[OE-core] [PATCH] qemu: explicitly disable xen support

[Ming Liu]

We don't make use of xen and when building on Ubuntu 13.04 when
libxen-dev is installed on the build host you will get errors like the
following:

| /usr/include/x86_64-linux-gnu/bits/string3.h:81: warning: memset used with constant zero length parameter; this could be due to transposed parameters
| /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib/libxenguest.so: undefined reference to `lzma_alone_decoder at XZ_5.0'
| /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib/libxenguest.so: undefined reference to `lzma_code at XZ_5.0'
| /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib/libxenguest.so: undefined reference to `lzma_stream_decoder at XZ_5.0'
| /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib/libxenguest.so: undefined reference to `lzma_end at XZ_5.0'

This change disables xen for both -native and target packages but
since it is a PACKAGECONFIG a user could tune this to have xen support
in the target package.

Signed-off-by: Mark Asselstine <mark.asselstine at windriver.com>
Signed-off-by: Ming Liu <ming.liu at windriver.com>
---
 meta/recipes-devtools/qemu/qemu.inc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc
index 702fe01..95a3aa3 100644
--- a/meta/recipes-devtools/qemu/qemu.inc
+++ b/meta/recipes-devtools/qemu/qemu.inc
@@ -79,6 +79,7 @@ do_install_append() {
 PACKAGECONFIG ??= ""
 PACKAGECONFIG[virtfs] = "--enable-virtfs --enable-attr,--disable-virtfs,libcap attr,"
 PACKAGECONFIG[aio] = "--enable-linux-aio,--disable-linux-aio,libaio,"
+PACKAGECONFIG[xen] = "--enable-xen, --disable-xen,,"
 
 # Qemu target will not build in world build for ARM or Mips
 BROKEN_qemuarm = "1"
-- 
1.8.4.1