From dadf4489022aeff2e6ec10869e89ecbb3146b07b Mon Sep 17 00:00:00 2001
From: Jean-Francois Dockes <jfd@recoll.org>
Date: Thu, 29 Jun 2017 13:45:53 +0200
Subject: [PATCH] configure: putenv test needs c++

---
 src/configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/configure.ac b/src/configure.ac
index af165c24..b9db9383 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -260,6 +260,7 @@ AC_CHECK_LIB([z], [zlibVersion], [], [])
 
 ############# Putenv
 AC_MSG_CHECKING(for type of string parameter to putenv)
+AC_LANG_PUSH([C++])
 AC_TRY_COMPILE([
     #include <stdlib.h>
   ],[
@@ -268,6 +269,7 @@ AC_TRY_COMPILE([
 if test X$rcl_putenv_string_const = X1 ; then
   AC_DEFINE(PUTENV_ARG_CONST, 1, [putenv parameter is const])
 fi
+AC_LANG_POP([C++])
 
 
 #### Look for Xapian. Done in a strange way to work around autoconf