[libvirt] [PATCH python] allow pkg-config binary to be set by env

[Cole Robinson]

ping reviewers

On 06/28/2016 03:10 PM, Cole Robinson wrote:
> From: Markus Rothe <markusr815 at gmail.com>
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1350523
> ---
>  setup.py | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/setup.py b/setup.py
> index 099b1e0..a4cfb88 100755
> --- a/setup.py
> +++ b/setup.py
> @@ -28,6 +28,8 @@ _pkgcfg = -1
>  def get_pkgcfg(do_fail=True):
>      global _pkgcfg
>      if _pkgcfg == -1:
> +        _pkgcfg = os.getenv('PKG_CONFIG')
> +    if _pkgcfg is None:
>          _pkgcfg = distutils.spawn.find_executable("pkg-config")
>      if _pkgcfg is None and do_fail:
>          raise Exception("pkg-config binary is required to compile libvirt-python")
>