bjam "python=X.X" option not recognized anymore

[boost@…]

In Boost 1.62, specifying "python=3.5" is not working anymore: Always the first python entry in user-config.jam is selected. It seems to be related to a change in tools/build/src/tools/python.jam (line 905 ff), which appeared between 1.61.0 and 1.62.0.

[barthalion]

It also means that it makes it impossible (or at least hard for me) to build libboost_python and libboost_python3 at one run. While both files are present, in fact they are both python2 bindings.

[Adam Majer <amajer@…>]

I can confirm this. This regression is caused by

commit 2059618861eb25ae2ed3f1b6ebee8609365cbed9
Author: Rene Rivera <grafikrobot@gmail.com>
Date:   Sat Jul 16 15:53:30 2016 -0500

Reverting it fixes this problem. Another location for this patch is in development branch at,

​https://github.com/boostorg/build/commit/78ffbe094400d277627b2c19ceb182d637b8baca

[Fabian Wenzel <boost@…>]

May this please be picked up at some time? Version 1.63 still contains this bug.

[Mateusz Loskot]

Here is similar bug report in GitHub issues: ​It no longer seems possible to build against both python2 and python3 #163