AM_CONDITIONAL(NEED_OPENGL_COMMON, test "x$enable_opengl" = xyes -o \
"x$enable_gles1" = xyes -o \
"x$enable_gles2" = xyes)
+AM_CONDITIONAL(NEED_KHRPLATFORM, test "x$enable_egl" = xyes -o \
+ "x$enable_gles1" = xyes -o \
+ "x$enable_gles2" = xyes)
# Validate GLX options
if test "x$enable_glx" = xyes; then