From 3073db4e816a3566dc744b88eb30bf6e6f6acff6 Mon Sep 17 00:00:00 2001
From: Wilson Snyder <wsnyder@wsnyder.org>
Date: Wed, 11 Jun 2008 21:00:42 -0400
Subject: [PATCH] Add configure check that C++ is working

---
 configure.ac | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5f93e78a4..d370d8a38 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,6 +18,13 @@ CXX=g++
 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_INSTALL
+
+AC_LANG_PUSH(C++)
+AC_MSG_CHECKING([that C++ compiler can compile simple program])
+AC_TRY_RUN([int main() { return 0; }],
+           AC_MSG_RESULT(yes),
+           AC_MSG_RESULT(no);AC_MSG_ERROR([a working C++ compiler is required]))
+
 AC_PATH_PROG(PERL,perl)
 if test "x$PERL" = "x" ; then
    AC_MSG_ERROR([Cannot find "perl" in your PATH, please install it])