Checks for GLUT. If a valid GLU implementation is found, the configure script would export the C preprocessor symbol "HAVE_GLU=1".
If either a valid GLU header or library was not found, by default the configure script would exit on error. This behavior can be overwritten by providing a custom "ACTION-IF-NOT-FOUND" hook.
If the header, library was found, and been tested for compiling and linking the configuration would export the required compiler flags to "GLU_CFLAGS" and "GLU_LIBS" environment variables. These two variables can also be overwritten by defining the environment variables before executing the configure program. If it was predefined, configure would not try to overwrite it, but it would still perform the compile and link test. Only when the tests succeeded does the configure script to export "HAVE_GLU=1" and to run "ACTION-IF-FOUND" hook.
If user didn’t specify the "ACTION-IF-FOUND" hook, the configuration would prepend "GLU_CFLAGS" and "GLU_LIBS" to "CFLAGS" and "LIBS", like many other autoconf macros do.
If the header "GL/glu.h" is found, "HAVE_GL_GLU_H" is defined. If the header "OpenGL/glu.h" is found, HAVE_OPENGL_GLU_H is defined.
You should use something like this in your headers:
# if defined(HAVE_WINDOWS_H) && defined(_WIN32) # include <windows.h> # endif # if defined(HAVE_GL_GLU_H) # include <GL/glu.h> # elif defined(HAVE_OPENGL_GLU_H) # include <OpenGL/glu.h> # else # error no glu.h # endif
On the OSX platform, you can use the option –with-xquartz-gl to use X11/Xquartz GLU implementation instead of the system built in GLU framework.
Some implementations (in particular, some versions of Mac OS X) are known to treat the GLU tesselator callback function type as "GLvoid (*)(...)" rather than the standard "GLvoid (*)()". If the former condition is detected, this macro defines "HAVE_VARARGS_GLU_TESSCB".
Download the latest version of ax_check_glu.m4 or browse the macro’s revision history.
Copyright © 2009 Braden McDaniel firstname.lastname@example.org
Copyright © 2013 Bastien Roucaries email@example.com
Copyright © 2016 Felix Chern firstname.lastname@example.org
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