Hello list!
I'm trying to compile my Python extension which uses APR library. I could do
this on Linux, but on MS Windows... well, I really know very little about MS
tool-chain and how things work, so would appreciate some help.
I followed the instructions in the README in the project and compiled the
library using:
cd apr
nmake -f Makefile.win
Later, in Release directory I discovered libapr-1.lib which, as far as I
understand is analogous to an *.a file (archive), and is used by MSVC to look
up symbol definitions.
I then dropped this file in the directory I configured the linker to look into.
Here's the complete command line given to the linker:
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\link.exe
/nologo
/INCREMENTAL:NO
/LTCG
/DLL
/MANIFEST:EMBED,ID=2
/MANIFESTUAC:NO
/LIBPATH:c:\dev\protopy\lib/apr
/LIBPATH:c:\bin\python\Libs
/LIBPATH:c:\dev\protopy\.venv\libs
/LIBPATH:c:\dev\protopy\.venv\PCbuild\amd64
"/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\LIB\amd64"
"/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.10240.0\ucrt\x64"
"/LIBPATH:C:\Program Files (x86)\Windows Kits\8.1\lib\winv6.3\um\x64"
apr-1.lib
/EXPORT:PyInit_wrapped
build\temp.win-amd64-3.6\Release\protopy/lib/descriptors.obj
build\temp.win-amd64-3.6\Release\protopy/lib/binparser.obj
build\temp.win-amd64-3.6\Release\protopy/lib/defparser.obj
build\temp.win-amd64-3.6\Release\protopy/lib/protopy.lex.obj
build\temp.win-amd64-3.6\Release\protopy/lib/protopy.tab.obj
build\temp.win-amd64-3.6\Release\protopy/lib/pyhelpers.obj
build\temp.win-amd64-3.6\Release\protopy/lib/list.obj
build\temp.win-amd64-3.6\Release\protopy/wrapper.obj
/OUT:build\lib.win-amd64-3.6\protopy\wrapped.cp36-win_amd64.pyd
/IMPLIB:build\temp.win-amd64-3.6\Release\protopy/lib\wrapped.cp36-win_amd64.lib
formatted for readability.
The error I'm getting:
error LNK2001: unresolved external symbol \
__imp_apr_hash_set
After running dumpbin.exe on libapr-1.lib, I can see that the symbols it
exports are all named __imp__apr_something, while when liking with my code it
looks for __imp_apr_something (notice single vs double underscores).
What am I doing wrong? Why do the names differ?
Thanks!
Oleg
PS. I also posted this question to Stack Overflow:
https://stackoverflow.com/q/50930010/5691066
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