[Visualpython-users] gl_extensions compile error

Okay, some steps further in my endavour to build visual for EPD, I am 
now using the standard makefile for MacOS, but had to add the 
boost_source folder for including the boost header files (maybe i 
messed something up at compile time there, let's see).

But currently I am blocked by not compiling gl_extensions:

g++ -fPIC -MMD -DNDEBUG -mmacosx-version-min=10.5 -arch i386 -DPIC -O2 
-g -finline-functions -I../boost_1_49_0 -I../visual/include/mac 
-I../visual/include 
-I/Library/Frameworks/Python.framework/Versions/Current/include/python2.7 
-I/Library/Frameworks/Python.framework/Versions/Current/lib/python2.7/site-packages/numpy/core/include 
-I../visual/dependencies/boost_files 
-I../visual/dependencies/threadpool/include 
-F/System/Library/Frameworks/AGL.framework 
-F/System/Library/Frameworks/Carbon.framework 
-F/System/Library/Frameworks/OpenGL.framework   -c -o gl_extensions.o 
../visual/src/core/util/gl_extensions.cpp
../visual/src/core/util/gl_extensions.cpp: In member function ‘void 
cvisual::gl_extensions::init(cvisual::display_kernel&)’:
../visual/src/core/util/gl_extensions.cpp:50: error: invalid conversion 
from ‘void (*)(GLenum, GLint, GLint, GLsizei, GLsizei, GLsizei, GLint, 
GLenum, GLenum, const GLvoid*)’ to ‘void (*)(GLenum, GLint, GLenum, 
GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid*)’
make: *** [gl_extensions.o] Error 1


Has anybody ever seen such an error and remembers what was wrong?

TIA,
Michael