On 06/13/2012 06:09 AM, Eric Blake wrote:
On 06/12/2012 11:21 PM, Alex Jia wrote:
2012-06-12 19:53:42.675+0000: 6076: error : qemuCapsComputeCmdFlags:1209 : unsupported configuration: this qemu binary requires libvirt to be compiled with yajl
Need to install yajl-devel rpm package. # ./configure -h | grep yajl --with-yajl use YAJL for JSON parsing/formatting [default=check]
Hmm, I'm wondering if libvirt's configure.ac should be enhanced to probe 'qemu -version' when qemu support is enabled, and insist on yajl in that case. Obviously, this probe would have to be tolerant of qemu not existing, but erroring out earlier than runtime might help people build correctly since this seems to be a recurring question on the list. And it must not break on RHEL 5, where qemu is old enough to not require yajl and where yajl is not available by default.
In fact, I just proposed a patch to do that: https://www.redhat.com/archives/libvir-list/2012-June/msg00527.html -- Eric Blake eblake@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org