xfce4-desktop: excluding Thunar breaks build

[Andreas Koga]

Hi,

Firstly, I'd like to express my thanks for the hard work you porters put 
into making FreeBSD a viable OS. Without you guys it would be a mess of 
code and dependencies that the user would have to fight with to get 3rd 
party software to work on FBSD.

I'm not sure if I'm the only one experiencing this, but when I build 
with Poudriere, x11-wm/xfce4-desktop doesn't build when Thunar is 
excluded from the build options. (See attached 
xfce4-desktop-4.12.1-WITHOUTthunar.log.) Mysteriously though, it will 
build when Thunar is included. The reason for the failure when Thunar is 
excluded:

    checking for exo-1 >= 0.7.0... not found


I checked the Poudriere logs and libexo built with no problems. 
xfce4-desktop is the only package that failed during the Poudriere 
session. I noted a difference between when Thunar is excluded and 
included for xfce4-desktop:

    With Thunar enabled in xfce4-desktop build option:

    =======================<phase: lib-depends >============================

    [101amd64-default-job-01] `-- Installing libexo-0.10.4...

    Without Thunar, the above is absent. Again, libexo was built by
    Poudriere with no issues. 


I've included logs for both conditions. If you need my complete 
Poudriere logs, let me know and I can send them to you.

Again, thanks for the fabulous work you and your group does.

Best,

Andreas