lang/python27 and threads option

[wen heping]

It is caused by building libpython without -pthread, I shall try to fix it.

I am wondering why there is not a run error when "python -m threading"

wen

2011/6/28 Rainer Hurling <rhurlin at gwdg.de>:
> (Crossposting to python@, because I am not sure which is the right list in
> this case. Sorry, if this is not OK)
>
> Yesterday math/saga got updated. Now there is a new option for python
> bindings to the SAGA GIS api. This worked well with version 2.7.1 of
> lang/python27 until yesterday.
>
> I tried to build math/saga after upgrading to Python version 2.7.2 from
> today, but it stops in the configure. As far as I understand the math/saga
> configure script has a problem with the 'consistency check of all components
> of python development environment', see config.log (line 1347).
>
> -----------------------------------------
> configure:16297: checking consistency of all components of python
> development environment
> configure:16323: cc -o conftest -O2 -pipe -I/usr/local/include
> -fno-strict-aliasing  -I/usr/local/include/python2.7  -L/usr/local/lib
> conftest.c  -L/usr/local/lib/python2.7/config -lpython2.7
> -Wl,--export-dynamic  -lutil >&5
> /usr/local/lib/libpython2.7.so: undefined reference to `pthread_create'
> -----------------------------------------
>
> This does not happen, if Python 2.7.2 was build _without_ option 'THREADS'.
> Then SAGA GIS builds fine.
>
>
> Listing the dynamic object dependencies of the Python library, there is a
> vital difference between Python 2.7.1 and 2.7.2.
>
> Python 2.7.1, build _with_ option 'THREADS':
> ldd /usr/local/lib/libpython2.7.so
> /usr/local/lib/libpython2.7.so:
>        libutil.so.9 => /lib/libutil.so.9 (0x413ac000)
>        libm.so.5 => /lib/libm.so.5 (0x415bd000)
>        libthr.so.3 => /lib/libthr.so.3 (0x417de000)
>        libc.so.7 => /lib/libc.so.7 (0x4084a000)
>
> Python 2.7.2, build _with_ option 'THREADS':
> ldd /usr/local/lib/libpython2.7.so
> /usr/local/lib/libpython2.7.so:
>        libutil.so.9 => /lib/libutil.so.9 (0x413ac000)
>        libm.so.5 => /lib/libm.so.5 (0x415bd000)
>        libc.so.7 => /lib/libc.so.7 (0x4084a000)
>
> It seems that Python does not include libthr.so.3 in version 2.7.2. Is this
> intentional? Is there any other way to use the threaded version of Python
> now?
>
> Any help would be really appreciated.
>
> Thanks in advance,
> Rainer Hurling
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