Sometimes you need to get into the build directory, in my case for
OpenColorIO I use help2man to generate some of the man pages.
I had to rely on the power of Google/Gmail to find Neal's response to one
of my earlier emails to find the answer again...
%{_vpath_builddir}
But that begs the question, now that we have updated %cmake, and new
%cmake_build & %cmake_install, why is it %_vpath_builddir and not
%_cmake_builddir?
Thanks,
Richard