Something changed between 1.55 and 1.56 that causes shared libraries with python to not build correctly. Since there were no changes of substance to python in this period (same until now in master, however, this also applies to develop), I’m thinking that it is boost build that isn’t working correctly. I have been able to manually build a shared library with the exact same .cpp file using visual studio to build instead of boost build and it works fine.

This causes the quickstart example (the embedding part anyway) to fail on windows with msvc, it also causes two of the regression tests to fail [1][2]: builtin_converters and map_indexing_suite.

The error shows up as an ‘incompatible PDB format’ shown here (full build output at end):

msvc.link.dll bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pyd

Creating library bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb and object bin\msvc-8.0\debug\address-model-32\threading-multi\extending.exp

LINK : fatal error LNK1207: incompatible PDB format in 'F:\tmp\boost_1_58_0_x1\libs\python\example\quickstart\bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb'; delete and rebuild

call "C:\Users\or331c\AppData\Local\Temp\b2_msvc_8.0_vcvarsall_x86.cmd" >nul

link /NOLOGO /INCREMENTAL:NO /DLL /NOENTRY /DEBUG /MACHINE:X86 /MANIFEST /subsystem:console /out:"bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pyd" /IMPLIB:"bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb" /LIBPATH:"C:\Python27-32\libs" @"bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pyd.rsp"

if %ERRORLEVEL% NEQ 0 EXIT %ERRORLEVEL%

...failed msvc.link.dll bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pyd bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb...

I’ve found lots of examples of people who have tried boost python and failed with this [3][4], as it is a pretty important part of what boost python does.

Any thoughts as to what is causing this or how to fix?

Thanks,

Tom

[1] http://www.boost.org/development/tests/develop/developer/output/teeks99-08b-win2012R2-64on64-boost-bin-v2-libs-python-test-map_indexing_suite-test-msvc-9-0-dbg-adrs-mdl-64-thrd-mlt.html

[2] http://www.boost.org/development/tests/develop/developer/output/teeks99-08b-win2012R2-64on64-boost-bin-v2-libs-python-test-map_indexing_suite-test-msvc-9-0-dbg-adrs-mdl-64-thrd-mlt.html

[3] http://stackoverflow.com/questions/29053172/boost-python-quickstart-linker-errors

[4] http://stackoverflow.com/questions/29450634/compile-boost-python-tutorial-with-vs-2015-ctp-5-and-python-3-5a-on-windows-10-t

Full, example build output

F:\tmp\boost_1_58_0_x1\libs\python\example\quickstart>f:\tmp\boost_1_58_0_x1\b2.exe address-model=32 test_ext

Performing configuration checks

- 32-bit : yes (cached)

- arm : no (cached)

- mips1 : no (cached)

- power : no (cached)

- sparc : no (cached)

- x86 : yes (cached)

...patience...

...found 1921 targets...

...updating 9 targets...

common.mkdir bin\test_ext.test\msvc-8.0\debug\address-model-32

common.mkdir bin\test_ext.test\msvc-8.0\debug\address-model-32\threading-multi

common.mkdir bin\msvc-8.0\debug\address-model-32

common.mkdir bin\msvc-8.0\debug\address-model-32\threading-multi

compile-c-c++ bin\msvc-8.0\debug\address-model-32\threading-multi\extending.obj

extending.cpp

msvc.link.dll bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pyd

Creating library bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb and object bin\msvc-8.0\debug\address-model-32\threading-multi\extending.exp

LINK : fatal error LNK1207: incompatible PDB format in 'F:\tmp\boost_1_58_0_x1\libs\python\example\quickstart\bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb'; delete and rebuild

call "C:\Users\or331c\AppData\Local\Temp\b2_msvc_8.0_vcvarsall_x86.cmd" >nul

if %ERRORLEVEL% NEQ 0 EXIT %ERRORLEVEL%

...failed msvc.link.dll bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pyd bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb...

...removing bin\msvc-8.0\debug\address-model-32\threading-multi\extending.pdb

...skipped <pbin\test_ext.test\msvc-8.0\debug\address-model-32\threading-multi>test_ext for lack of <pbin\msvc-8.0\debug\address-model-32\threading-multi>extending.pyd...

...failed updating 2 targets...

...skipped 2 targets...

...updated 5 targets...