configure:9874: checking for GL/gl.h
configure:9897: gcc -c -g -O2   conftest.c >&5
configure:9903: $? = 0
configure:9910: test -z "$ac_c_werror_flag" || test ! -s conftest.err
configure:9913: $? = 0
configure:9920: test -s conftest.o
configure:9923: $? = 0
configure:9936: result: yes