, but =
after the ghc-inplace is written and is used to build something, ghc =
If I cut and paste the command* and run it with -v, it's evident that =
trying to execute /cygdrive/c/mingw/bin/gcc, which is the gcc that I
But ghc is a mingw executable! So I think runSomething in SysTools.lhs, =
whatever calls it, might have a bug. From the comments of runSomething =
clear that it expects a 'native' program. Anyway, the problem can be =
cmd_line =3D pgm ++ ...
cmd_line =3D (dosifyPath pgm) ++ ...
And dosifyPath and undosifyPath (#if defined(mingw32_HOST_OS)) have no
regard for drive letters! Shouldn't they be something like:
unDosifyPath xs =3D=20
case (subst '\\' '/' xs) of
drive : ':' : rest -> "/cygdrive/" ++ (drive : rest)
xs' -> xs'
=3D subst '/' '\\' real_stuff
-- fully convince myself that /cygdrive/ prefixes cannot
-- really appear here.
cygdrive_prefix =3D "/cygdrive/"
| cygdrive_prefix `isPrefixOf` stuff =3D
case (dropList cygdrive_prefix stuff) of
drive : rest -> drive : ':' : rest
| otherwise =3D stuff
That comment re: cygdrive in dosifyPath is rather ominous... but those
changes at least allow ghc-inplace to start compiling the next thing...
The build then barfed in rts doing:
../../ghc/compiler/ghc-inplace -O2 -package-name rts -O -Rghc-timing =
Exception.hc -o Exception.o
Because Exception.hc couldn't #include "Stg.h"; it seems the GHC include
path was specified as a couple of Options instead of a single =
which meant showOptions didn't dosify it.
Doing a quick hack in showOptions to peek at Options for the /cygdrive/
prefix keeps the build going. What I'm wondering is:
Is anyone building GHC on Windows, and if so, how do you do it?
* The command is:
../../ghc/compiler/ghc-inplace -optc-mno-cygwin -optc-O -optc-Wall =
-optc-Wmissing-declarations -optc-Winline -optc-Waggregate-return
-optc-Wbad-function-cast -optc-Wcast-align -optc-I../includes -optc-I.
-optc-Iparallel -optc-DCOMPILING_RTS -optc-fomit-frame-pointer
-optc-DDLLized -O2 -package-name rts -O -Rghc-timing -hisuf dll_hi =
dll_hc -osuf dll_o -c Main.c -o Main.dll_o