Check for GLX. If GLX is found, the required preprocessor and linker flags are included in the output variables "GLX_CFLAGS" and "GLX_LIBS", respectively. If no GLX implementation is found, "no_glx" is set to "yes".
If the header "GL/glx.h" is found, "HAVE_GL_GLX_H" is defined. If the header "OpenGL/glx.h" is found, HAVE_OPENGL_GLX_H is defined. These preprocessor definitions may not be mutually exclusive.
You should use something like this in your headers:
# if defined(HAVE_WINDOWS_H) && defined(_WIN32) # include <windows.h> # endif # if defined(HAVE_GL_GLX_H) # include <GL/glx.h> # elif defined(HAVE_OPENGL_GLX_H) # include <OpenGL/glx.h> # else # error no glx.h # endif
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