Print some debugging information for pkg-config detection

Commit d44781730ccd4d48af79f480813bf3f9a4000253 disabled use of pkg-
config on Mac, which in turn automatically disables all of the tests
that depend on pkg-config too, like D-Bus. If you then use the -dbus
flag, configure would error out telling you that it couldn't find D-Bus,
despite it being there.

Now we print some helpful information on error and extra information for
finding out why it may have got disabled.

Change-Id: Ic4e41c58d62d80eb1a0f3ca1c93529e049aaf231
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

0 files changed, 0 insertions, 0 deletions