Re: [boost] doubts about python3 support

Petr Machata wrote:

Neal Becker writes:

...

What I'd like is to build both python2 and python3 from the same source tree, installing the final shared libs into the same destination dir. Right now I have 2 different source trees, and build switching the one line in user- config.jam.

In Fedora, I add the Python 3 like you do, and then additionally add e.g. python=2.7 to the b2 command line. This then builds a libboost_python.so vs. Python 2 and libboost_python3 vs. Python 3.

My theory is that when Python 2 to Python 3 transition is eventually done, you still want to build libbost_python (sans 3), because lots of apps will still use -lboost_python. But by that time it will be desirable to have libboost_python built vs. Python 3.

Thanks, PM

I'm not quite clear on your procedure. Adding python=2.7 to command line(having modified user-config.jam as described): bjam -d+2 -j8 cxxflags='-march=native -Wno-unused-local-typedefs' -sHAVE_ICU=1 - sEXPAT_INCLUDE=/usr -sEXPAT_LIBPATH=/usr/lib64 --layout=tagged threading=single,multi link=shared stage python=2.7 /usr/local/src/boost_1_54_0.python3/tools/build/v2/build/feature.jam:493: in feature.validate-value-string from module feature error: "2.7" is not a known value of feature <python> error: legal values: "3.3" /usr/local/src/boost_1_54_0.python3/tools/build/v2/build/property.jam:273: in validate1 from module property /usr/local/src/boost_1_54_0.python3/tools/build/v2/build/property.jam:299: in property.validate from module property /usr/local/src/boost_1_54_0.python3/tools/build/v2/build/build-request.jam:216: in convert-command-line-element from module build-request /usr/local/src/boost_1_54_0.python3/tools/build/v2/build/build-request.jam:154: in build-request.from-command-line from module build-request /usr/local/src/boost_1_54_0.python3/tools/build/v2/build-system.jam:583: in load from module build-system /usr/local/src/boost_1_54_0.python3/tools/build/v2/kernel/modules.jam:289: in import from module modules /usr/local/src/boost_1_54_0.python3/tools/build/v2/kernel/bootstrap.jam:139: in boost-build from module /usr/local/src/boost_1_54_0.python3/boost-build.jam:17: in module scope from module