Hi all. I use gcc 4.2.3. When I trying to compile OpenGL application, this error appears: /usr/include/GL/glext.h:3371: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘GLintptr’ In glext.h #include <stddef.h> ... typedef ptrdiff_t GLintptr; ... I think, its because gcc includes stddef.h from somewhere, but not from /usr/lib/gcc/i486-slackware-linux/4.2.3/include. And then ptrdiff_t is undefined. I may be wrong. How to specify include path and search sequence, and how to know the current one? I tried to add -I with path, but it doesn't help. Please, sorry for my English. Thanks, Victor. -- View this message in context: http://www.nabble.com/gcc-include-path-problem--tp17815830p17815830.html Sent from the gcc - Help mailing list archive at Nabble.com.