Re: [Openexr-devel] pyilmbase 2.2.0 build - boost::python test program failure

[f.michal]

I just realised I replied directly to Peter instead to the list. So again, here's my post with solution:


I turned out I needed to rebuild python with --enable-shared configure path.
Otherwise I was missing some default system libs. Example from config.log:

configure:16122: checking for boost::python
configure:16168: g++ -o conftest -g -O2  -I/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/install/include/python2.7 -g -O2  -I/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/install/include/python2.7   -L/home/mfratczak/dev/libs/OpenEXR/2.2.0/install3/lib -L/usr/local/lib -L/home/mfratczak/dev/libs/boost/boost_1_61_0/stage/lib -L/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/install/lib  -L/home/mfratczak/dev/libs/OpenEXR/2.2.0/install3/lib -L/usr/local/lib -L/home/mfratczak/dev/libs/boost/boost_1_61_0/stage/lib -L/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/install/lib conftest.cpp -ldl -lpthread -lpython2.7 -lboost_python -ldl -lpthread -lpython2.7 >&5
/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/install/lib/libpython2.7.a(posixmodule.o): In function `posix_tmpnam':
/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/./Modules/posixmodule.c:7631: warning: the use of `tmpnam_r' is dangerous, better use `mkstemp'
/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/install/lib/libpython2.7.a(posixmodule.o): In function `posix_tempnam':
/home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/./Modules/posixmodule.c:7578: warning: the use of `tempnam' is dangerous, better use `mkstemp'
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: /home/mfratczak/dev/projs/python/Python-2.7.12_gcc482/install/lib/libpython2.7.a(posixmodule.o): undefined reference to symbol 'forkpty@@GLIBC_2.2.5'
/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/ld: note: 'forkpty@@GLIBC_2.2.5' is defined in DSO /lib64/libutil.so.1 so try adding it to the linker command line
/lib64/libutil.so.1: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
configure:16172: $? = 1
configure: program exited with status 1


So, all seems to be OK now.
Are there any other python flags relevant for us (maya/exr users)? I think I saw some other, possibly enabling utf support AFAIR...

thanks!
-michal


W dniu 2016-10-06 o 02:36, Peter Hillman pisze:

The config.log file should give more detail. It's very verbose, so search for "boost::python" related entries in it - somewhere around one of those you should get the actual error the compiler gave when trying to link the test program.

My guess would be that boost-lib-dir or boost-python-libname are incorrect, or there's some incompatibility between the pyilmbase compile and boost or python. It's also possible it's somehow muddling up two different boost or python builds on your system. Again, the config.log file should give the fully resolved include and library paths it attempted to use for compiling and linking the test program.

On 05/10/16 21:39, f.michal wrote:

Hello !

I'm trying to build pyilmbase 2.2.0 against custom builds of boost and python, and I fail with this error message:

checking for boost::python... no
*** Could not run the boost::python test program, checking why...
*** The boost::python test program could be compiled, but could not be dynamically.
*** or statically linked.

I have LD_LIBRARY_PATH pointing where it should (boost/stage/lib, python libs etc.)

I also tried ./configure with these options:

      --with-boost-include-dir
      --with-boost-lib-dir
      --with-boost-python-libname

...nothing helps. I've seen a similar problem post but didn't find solution. Also I looked into configure script but I got hearth attack :)

Can I do anything to push this or help debug ?

I'm under CentOS 6.5 and building with Red Hat DTS 2.1 (g++ v4.8.2) - as required by Maya2017 docs...

thanks

-michal

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