December 2003 - HOpenGL

bug in package.conf (ghci -package OpenGL / ghci -package GLUT)
by Marc A. Ziegert 30 Dec '03

30 Dec '03

there still exist systems/programs that need a strict sequence of .so files to link. i.e. at least ghci on i386-gnu-linux. coeus@titan ~ $ ghci -package GLUT ___ ___ _ / _ \ /\ /\/ __(_) / /_\// /_/ / / | | GHC Interactive, version 6.2, for Haskell 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/ \____/\/ /_/\____/|_| Type :? for help. Loading package base ... linking ... done. Loading package OpenGL ... ghc-6.2: can't load .so/.DLL for: GLU (/usr/lib/libGL U.so: undefined symbol: glPixelStorei) coeus@titan ~ $ problem to link GLU, because GL has not been linked before. it happens in the package OpenGL, because it is in the package_deps of GLUT. GLUT's libraries would have the same problem, but --because of package_deps-- GL and GLU must have been linked before. unnecessary to link them again. it is: Package {name = "OpenGL", package_deps = ["base"], extra_ld_opts = ["-lGLU", "-lGL", Package {name = "GLUT", package_deps = ["base", "OpenGL"], extra_ld_opts = ["-lglut", "-lGLU", "-lGL", and should be: Package {name = "OpenGL", package_deps = ["base"], extra_ld_opts = ["-lGL", "-lGLU", Package {name = "GLUT", package_deps = ["base", "OpenGL"], extra_ld_opts = [ "-lglut",

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found GLUT bug in ghc6.2 (passiveMotionCallback)
by Marc A. Ziegert 30 Dec '03

30 Dec '03

i was not able to use motionCallback and passiveMotionCallback together. (runtime test) it seems to be just a typical copy-paste-bug. coeus@titan ~/Documents/haskell/ghc-6.2/libraries/GLUT/Graphics/UI/GLUT/Callbacks $ diff Window.hs.old Window.hs.new 495c495 < setCallback MotionCB glutPassiveMotionFunc (makeMotionCallback . unmarshal) --- > setCallback PassiveMotionCB glutPassiveMotionFunc (makeMotionCallback . unmarshal) coeus@titan ~/Documents/haskell/ghc-6.2/libraries/GLUT/Graphics/UI/GLUT/Callbacks $

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Re: Win32 GHC cannot link GLUT (fixed)
by Manuel Garcia Rodriguez 30 Dec '03

30 Dec '03

> > [...] > > H:/ghc/ghc-6.2/HSGLUT.o: unknown symbol > `_glutMainLoop' > > ghc.exe: panic! (the `impossible' happened, GHC > version 6.2): > > can't load package `GLUT' > > Ooops, something went wrong during building and/or > packaging the .msi file, > the glut32 library is missing in the linking step. > This results in your > problem with ghci and the linking problem with ghc. > But this can easily be > fixed by manually editing the package.conf file > (probably located at > H:/ghc/ghc-6.2/package.conf at your site): Find the > package description > for GLUT (name = "GLUT",) look for the next line > containing > > extra_ld_opts = [], > > and change it to > > extra_ld_opts = ["-lglut32"] > > Hope that helps, > S. Yes, that's it. Thank you. ___________________________________________________ Yahoo! Messenger - Nueva versión GRATIS Super Webcam, voz, caritas animadas, y más... http://messenger.yahoo.es

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Win32 GHC cannot link GLUT
by Manuel Garcia Rodriguez 28 Dec '03

28 Dec '03

Hi. I've installed GHC 6.2, but trying to compile a simple HelloWindow.hs program fails. The same code runs with Hugs. Both installs are lastest .msi import Graphics.UI.GLUT import Graphics.Rendering.OpenGL main = do getArgsAndInitialize createAWindow "Hello Window" mainLoop createAWindow windowName = do createWindow windowName displayCallback $= clear [ColorBuffer] H:\Documents and Settings\manuel>ghc -package GLUT -o HelloWindow HelloWindow.hs compilation IS NOT required H:/ghc/ghc-6.2/libHSGLUT.a(Window__53.o)(.text+0x85):ghc14736.hc: undefined reference to `glutCreateWindow@4' H:/ghc/ghc-6.2/libHSGLUT.a(Registration__78.o)(.text+0x3ec):ghc10876.hc: undefined reference to `glutGetWindow@0' H:/ghc/ghc-6.2/libHSGLUT.a(Window__10.o)(.text+0x63):ghc11416.hc: undefined reference to `glutDisplayFunc@4' H:/ghc/ghc-6.2/libHSGLUT.a(Initialization__158.o)(.text+0x123):ghc16024.hc: undefined reference to `glutInit@8' H:/ghc/ghc-6.2/libHSGLUT.a(Begin__2.o)(.text+0x54):ghc15656.hc: undefined reference to `glutMainLoop@0' H:/ghc/ghc-6.2/libHSGLUT.a(Registration__38.o)(.text+0x69):ghc10876.hc: undefined reference to `glutTimerFunc@12' H:\Documents and Settings\manuel>ghci HelloWindow.hs ___ ___ _ / _ \ /\ /\/ __(_) / /_\// /_/ / / | | GHC Interactive, version 6.2, for Haskell 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/ \____/\/ /_/\____/|_| Type :? for help. Loading package base ... linking ... done. Skipping Main ( HelloWindow.hs, HelloWindow.o ) Ok, modules loaded: Main. Prelude Main> main Loading package OpenGL ... linking ... done. Loading package GLUT ... linking ... H:/ghc/ghc-6.2/HSGLUT.o: unknown symbol `_glutMainLoop' ghc.exe: panic! (the `impossible' happened, GHC version 6.2): can't load package `GLUT' Please report it as a compiler bug to glasgow-haskell-bugs(a)haskell.org, or http://sourceforge.net/projects/ghc/. Thanks. _______________________________________________________________ Yahoo! Sorteos ¡Ya puedes comprar Lotería de Navidad! http://yahoo.ventura24.es/

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Example Program and Compiliation?
by Eric L. Zeltmann 22 Dec '03

22 Dec '03

Hi all, I recently downloaded the new version of HOpenGL (1.05) and ghc(6.0.1), compiled them, set them up without any problems. Now I'm trying to strech my wings a little by doing some intial programs. Unfortunately there isn't any recent tutorials, and I know that HOpenGL has gone through some interface name changes. I was hoping that maybe somebody on the list could give me an short example program, or atleast how to run ghc to compile the Hello.hs program found in the examples/redbook_hs directory, outside of running the makefile (ie, what would be the command I would run to compile it, what packages etc.) I am currently working on a linux system, but if you only know windows, I can probably translate between the two. Thank you for your time, and if you just find this annoying, delete it. Peace. -E. Zeltmann

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by ��з�� 05 Dec '03

05 Dec '03

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