https://gitlab.freedesktop.org/cairo/cairo/-/issues/101

--- test/Makefile.am.orig	2021-05-28 10:52:08 UTC
+++ test/Makefile.am
@@ -18,7 +18,9 @@ endif
 endif
 
 if CAIRO_HAS_GL_SURFACE
+if CAIRO_HAS_GLX_FUNCTIONS
 test_sources += $(gl_surface_test_sources)
+endif
 endif
 
 if CAIRO_HAS_EGL_FUNCTIONS