From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:33168)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lcapitulino@redhat.com>) id 1SXGbE-0005UF-Uv
	for qemu-devel@nongnu.org; Wed, 23 May 2012 14:47:58 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <lcapitulino@redhat.com>) id 1SXGbD-0007fl-3S
	for qemu-devel@nongnu.org; Wed, 23 May 2012 14:47:56 -0400
Received: from mx1.redhat.com ([209.132.183.28]:22092)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lcapitulino@redhat.com>) id 1SXGbC-0007fG-Qy
	for qemu-devel@nongnu.org; Wed, 23 May 2012 14:47:55 -0400
From: Luiz Capitulino <lcapitulino@redhat.com>
Date: Wed, 23 May 2012 15:48:04 -0300
Message-Id: <1337798885-23070-2-git-send-email-lcapitulino@redhat.com>
In-Reply-To: <1337798885-23070-1-git-send-email-lcapitulino@redhat.com>
References: <1337798885-23070-1-git-send-email-lcapitulino@redhat.com>
Subject: [Qemu-devel] [PATCH 1/2] configure: check if environ is declared
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: qemu-devel@nongnu.org
Cc: aliguori@us.ibm.com, eblake@redhat.com, mdroth@linux.vnet.ibm.com, afaerber@suse.de, kraxel@redhat.com

Some systems may declare environ automatically, others don't. Check for it.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---
 configure |   19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/configure b/configure
index b55a792..1f338f8 100755
--- a/configure
+++ b/configure
@@ -2831,6 +2831,21 @@ if compile_prog "" "" ; then
     linux_magic_h=yes
 fi
 
+########################################
+# check if environ is declared
+
+has_environ=no
+cat > $TMPC << EOF
+#include <unistd.h>
+int main(void) {
+    environ = environ;
+    return 0;
+}
+EOF
+if compile_prog "" "" ; then
+    has_environ=yes
+fi
+
 ##########################################
 # End of CC checks
 # After here, no more $cc or $ld runs
@@ -3342,6 +3357,10 @@ if test "$linux_magic_h" = "yes" ; then
   echo "CONFIG_LINUX_MAGIC_H=y" >> $config_host_mak
 fi
 
+if test "$has_environ" = "yes" ; then
+  echo "CONFIG_HAS_ENVIRON=y" >> $config_host_mak
+fi
+
 # USB host support
 case "$usb" in
 linux)
-- 
1.7.9.2.384.g4a92a