[Xen-changelog] [xen-unstable] libxl: avoid build warning when _libxl_types.h does not initially exist.

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1307031927 -3600
# Node ID c09a6c9a99e820968a9b697bff1ba62ac102532d
# Parent  0ad8a538b3d8a896a6222106e927eec9085444ad
libxl: avoid build warning when _libxl_types.h does not initially exist.

Olaf Hering reports:
        if ! cmp _libxl_paths.h.2.tmp _libxl_paths.h; then mv -f 
_libxl_paths.h.2.tmp _libxl_paths.h; fi
        cmp: _libxl_paths.h: No such file or directory

Use "cmp -s" to silence the error. cmp returns 2 in this case and so the mv
does occur.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Tested-by: Olaf Hering <olaf@xxxxxxxxx>
Committed-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---


diff -r 0ad8a538b3d8 -r c09a6c9a99e8 tools/libxl/Makefile
--- a/tools/libxl/Makefile      Thu Jun 02 17:24:41 2011 +0100
+++ b/tools/libxl/Makefile      Thu Jun 02 17:25:27 2011 +0100
@@ -69,7 +69,7 @@
 
 _libxl_paths.h: genpath
        sed -e "s/\([^=]*\)=\(.*\)/#define \1 \2/g" $@.tmp >$@.2.tmp
-       if ! cmp $@.2.tmp $@; then mv -f $@.2.tmp $@; fi
+       if ! cmp -s $@.2.tmp $@; then mv -f $@.2.tmp $@; fi
 
 libxl_paths.c: _libxl_paths.h
 

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