Background: I'm trying to build Ceph in OBS from the tarball generated
by make-dist.
I noticed that Shaman builds download Boost from the Internet - this is
not an option in OBS because the build workers there do not have
external network connectivity.
Examining make-dist, it seems very much to be downloading Boost and
including it in the tarball, but not in a way that convinces Ceph to not
download it again during the actual build.
There are two problems that I can see:
First, make-dist makes its final tarball by merging three tarballs into
one, and in the process ends up putting the boost code out-of-tree. This
is trivial to fix.
Second, even when I fix that, BuildBoost.cmake ignores it because of
this line:
if(EXISTS
"${PROJECT_SOURCE_DIR}/src/boost/libs/config/include/boost/config.hpp")
There simply is no such subdirectory "include" under
src/boost/libs/config so the EXISTS conditional always evaluates to
"false" and hence Boost always gets downloaded from the Internet:
https://github.com/ceph/ceph/blob/master/cmake/modules/BuildBoost.cmake#L78-L85
Any hints will be greatly appreciated! It doesn't seem right that
make-dist goes to the trouble of downloading Boost and including it in
the tarball, only to have to re-download it at build time.
Nathan
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