From: Ian Jackson <iwj@mariner.uk.xensource.com>
Date: Wed, 9 Jul 2008 10:38:33 +0000 (+0100)
Subject: Do not rebuild every time ./xen-setup is run.
X-Git-Tag: xen-3.3.0-rc1~50
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=f2cd01780df903d20a0f68a911287993731850cc;p=qemu-xen-3.3-testing.git

Do not rebuild every time ./xen-setup is run.

This involves saving config-host.h while we rerun config and
regenerate it, putting the saved version back, and then installing
the new version only if it has changed.
---

diff --git a/xen-setup b/xen-setup
index 6b209360..826f9402 100755
--- a/xen-setup
+++ b/xen-setup
@@ -7,6 +7,8 @@ rm -f $target/Makefile
 rm -f $target/config.mak
 rm -f config-host.mak
 
+mv config-host.h config-host.h~
+
 ./configure --disable-curses "$@" --prefix=/usr
 
 target=i386-dm
@@ -21,4 +23,6 @@ cat xen-config-host.mak >>config-host.mak
 
 sed -e 's,qemu,xen/qemu,' config-host.h >config-host.h.new
 echo '#include "xen-config-host.h"' >>config-host.h.new
-mv config-host.h.new config-host.h
+
+mv config-host.h~ config-host.h
+cmp -s config-host.h.new config-host.h || mv config-host.h.new config-host.h