[Python-Dev] Unable to build regex module against Python 3.5 32-bit (original) (raw)

MRAB python at mrabarnett.plus.com
Tue May 26 01:34:35 CEST 2015

On 2015-05-25 22:59, Paul Moore wrote:

On 25 May 2015 at 21:06, MRAB <python at mrabarnett.plus.com> wrote:

As the subject says, I've been unable to build the regex module against Python 3.5b1 for 32-bit. MingGW says:

skipping incompatible .../libpython35.a when searching for

-lpython35

It builds without a problem against Python 3.5 for 64-bit.

Any ideas? Should I just wait until beta 2?

MinGW is (and always has been) only marginally supported, unfortunately. I'd rather it didn't break totally for 3.5, but I am anticipating some difficulties (there have been a lot of compiler-related changes with 3.5).

Could you raise a bug, including details of precisely how you tried to build the module (presumably https://pypi.python.org/pypi/regex/2015.05.10) and assign it to me? I'll try to take a look and reproduce the issue. With luck, it may be as simple as the wrong version of libpython35.a being picked up somewhere.

Just to check the obvious - you are using 32-bit Python 3.5b1 and a 32-bit Mingw to build the 32-bit version, and 64-bit Python 3.5b1 and a 64-bit Mingw to build the 64-bit one? (I.e., two installations of Python and two of Mingw)

I'm not sure what happened, but I'm now getting this for Python 3.5 (32-bit):

C:\Python35(32-bit)\libs/libpython35.a(dsxbs01290.o):(.idata$7+0x0): undefined reference to _head_C__build_cpython_PCBuild_win32_libpython35_a' C:\Python35(32-bit)\libs/libpython35.a(dsxbs00283.o):(.idata$7+0x0): undefined reference to _head_C__build_cpython_PCBuild_win32_libpython35_a' C:\Python35(32-bit)\libs/libpython35.a(dsxbs00291.o):(.idata$7+0x0): undefined reference to _head_C__build_cpython_PCBuild_win32_libpython35_a' C:\Python35(32-bit)\libs/libpython35.a(dsxbs00273.o):(.idata$7+0x0): undefined reference to _head_C__build_cpython_PCBuild_win32_libpython35_a' C:\Python35(32-bit)\libs/libpython35.a(dsxbs00255.o):(.idata$7+0x0): undefined reference to _head_C__build_cpython_PCBuild_win32_libpython35_a' C:\Python35(32-bit)\libs/libpython35.a(dsxbs01280.o):(.idata$7+0x0): more undefined references to _head_C__build_cpython_PCBuild_win32_libpython35_a' follow collect2: ld returned 1 exit status

All other builds, from Python 2.5 to Python 3.4, both 32-bit and 64-bit, and also Python 3.5 (64-bit), work.

The 32-bit Python says it's 32-bit and the 64-bit Python says it's 64-bit.

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C:

rem Compile for Python 3.5 (64-bit) [works] cd C:\MinGW64\bin "C:\MinGW64\bin\gcc.exe" -mdll -m64 -DMS_WIN64 -O2 -Wall -Wsign-compare -Wconversion -I"C:\Python35\include" -c "D:\projects\mrab-regex\regex_3\regex_regex_unicode.c" -o "D:\projects\mrab-regex\regex_3\Release(3.5)_regex_unicode.o" "C:\MinGW64\bin\gcc.exe" -mdll -m64 -DMS_WIN64 -O2 -Wall -Wsign-compare -Wconversion -I"C:\Python35\include" -c "D:\projects\mrab-regex\regex_3\regex_regex.c" -o "D:\projects\mrab-regex\regex_3\Release(3.5)_regex.o" "C:\MinGW64\bin\gcc.exe" -m64 -shared -s "D:\projects\mrab-regex\regex_3\Release(3.5)_regex_unicode.o" "D:\projects\mrab-regex\regex_3\Release(3.5)_regex.o" -L"C:\Python35\libs" -lpython35 -o "D:\projects\mrab-regex\regex_3\Release(3.5)_regex.pyd"

rem Compile for Python 3.5 (32-bit) [fails] cd C:\MinGW\bin "C:\MinGW\bin\gcc.exe" -mdll -m32 -O2 -Wall -Wsign-compare -Wconversion -I"C:\Python35(32-bit)\include" -c "D:\projects\mrab-regex\regex_3\regex_regex_unicode.c" -o "D:\projects\mrab-regex\regex_3\Release(3.5)(32-bit)_regex_unicode.o" "C:\MinGW\bin\gcc.exe" -mdll -m32 -O2 -Wall -Wsign-compare -Wconversion -I"C:\Python35(32-bit)\include" -c "D:\projects\mrab-regex\regex_3\regex_regex.c" -o "D:\projects\mrab-regex\regex_3\Release(3.5)(32-bit)_regex.o" "C:\MinGW\bin\gcc.exe" -m32 -shared -s "D:\projects\mrab-regex\regex_3\Release(3.5)(32-bit)_regex_unicode.o" "D:\projects\mrab-regex\regex_3\Release(3.5)(32-bit)_regex.o" -L"C:\Python35(32-bit)\libs" -lpython35 -o "D:\projects\mrab-regex\regex_3\Release(3.5)(32-bit)_regex.pyd"

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