File cogl-fix-mesa20.patch of Package cogl

--- cogl-1.22.4+8.orig/configure.ac	2020-02-24 14:18:52.687126415 +0000
+++ cogl-1.22.4+8/configure.ac	2020-02-24 14:30:10.484314856 +0000
@@ -1216,6 +1216,12 @@
               [],
               [AC_MSG_ERROR([Unable to locate required EGL headers])],
               [#include <EGL/egl.h>])
+            AC_CHECK_HEADERS(
+              [EGL/eglmesaext.h],
+              [],
+              [AC_MSG_ERROR([Unable to locate required EGL headers])],
+              [#include <EGL/egl.h>
+#include <EGL/eglext.h>])
 
             AC_CHECK_LIB(EGL, [eglInitialize],
               [COGL_EXTRA_LDFLAGS="$COGL_EXTRA_LDFLAGS -lEGL"],
@@ -1226,7 +1232,8 @@
           )
 
         COGL_EGL_INCLUDES="#include <EGL/egl.h>
-#include <EGL/eglext.h>"
+#include <EGL/eglext.h>
+#include <EGL/eglmesaext.h>"
         AC_SUBST([COGL_EGL_INCLUDES])
       ])