Not too long ago I've been suggested here to use glWindowPos to locate texts, because they needed to be displayed even when they were partly out of the screen. It worked fine. However now, on a new project, I'm using C++ instead of C. But now I can't get it to work. I use the following code to test it: #include <GL/gl.h> #include <GL/glu.h> #include <GL/glx.h> #include <SDL/SDL.h> int main() { glWindowPos2i(800, 600); } (I know this wouldn't work if it compiled) But my problem is, it doesn't even compile. Here's what I tried: $ gcc -l m -l GL -l GLU test.c $ (Works fine with gcc) However with g++: $ g++ -l m -l GL -l GLU test.c test.c: In function `int main()': test.c:9: error: `glWindowPos2i' undeclared (first use this function) test.c:9: error: (Each undeclared identifier is reported only once for each function it appears in.) $ Even when I prototype it manually: $ g++ -l m -l GL -l GLU test.c /tmp/ccKzzuv0.o: In function `main': test.c:(.text+0xf): undefined reference to `glWindowPos2i(int, int)' collect2: ld returned 1 exit status $ Any idea on how I can use glWindowPos2i anyway? Thanks in advance