This is happening on two separate PCs both using Fedora 9 (they are virtually identical) cat config.log | grep -i "not found" configure:11168: result: not found configure:11234: result: not found #define HAVE_GL_GLU_H 1 | /* end confdefs.h. */ | | /* Override any GCC internal prototype to avoid an error. | Use char because int might match the return type of a GCC | builtin and then its argument prototype would still apply. */ | #ifdef __cplusplus | extern "C" | #endif | char glXCreateContext (); | int | main () | { | return glXCreateContext (); | ; | return 0; | } configure:11168: result: not found configure:11170: checking for -lGL configure:11205: gcc -o conftest -g -O2 conftest.c -lGL -lXext -lX11 -lm -dylib_file /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib >&5 gcc: /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib: No such file or directory ls /usr/lib/libGL* -lh lrwxrwxrwx 1 root root 19 2008-05-20 12:29 /usr/lib/libGLcore.so.1 -> libGLcore.so.173.08 -rwxr-xr-x 1 root root 15M 2008-05-20 12:29 /usr/lib/libGLcore.so.173.08 -rw-r--r-- 1 root root 653 2008-05-20 12:29 /usr/lib/libGL.la lrwxrwxrwx 1 root root 10 2008-07-09 07:10 /usr/lib/libGL.so -> libGL.so.1 lrwxrwxrwx 1 root root 15 2008-07-09 07:06 /usr/lib/libGL.so.1 -> libGL.so.173.08 -rwxr-xr-x 1 root root 442K 2008-06-27 21:25 /usr/lib/libGL.so.1.2 -rwxr-xr-x 1 root root 702K 2008-05-20 12:29 /usr/lib/libGL.so.173.08 lrwxrwxrwx 1 root root 11 2008-07-09 07:11 /usr/lib/libGLU.so -> libGLU.so.1 lrwxrwxrwx 1 root root 20 2008-07-09 07:06 /usr/lib/libGLU.so.1 -> libGLU.so.1.3.070100 -rwxr-xr-x 1 root root 493K 2008-06-27 21:25 /usr/lib/libGLU.so.1.3.070100 I noticed I did not have mesa-libGLw or mesa-libGLw-devel installed, have installed it but still no OpenGL support. yum list | grep -i libgl libglade2.i386 2.6.2-5.fc9 installed libglade2-devel.i386 2.6.2-5.fc9 installed libglademm24.i386 2.6.6-1.fc9 installed mesa-libGL.i386 7.1-0.37.fc9 installed mesa-libGL-devel.i386 7.1-0.37.fc9 installed mesa-libGLU.i386 7.1-0.37.fc9 installed mesa-libGLU-devel.i386 7.1-0.37.fc9 installed mesa-libGLw.i386 6.5.1-5.fc9 installed mesa-libGLw-devel.i386 6.5.1-5.fc9 installed pygtk2-libglade.i386 2.12.1-6.fc9 installed Glide3-libGL.i386 6.2.1-8.fc9 fedora glade3-libgladeui.i386 3.4.4-1.fc9 fedora glade3-libgladeui-devel.i386 3.4.4-1.fc9 fedora libglade.i386 1:0.17-21.fc9 fedora libglade-devel.i386 1:0.17-21.fc9 fedora libglade-java.i386 2.12.5-8.fc9 fedora libglade-java-devel.i386 2.12.5-8.fc9 fedora libglademm24-devel.i386 2.6.6-1.fc9 fedora ruby-libglade2.i386 0.17.0-0.4.rc1.fc9 updates $find /usr -name '*libGL.dylib*' libGL.dylib is not present on the system. $ find /usr -name '*libGL*' /usr/lib/libGLcore.so.1 /usr/lib/libGLw.so.1.0.0 /usr/lib/libGL.so /usr/lib/libGLcore.so.173.08 /usr/lib/libGL.la /usr/lib/libGLU.so /usr/lib/libGLw.so /usr/lib/libGL.so.1.2 /usr/lib/libGLU.so.1.3.070100 /usr/lib/libGLU.so.1 /usr/lib/nvidia/libGLcore.so.1 /usr/lib/nvidia/libGL.so /usr/lib/nvidia/libGLcore.so.173.14.09 /usr/lib/nvidia/libGLcore.so /usr/lib/nvidia/libGL.so.1 /usr/lib/nvidia/libGL.so.173.14.09 /usr/lib/libGL.so.1 /usr/lib/libGL.so.173.08 /usr/lib/libGLw.so.1 /usr/share/doc/mesa-libGLw-6.5.1