if [ -d /opt/vc/include -a -d /opt/vc/lib ]; then
CFLAGS_GLES="$CFLAGS_GLES -I/opt/vc/include -I/opt/vc/include/interface/vcos/pthreads"
LDLIBS_GLES="$LDLIBS_GLES -L/opt/vc/lib"
if [ -d /opt/vc/include -a -d /opt/vc/lib ]; then
CFLAGS_GLES="$CFLAGS_GLES -I/opt/vc/include -I/opt/vc/include/interface/vcos/pthreads"
LDLIBS_GLES="$LDLIBS_GLES -L/opt/vc/lib"