I'm trying to get ExternalProject_Add to build a TPL that doesn't have a
CMakeLists.txt file in the top-level directory. The TPL untars as
foo/{A,B} where A and B each contain a CMakeLists.txt file and are
independent of each other. I only want to build "A" and would like to have
cmake run with "foo/A" as the <path-to-source>. Unfortunately I can't seem
to manage it. The tar file is unpacked with ${SOURCE_DIR} as its root, and
that same directory is used as the <path-to-source> for the cmake command
-- I want ${SOURCE_DIR}/A. Any suggestions on how to make ExternalProject
do what I want? Clearly I can just repackage the tar file, but I'd rather
use the pristine tar file if I can.
Thanks
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