From df80f4e69db3d088a5c7940a28c95f494f0f8df5 Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Tue, 31 Jan 2017 09:31:10 -0800
Subject: Check for C++ in configure

Recent GMP/GCC/GDB releases require c++.

Signed-off-by: Alexey Neyman <stilor@att.net>

diff --git a/configure.ac b/configure.ac
index e0cd202..ba24711 100644
--- a/configure.ac
+++ b/configure.ac
@@ -186,8 +186,10 @@ AC_PROG_LN_S
 #--------------------------------------------------------------------
 # A bunch of boring tests...
 #--------------------------------------------------------------------
+# Modern GCC/GDB releases require C++ support in the compiler
 AC_PROG_CC
-AS_IF([test -z "$CC"],
+AC_PROG_CXX
+AS_IF([test -z "$CC" -o -z "$CXX"],
       [AC_MSG_ERROR([no suitable compiler found])])
 AC_PROG_CPP
 
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