From b48e361194530539d3d420528b9c29a3287b77dd Mon Sep 17 00:00:00 2001
From: Peter Maydell <peter.maydell@linaro.org>
Date: Wed, 23 Nov 2011 17:26:44 +0000
Subject: [PATCH] configure: Print a banner comment at the top of config.log

Print a banner comment at the top of config.log identifying
when configure was run and the arguments used. This is occasionally
useful for debugging purposes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
---
 configure | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure b/configure
index c98aed1c6..452b8cf03 100755
--- a/configure
+++ b/configure
@@ -20,6 +20,11 @@ TMPE="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.exe"
 trap "rm -f $TMPC $TMPO $TMPE" EXIT INT QUIT TERM
 rm -f config.log
 
+# Print a helpful header at the top of config.log
+echo "# QEMU configure log $(date)" >> config.log
+echo "# produced by $0 $*" >> config.log
+echo "#" >> config.log
+
 compile_object() {
   echo $cc $QEMU_CFLAGS -c -o $TMPO $TMPC >> config.log
   $cc $QEMU_CFLAGS -c -o $TMPO $TMPC >> config.log 2>&1