[ Redirected to hopengl mailing list ] Ralf Hinze wrote:

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Compiling 6.0 from source fails with:

../../ghc/compiler/ghc-inplace -H16m -O -Wall -fffi -Iinclude '-#include "HsOpenGL.h"' -cpp -I/usr/X11R6/include -DCALLCONV=ccall '-DGET_PROC_ADDRESS="glXGetProcAddressARB"' -package-name OpenGL -O -Rghc-timing -package base -split-objs -c Graphics/Rendering/OpenGL/GL/Extensions.hs -o Graphics/Rendering/OpenGL/GL/Extensions.o -ohi Graphics/Rendering/OpenGL/GL/Extensions.hi Graphics/Rendering/OpenGL/GL/Extensions.hs:42: parse error on input `glXGetProcAddressARB' <<ghc: 3261568 bytes, 2 GCs, 20548/20548 avg/max bytes residency (1 samples), 5M in use, 0.00 INIT (0.00 elapsed), 0.01 MUT (0.09 elapsed), 0.01 GC (0.03 elapsed) :ghc>> make[2]: *** [Graphics/Rendering/OpenGL/GL/Extensions.o] Fehler 1 make[1]: *** [all] Fehler 1 make[1]: Leaving directory `/var/tmp/portage/ghc-6.0/work/stage2-build/libraries' make: *** [build] Fehler 1

The following patch worked for me (but does it cure the problem?)

irrwisch root # diff libraries/OpenGL/Graphics/Rendering/OpenGL/GL/Extensions.hs libraries/OpenGL/Graphics/Rendering/OpenGL/GL/Extensions.hs-orig 42c42 < foreign import CALLCONV unsafe GET_PROC_ADDRESS :: ---

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foreign import CALLCONV unsafe GET_PROC_ADDRESS glXGetProcAddressARB ::

Hmmmm, that's definitely no solution. What platform exactly are you using? (ghc used for building, gcc version, etc.) Calling make with EXTRA_HC_OPTS="-v -keep-tmp-files" and sending the output plus the generated *.hscpp file might help. I guess that something goes wrong during the preprocessing stage. On a non-WinDoze platform the last lines of Extensions.hs should expand into: foreign import ccall unsafe "glXGetProcAddressARB" glXGetProcAddressARB :: CString -> IO (FunPtr a) On WinDoze they should expand into: foreign import stdcall unsafe "wglGetProcAddress" glXGetProcAddressARB :: CString -> IO (FunPtr a) Cheers, S.