[SRU] Backport boost_python3 fix for cmake

[Oleg]

Currenlty using boost_python3 is impossible: https://github.com/boostorg/python/issues/204

It was fixed in cmake 3.11 but bionic uses 3.10. Could you backport fix?

Patch: https://gitlab.kitware.com/cmake/cmake/merge_requests/201/diffs

[Oleg (o01eg)]

I've manually applied this patch to FindBoost.cmake but it doesn't solve issue because cmake doesn't found libraries for python3 component.

The only working component is python-py36:

//Boost python-py36 library (debug)
Boost_PYTHON-PY36_LIBRARY_DEBUG:FILEPATH=/usr/lib/x86_64-linux-gnu/libboost_python-py36.so

//Boost python-py36 library (release)
Boost_PYTHON-PY36_LIBRARY_RELEASE:FILEPATH=/usr/lib/x86_64-linux-gnu/libboost_python-py36.so

So I suppose patch should add next line:

set(_Boost_PYTHON_PY36_HEADERS "${_Boost_PYTHON_HEADERS}")

[Oleg (o01eg)]

Also looks like upstream fully change boost python handling in 3.11 https://gitlab.kitware.com/cmake/cmake/blob/v3.11.4/Modules/FindBoost.cmake

[Gianfranco Costamagna (costamagnagianfranco)]

Oleg, can you please provide a simple test case to verify a fix?
also, see the bug template
https://wiki.ubuntu.com/StableReleaseUpdates#SRU_Bug_Template

[Gianfranco Costamagna (costamagnagianfranco)]

Once you have updated it please set the status back to new
I uploaded to cmake test builds:
Version: 3.10.2-1ubuntu2.18.04.2 on
https://launchpad.net/%7Ecostamagnagianfranco/+archive/ubuntu/costamagnagianfranco-ppa/
this has only the line added

Version: 3.10.2-1ubuntu2.18.04.3 on
https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/locutusofborg-ppa
That one has also the FindBoost.cmake updated.

[Steve Langasek (vorlon)]

An upload of cmake to bionic-proposed has been rejected from the upload queue for the following reason: "request of Gianfranco; no testcase in bug".

[Launchpad Janitor (janitor)]

[Expired for cmake (Ubuntu) because there has been no activity for 60 days.]