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Re: [HTCondor-users] virtualenv, pip and htcondor (python)

On Dec 10, 2016, at 10:13 AM, L Kreczko <L.Kreczko@xxxxxxxxxxxxx> wrote:

Hi John, hi Brian,

Thanks for the answers. After a bit of fiddling I ended up with this set:

However, since I turn off KRB5 an error occurs:
/home/vagrant/workspace/htcondor/src/condor_io/condor_auth_ssl.cpp: In static member function âstatic bool Condor_Auth_SSL::Initialize()â:
/home/vagrant/workspace/htcondor/src/condor_io/condor_auth_ssl.cpp:107:7: error: âCondor_Auth_Kerberosâ has not been declared
  if ( Condor_Auth_Kerberos::Initialize() == false ||
src/condor_utils/CMakeFiles/condor_utils.dir/build.make:7152: recipe for target 'src/condor_utils/CMakeFiles/condor_utils.dir/__/condor_io/condor_auth_ssl.cpp.o' failed.

If I allow for KRB, the compilation fails at DAG:
[ 74%] Linking CXX executable condor_submit_dag
[ 74%] Built target condor_submit_dag
Scanning dependencies of target condor_dagman_metrics_reporter
[ 74%] Building CXX object src/condor_dagman/CMakeFiles/condor_dagman_metrics_reporter.dir/condor_dagman_metrics_reporter.cpp.o
[ 74%] Building CXX object src/condor_dagman/CMakeFiles/condor_dagman_metrics_reporter.dir/__/condor_utils/condor_version.cpp.o
[ 74%] Linking CXX executable condor_dagman_metrics_reporter
//lib/x86_64-linux-gnu/libssl.so.1.0.0: undefined reference to `SHA224_Init@xxxxxxxxxxxxx'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libcurl.so: undefined reference to `ENGINE_get_id@xxxxxxxxxxxxx'
+ many more 'undefined reference'.

Is there a way to disable DAG? Essentially, I just want the python-bindings :)

And just as I said that, I 
cd src/python-bindings/

and end up with htcondor.so and classad.so!
Well, that was easy ;)

I think you can just name the specific cmake targets:

make htcondor classad

and that should build the python modules plus dependencies.

Starting from fresh, the python-bindings also compile
 - src/classad
 - src/condor_utils

Sounds about right.

Next step is to make the compiled libraries work with the installed ones (e.g import the module):
python -c 'import htcondor'Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: /home/vagrant/workspace/htcondor/src/python-bindings/libcondor_utils_8_5_9.so: undefined symbol: _ZN7classad19ClassAdJsonUnParser7UnparseERNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPKNS_7ClassAdERKSt3setIS6_NS_12CaseIgnLTStrESaIS6_EE

I think this is perhaps a dynamic loader issue -- you might need to explicitly set $LD_LIBRARY_PATH for python, whereas RPATH works

BTW: 'import classad' works out-of-the-box'

For the setup.py there are two approaches:
Not experienced with either, suggestions are welcome.

I don't think there's any way to get the C++ extension working: there's just too much condor code to replicate the build in condor.  I think (2) is the way too go.