Argp android build diff

argp-header.patch

diff -Naur argp_sources/gllib/argp.h argp_sources/gllib/argp.h.new
--- argp_sources/gllib/argp.h   2019-02-19 20:38:53.000000000 +0000
+++ argp_sources/gllib/argp.h.new       2020-01-08 16:21:42.843277973 +0000
@@ -19,6 +19,17 @@
 #ifndef _ARGP_H
 #define _ARGP_H

+#ifndef ARGP_EI
+#  define ARGP_EI inline
+#endif
+
+// since ece81a73b64483a68f5157420836d84beb3a1680 argp.h as distributed with
+// gnulib requires _GL_INLINE_HEADER_BEGIN macro to be defined.
+#ifndef _GL_INLINE_HEADER_BEGIN
+#  define _GL_INLINE_HEADER_BEGIN
+#  define _GL_INLINE_HEADER_END
+#endif
+
 #include <stdio.h>
 #include <ctype.h>
 #include <getopt.h>