Hi, I've been trying to install [url=http://plib.sourceforge.net/]plib[/url] on my AAO from the terminal, I thought my openGL was installed and working fine, but when I use the command [code]./configure[/code] I get an error stating that it cant find a working GL library [code] checking for a BSD compatible install... ./install-sh -c checking whether build environment is sane... yes checking for mawk... no checking for gawk... gawk checking whether make sets ${MAKE}... no includedir changed to ${prefix}/include/plib libdir is ${exec_prefix}/lib checking for gcc... gcc checking for C compiler default output... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for executable suffix... checking for object suffix... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for style of include used by make... none checking dependency style of gcc... none checking how to run the C preprocessor... gcc -E checking for g++... g++ checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking dependency style of g++... none checking how to run the C++ preprocessor... g++ -E checking for a BSD compatible install... ./install-sh -c checking for ranlib... ranlib checking build system type... i686-pc-linux checking host system type... i686-pc-linux checking for X... no checking for pthread_create in -lpthread... no checking for glNewList in -lGL... no checking for glNewList in -lMesaGL... no configure: error: could not find working GL library [/code] Any ideas how I can fix this? Thanks.