From b8db1173c186cd1944513e4bdcc593cbff925a1f Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Sat, 16 Jan 2021 10:58:18 +0100
Subject: [PATCH] [configure.ac] Compilation fix for autoconf2.70 and
 compilation with g++

---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index bb8f0993..209f0b72 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,6 +61,9 @@ echo "Feature summary:" > features.log
 
 AC_PROG_CC
 AC_PROG_CXX
+if test x"$CC" = x"$CXX"; then
+    AC_LANG(C++)
+fi
 AC_CHECK_TOOL([LD], [ld])
 AC_PROG_AWK
 AC_PATH_PROGS(AWK, "$AWK")