Re: Messed up gl_COMPILER_PREPARE_CHECK_DECL

[Bruno Haible]

>       * m4/~~gnulib.m4: New file.

Not sure whether this is needed, but it feels safer with this patch:


2020-01-18  Bruno Haible  <address@hidden>

        Ensure Automake does not drop ~~gnulib.m4.
        * m4/~~gnulib.m4 (gl_ZZGNULIB): New macro.
        * m4/gnulib-common.m4 (gl_COMMON): Require it.

diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index 6c4cad6..276ed1a 100644
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 46
+# gnulib-common.m4 serial 47
 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -12,6 +12,7 @@ AC_DEFUN([gl_COMMON], [
   dnl Use AC_REQUIRE here, so that the code is expanded once only.
   AC_REQUIRE([gl_00GNULIB])
   AC_REQUIRE([gl_COMMON_BODY])
+  AC_REQUIRE([gl_ZZGNULIB])
 ])
 AC_DEFUN([gl_COMMON_BODY], [
   AH_VERBATIM([_Noreturn],
diff --git a/m4/~~gnulib.m4 b/m4/~~gnulib.m4
index bb5e910..f476918 100644
--- a/m4/~~gnulib.m4
+++ b/m4/~~gnulib.m4
@@ -15,3 +15,9 @@ m4_define([AC_PROG_CC],
 gl_COMPILER_CLANG
 gl_COMPILER_PREPARE_CHECK_DECL
 ])
+
+# gl_ZZGNULIB
+# -----------
+# Witness macro that this file has been included.  Needed to force
+# Automake to include this file after all other gnulib .m4 files.
+AC_DEFUN([gl_ZZGNULIB])