File 0640-erts-Add-include-guard-to-config.h-in-erts.patch of Package erlang

From 7ed9da9c776eb4167b1cb2448a500734a6d4ed6e Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Fri, 6 Nov 2020 20:34:34 +0100
Subject: [PATCH] erts: Add #include guard to config.h in erts

to avoid redefining of undef'd macros.
---
 erts/configure.in | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/erts/configure.in b/erts/configure.in
index 878c614071..1d3b4e6d63 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -4935,6 +4935,9 @@ dnl ---------------------------------------------------------------------
 dnl Autoheader macro for adding code at top and bottom of config.h.in
 dnl ---------------------------------------------------------------------
 AH_TOP([
+#ifndef __ERTS_CONFIG_H__
+#define __ERTS_CONFIG_H__
+
 #define GHBN_R_SOLARIS  2
 #define GHBN_R_AIX      3
 #define GHBN_R_GLIBC    4
@@ -4969,6 +4972,8 @@ AH_BOTTOM([
 #if defined(DEBUG) && defined(USE_THREADS) && !defined(ERTS_ENABLE_LOCK_CHECK)
 #define ERTS_ENABLE_LOCK_CHECK 1
 #endif
+
+#endif /* __ERTS_CONFIG_H__ */
 ])
 
 if test "x$GCC" = xyes; then
-- 
2.26.2