I am trying to build a finite element program from source. All goes well until I get the following error message:
gcc -O2 -Wall -I./ -I/usr/include -I/usr/X11R6/include -c -o setFunktions.o setFunktions.c cc1: warning: changing search order for system directory "/usr/include" cc1: warning: as it has already been specified as a non-system directory setFunktions.c: In function `drawNurl_plot': setFunktions.c:1286: `GLU_ERROR' undeclared (first use in this function) setFunktions.c:1286: (Each undeclared identifier is reported only once setFunktions.c:1286: for each function it appears in.) setFunktions.c:1286: warning: passing arg 3 of `gluNurbsCallback' from incompatible pointer type setFunktions.c: In function `drawNurs_plot': setFunktions.c:1353: `GLU_ERROR' undeclared (first use in this function) setFunktions.c:1353: warning: passing arg 3 of `gluNurbsCallback' from incompatible pointer type setFunktions.c: In function `senddata': setFunktions.c:5985: warning: passing arg 4 of `qsort' from incompatible pointer type setFunktions.c:6054: warning: passing arg 4 of `qsort' from incompatible pointer type make: *** [setFunktions.o] Error 1 I can see where GLU_ERROR is defined in /usr/X11R6/include/GL/glu.h so I don't understand the reason for the error. Thanks in advance for any help