Re: [Boost-build] Building boost with Python 3.5 links to 3.6

Subject: Re: [Boost-build] Building boost with Python 3.5 links to 3.6
From: Edward Diener (eldiener_at_[hidden])
Date: 2017-09-25 22:35:28

On 9/25/2017 4:04 PM, Robert via Boost-build wrote:
> On 9/22/2017 6:58 AM, Szőts Ákos via Boost-build wrote:
>> Dear Boost Developers,
>>
>> I'd like to compile Boost 1.65.1 with Python 3.5 support on Windows 
>> with VS 2015. Python is installed from x64 Anaconda distribution into 
>> a so called python virtual environment (along with v3.6 in the default 
>> environment).
>>
>> I created the following user-config.jam in tools/build/src:

The user-config.jam file usually is found in the HOME directory on Linux 
and Windows.

>>
>> Â Â using python
>> Â Â  Â  Â  : 3.5 Â # Version
>>        : C:\\ProgramData\\Anaconda3\\envs\\python-35\\python.exe  # 
>> Interpreter
>>        : C:\\ProgramData\\Anaconda3\\envs\\python-35\\include  # 
>> include directory
>>        : C:\\ProgramData\\Anaconda3\\envs\\python-35\\libs  # link 
>> libraries
>> Â Â  Â  Â  : <address-model>64 Â # conditions
>> Â Â  Â  Â  ;
> 
> I am not sure you can separate the sections on a line by line basis. 
> Someone who knows b2 much better than I can confirm.

Yes, you can have the sections on different lines. It is perfectly valid 
bjam syntax.

>Â  Regardless, I use 
> Python 2.7 via user-config.jam.  The line is:
> 
> using python : 2.7 : C:\\Python27 : C:\\Python27\\include : 
> C:\\Python27\\libs ;
> 
> I then have the output files between Boost, Python and the compiler 
> named similarly to:
> 
> boost_python-vc141-mt-1_65_1.lib
> 
> --Robert
> 
> 
>> After executing ./bootstrap.bat (with no options given to it), I call 
>> the compiled b2.exe the following way:
>>
>>      b2.exe -j 16 --debug-configuration  \
>> Â Â  Â  Â  --prefix=<my_boost_lib_dir> -sBOOST_ROOT=<my_boost_dir> \
>> Â Â  Â  Â  threading=multi variant=debug,release link=static 
>> runtime-link=static \
>> Â Â  Â  Â  address-model=64 optimization=speed toolset=msvc \
>>        --with-python  <--with-[...]> \
>> Â Â  Â  Â  install
>> My problem is the resulting .lib libraries somehow contain references 
>> to python36.lib (and not to python35.lib):
>> $> dumpbin.exe /directives libboost_python3-vc140-mt-s-1_65_1.lib | 
>> findstr python3
>> Â Â  Â /DEFAULTLIB:python36.lib
>> Â Â  Â /DEFAULTLIB:python36.lib
>> Â Â  Â /DEFAULTLIB:python36.lib
>> Â Â  Â /DEFAULTLIB:python36.lib
>> Â Â  Â /DEFAULTLIB:python36.lib
>> Â Â  Â [...]
>>
>> b2 outputs the following:
>> [python-cfg] Configuring python...
>> [python-cfg] Â  user-specified version: "3.5"
>> [python-cfg] Â  user-specified cmd-or-prefix: 
>> "C:\ProgramData\Anaconda3\envs\python-35\python.exe"
>> [python-cfg] Â  user-specified includes: 
>> "C:\ProgramData\Anaconda3\envs\python-35\include"
>> [python-cfg] Â  user-specified libraries: 
>> "C:\ProgramData\Anaconda3\envs\python-35\libs"
>> [python-cfg] Â  user-specified condition: "<address-model>64"
>> [python-cfg] Checking interpreter command 
>> "C:\ProgramData\Anaconda3\envs\python-35\python.exe"...
>> [python-cfg] running command 'DIR /-C /A:S 
>> "C:\ProgramData\Anaconda3\envs\python-35\python.exe" 2>&1'
>> [python-cfg] running command 
>> 'C:\ProgramData\Anaconda3\envs\python-35\python.exe -c "from sys 
>> import *; 
>> print('version=%d.%d\nplatform=%s\nprefix=%s\nexec_prefix=%s\nexecutable=%s' 
>> % 
>> (version_info[0],version_info[1],platform,prefix,exec_prefix,executable))" 
>> 2>&1'
>> [python-cfg] ...requested configuration matched!
>> [python-cfg] Details of this Python configuration:
>> [python-cfg] Â  interpreter command: 
>> "C:\ProgramData\Anaconda3\envs\python-35\python.exe"
>> [python-cfg] Â  include path: 
>> "C:\ProgramData\Anaconda3\envs\python-35\include"
>> [python-cfg] Â  library path: 
>> "C:\ProgramData\Anaconda3\envs\python-35\libs"
>> [python-cfg] Â  DLL search path: "C:\ProgramData\Anaconda3\envs\python-35"
>> [python-cfg] Checking for NumPy...
>> [python-cfg] running command 
>> 'C:\ProgramData\Anaconda3\envs\python-35\python.exe -c "import sys; 
>> sys.stderr = sys.stdout; import numpy; print(numpy.get_include())"'
>> [python-cfg] NumPy enabled
>>
>> Do you have any idea how to enable linking to Python 3.5?
>>
>> Thank you very much!
>>
>> All the best,
>>
>> Ákos