Re: [boost] [python] Building and Testing needs to be updated for modular-boost

Subject: Re: [boost] [python] Building and Testing needs to be updated for modular-boost
From: Edward Diener (eldiener_at_[hidden])
Date: 2014-08-05 19:03:08

On 8/5/2014 3:12 AM, Jürgen Hunold wrote:
> Hi Edward,
>
> Am Montag, 4. August 2014, 11:55:12 schrieb Edward Diener:
>> On 8/2/2014 5:31 AM, Jürgen Hunold wrote:
>>> It even needs more caretaking. After fixing boost-build.jam to point to
>>> the new build system location, I had to tweak the example itself. Full
>>> patch to get things compiling again attached.
>>
>> With the example that you tweaked I get:
>>> embedding.cpp: In function 'void exec_test()':
>>> embedding.cpp:56:48: error: 'PyInit_embedded_hello' was not declared in
>>> this scope>
>>>     if (PyImport_AppendInittab("embedded_hello", PyInit_embedded_hello) ==
>>>     -1)
>>
>> It appears that the change you made in embedding.cpp is not correct, or
>> I am doing something wrong.
>
> Which Python do you use? I have Python-3.4 installed, this would be one
> possible reason. Does the example compile without my patch on your system?

The patch for the boost-build.jam file without the change you specified 
in embedding.cpp works with Python-2.7.8 32 bit.

The patch for the boost-build.jam file with the change you specified in 
embedding.cpp works produces this error with Python-2.7.8 32 bit:

> embedding.cpp: In function 'void exec_test()':
> embedding.cpp:56:48: error: 'PyInit_embedded_hello' was not declared in this scope
>    if (PyImport_AppendInittab("embedded_hello", PyInit_embedded_hello) == -1)

The patch for the boost-build.jam file without the change you specified 
in embedding.cpp produces these errors with Python-3.4.1 32 bit:

> gcc.link.dll bin\gcc-mingw-4.8.1\debug\libextending.dll.a
> bin\gcc-mingw-4.8.1\debug\extending.o: In function `PyInit_extending':
> C:\Programming\VersionControl\modular-boost\libs\python\example\quickstart/extending.cpp:29: undefined reference to `_imp___ZN5boost6python6detail11init_moduleER11PyModuleDefPFvvE'
> collect2.exe: error: ld returned 1 exit status
>
>     "g++" -L"C:\Utilities\Python341_32\libs" -Wl,-R -Wl,"C:\Utilities\Python341_32" -Wl,-R -Wl,"C:\Utilities\Python341_32\libs" "-Wl,--out-implib,bin\gcc-mingw-4.8.1\debug\libextending.dll.a" -o "bin\gcc-mingw-4.8.1\debug\extending.pyd"  -shared -Wl,--start-group "bin\gcc-mingw-4.8.1\debug\extending.o" "..\..\..\..\bin.v2\libs\python\build\gcc-mingw-4.8.1\debug\libboost_python-mgw48-d-1_56.dll.a"  -Wl,-Bstatic  -Wl,-Bdynamic -lpython34 -Wl,--end-group -g
>
> ...failed gcc.link.dll bin\gcc-mingw-4.8.1\debug\libextending.dll.a bin\gcc-mingw-4.8.1\debug\extending.pyd...

> embedding.cpp: In function 'void exec_test()':
> embedding.cpp:57:48: error: 'initembedded_hello' was not declared in this scope
>    if (PyImport_AppendInittab("embedded_hello", initembedded_hello) == -1)
>                                                 ^
>
>     "g++"  -ftemplate-depth-128 -O0 -fno-inline -Wall -g    -I"..\..\..\.." -I"C:\Utilities\Python341_32\Include" -c -o "bin\gcc-mingw-4.8.1\debug\embedding.o" "embedding.cpp"
>
> ...failed gcc.compile.c++ bin\gcc-mingw-4.8.1\debug\embedding.o...

The patch for the boost-build.jam file with the change you specified in 
embedding.cpp produces these errors with Python-3.4.1 32 bit:

> gcc.link.dll bin\gcc-mingw-4.8.1\debug\libextending.dll.a
> bin\gcc-mingw-4.8.1\debug\extending.o: In function `PyInit_extending':
> C:\Programming\VersionControl\modular-boost\libs\python\example\quickstart/extending.cpp:29: undefined reference to `_imp___ZN5boost6python6detail11init_moduleER11PyModuleDefPFvvE'
> collect2.exe: error: ld returned 1 exit status
>
>     "g++" -L"C:\Utilities\Python341_32\libs" -Wl,-R -Wl,"C:\Utilities\Python341_32" -Wl,-R -Wl,"C:\Utilities\Python341_32\libs" "-Wl,--out-implib,bin\gcc-mingw-4.8.1\debug\libextending.dll.a" -o "bin\gcc-mingw-4.8.1\debug\extending.pyd"  -shared -Wl,--start-group "bin\gcc-mingw-4.8.1\debug\extending.o" "..\..\..\..\bin.v2\libs\python\build\gcc-mingw-4.8.1\debug\libboost_python-mgw48-d-1_56.dll.a"  -Wl,-Bstatic  -Wl,-Bdynamic -lpython34 -Wl,--end-group -g
>
> ...failed gcc.link.dll bin\gcc-mingw-4.8.1\debug\libextending.dll.a bin\gcc-mingw-4.8.1\debug\extending.pyd...

> gcc.link bin\gcc-mingw-4.8.1\debug\embedding.exe
> bin\gcc-mingw-4.8.1\debug\embedding.o: In function `PyInit_embedded_hello':
> C:\Programming\VersionControl\modular-boost\libs\python\example\quickstart/embedding.cpp:45: undefined reference to `_imp___ZN5boost6python6detail11init_moduleER11PyModuleDefPFvvE'
> collect2.exe: error: ld returned 1 exit status
>
>     "g++" -L"C:\Utilities\Python341_32\libs" -Wl,-R -Wl,"C:\Programming\VersionControl\modular-boost\bin.v2\libs\python\build\gcc-mingw-4.8.1\debug" -Wl,-R -Wl,"C:\Utilities\Python341_32" -Wl,-R -Wl,"C:\Utilities\Python341_32\libs" -Wl,-rpath-link -Wl,"C:\Programming\VersionControl\modular-boost\bin.v2\libs\python\build\gcc-mingw-4.8.1\debug" -o "bin\gcc-mingw-4.8.1\debug\embedding.exe" -Wl,--start-group "bin\gcc-mingw-4.8.1\debug\embedding.o" "..\..\..\..\bin.v2\libs\python\build\gcc-mingw-4.8.1\debug\libboost_python-mgw48-d-1_56.dll.a"  -Wl,-Bstatic  -Wl,-Bdynamic -lpython34 -Wl,--end-group -g
>
> ...failed gcc.link bin\gcc-mingw-4.8.1\debug\embedding.exe...

Hopefully these will give you enough to fix this problem in Boost 
Python. I am pretty sure I have done everything correctly. I also have 
64-bit versions of Python 2.7.8 and Python 3.4.1 but I am not sure how I 
test that. Do I have to add some sort of address model parameter to the 
bjam line ?