Re: [HOpenGL] problems compiling hopengl

chris wrote:

[...] GL_PerFragment__57.o(.text+0x12c): undefined reference to `glBlendEquation' gmake[2]: *** [BlendEqn] Error 1 gmake[1]: *** [all] Error 1 gmake: *** [all] Error 1

i am running freebsd 4.7 RC with ghc-5.04.1, mesa-3.4.2_2, and green-card-2.04_1.

Hmmm, I assume that you are using the latest HOpenGL version (1.03). The problem seems to be that your (ancient) Mesa version is lying: It probably says that it implements OpenGL 1.2, but doesn't actually provide glBlendEquation. Possible solutions: * Improve HOpenGL's autoconf magic to detect this and send me a patch. :-) * Upgrade your Mesa. * Simply tweak examples/redbook_HS/Makefile{,.in} to exclude BlendEqn.hs (variable DONTCOMPILE). Cheers, S.