This patch is  needed to produce  a copy of  "glibconfig.h" that works
correctly with various "glib20"-based packages.

--- glib-2.47.4.old/glib/gmacros.h
+++ glib-2.47.4/glib/gmacros.h
@@ -29,10 +29,6 @@
 #ifndef __G_MACROS_H__
 #define __G_MACROS_H__
 
-#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
-#error "Only <glib.h> can be included directly."
-#endif
-
 /* We include stddef.h to get the system's definition of NULL
  */
 #include <stddef.h>