ImportError when compiling debug version

[Reza Housseini]

When compiling with the DEBUG=ON flag, I get the following error when launching yade:

File "./yade-2013-10-01.git-e7840c4", line 121, in <module>
    import yade
  File "/home/jaeg/code/yade/install/debug/lib/x86_64-linux-gnu/yade-2013-10-01.git-e7840c4/py/yade/__init__.py", line 65, in <module>
    import boot
ImportError: /home/jaeg/code/yade/install/debug/lib/x86_64-linux-gnu/yade-2013-10-01.git-e7840c4/libyade.so: undefined symbol: omp_get_max_threads

I explicitly added the -fopenmp flag and enabled OpenMP.

[Anton Gladky (gladky-anton)]

2013/10/3 Reza Housseini <email address hidden>:
> ImportError: /home/jaeg/code/yade/install/debug/lib/x86_64-linux-gnu/yade-2013-10-01.git-e7840c4/libyade.so: undefined symbol: omp_get_max_threads
>
> I explicitly added the -fopenmp flag and enabled OpenMP.

What you mean here?

If your compiler supports OpenMP, all necessary flags should be added
"automatically" through OpenMP_CXX_FLAGS variable [1]. You do not
need to add -fopenmp explicitly.

Need to look at the cmake-output from configuration-step. It should
definitely say you, what is missed.

[1] https://github.com/yade/trunk/blob/master/CMakeLists.txt#L126

[Reza Housseini (reza-housseini-3)]

That is the strange thing. My cmake output says it's there:

-- Found Qt4: /usr/bin/qmake (found version "4.8.1")
-- Version is set to 2013-10-01.git-e7840c4
-- GTS using gts-config /usr/bin/gts-config
-- Using GTS from /usr
-- Boost_VERSION: 104601
-- Boost_LIB_VERSION: 1_46_1
-- Boost_INCLUDE_DIRS: /usr/include
-- Boost_LIBRARIES: /usr/lib/libboost_python.so/usr/lib/libboost_thread-mt.so/usr/lib/libboost_date_time-mt.so/usr/lib/libboost_filesystem-mt.so/usr/lib/libboost_iostreams-mt.so/usr/lib/libboost_regex-mt.so/usr/lib/libboost_serialization-mt.so
-- Found Eigen3
-- Found VTK
-- Found OpenMP
-- GTS using gts-config /usr/bin/gts-config
-- Using GTS from /usr
-- Found GTS
-- Found Qt4: /usr/bin/qmake (found version "4.8.1")
-- Found QGLViewer: /usr/lib/x86_64-linux-gnu/libqglviewer-qt4.so
-- Found GUI-LIBS
-- GMP libs: /usr/lib/x86_64-linux-gnu/libgmp.so /usr/lib/x86_64-linux-gnu/libgmpxx.so
-- GMP libs: /usr/lib/x86_64-linux-gnu/libgmp.so /usr/lib/x86_64-linux-gnu/libgmpxx.so
-- Found CGAL
-- Found Cholmod
-- Found OpenBlas
-- Found Metis
-- Found GL2PS
Yade will be installed to /home/jaeg/code/yade/install/debug
-- Suffix is set to -2013-10-01.git-e7840c4
-- LIBRARY_OUTPUT_PATH is set to lib/x86_64-linux-gnu
-- runtimePREFIX is set to /home/jaeg/code/yade/install/debug
-- Use system gts version
-- Use system minieigen version
-- ===========================================================
-- Yade configured with following features: Eigen3 VTK OpenMP GTS GUI CGAL PFVflow LinSolv GL2PS
-- Disabled features:
-- Debug build
-- ===========================================================
-- Configuring done
-- Generating done
-- Build files have been written to: /home/jaeg/code/yade/build/debug

Building the release version with openmp is no problem.

[Anton Gladky (gladky-anton)]

What operating system do you use? What do you type düring "cmake-step"?
Please, attach CmakaCache.txt, which is in your build-directory.

Anton

2013/10/4 Reza Housseini <email address hidden>:
> That is the strange thing. My cmake output says it's there:
>
> -- Found Qt4: /usr/bin/qmake (found version "4.8.1")
> -- Version is set to 2013-10-01.git-e7840c4
> -- GTS using gts-config /usr/bin/gts-config
> -- Using GTS from /usr
> -- Boost_VERSION: 104601
> -- Boost_LIB_VERSION: 1_46_1
> -- Boost_INCLUDE_DIRS: /usr/include
> -- Boost_LIBRARIES: /usr/lib/libboost_python.so/usr/lib/libboost_thread-mt.so/usr/lib/libboost_date_time-mt.so/usr/lib/libboost_filesystem-mt.so/usr/lib/libboost_iostreams-mt.so/usr/lib/libboost_regex-mt.so/usr/lib/libboost_serialization-mt.so
> -- Found Eigen3
> -- Found VTK
> -- Found OpenMP
> -- GTS using gts-config /usr/bin/gts-config
> -- Using GTS from /usr
> -- Found GTS
> -- Found Qt4: /usr/bin/qmake (found version "4.8.1")
> -- Found QGLViewer: /usr/lib/x86_64-linux-gnu/libqglviewer-qt4.so
> -- Found GUI-LIBS
> -- GMP libs: /usr/lib/x86_64-linux-gnu/libgmp.so /usr/lib/x86_64-linux-gnu/libgmpxx.so
> -- GMP libs: /usr/lib/x86_64-linux-gnu/libgmp.so /usr/lib/x86_64-linux-gnu/libgmpxx.so
> -- Found CGAL
> -- Found Cholmod
> -- Found OpenBlas
> -- Found Metis
> -- Found GL2PS
> Yade will be installed to /home/jaeg/code/yade/install/debug
> -- Suffix is set to -2013-10-01.git-e7840c4
> -- LIBRARY_OUTPUT_PATH is set to lib/x86_64-linux-gnu
> -- runtimePREFIX is set to /home/jaeg/code/yade/install/debug
> -- Use system gts version
> -- Use system minieigen version
> -- ===========================================================
> -- Yade configured with following features: Eigen3 VTK OpenMP GTS GUI CGAL PFVflow LinSolv GL2PS
> -- Disabled features:
> -- Debug build
> -- ===========================================================
> -- Configuring done
> -- Generating done
> -- Build files have been written to: /home/jaeg/code/yade/build/debug
>
> Building the release version with openmp is no problem.
>
> --
> You received this bug notification because you are subscribed to Yade.
> https://bugs.launchpad.net/bugs/1234682
>
> Title:
> ImportError when compiling debug version
>
> Status in Yet Another Dynamic Engine:
> New
>
> Bug description:
> When compiling with the DEBUG=ON flag, I get the following error when
> launching yade:
>
> File "./yade-2013-10-01.git-e7840c4", line 121, in <module>
> import yade
> File "/home/jaeg/code/yade/install/debug/lib/x86_64-linux-gnu/yade-2013-10-01.git-e7840c4/py/yade/__init__.py", line 65, in <module>
> import boot
> ImportError: /home/jaeg/code/yade/install/debug/lib/x86_64-linux-gnu/yade-2013-10-01.git-e7840c4/libyade.so: undefined symbol: omp_get_max_threads
>
> I explicitly added the -fopenmp flag and enabled OpenMP.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/yade/+bug/1234682/+subscriptions

[Reza Housseini (reza-housseini-3)]

I'm on Ubuntu. What do you mean with cmake-step?
Attached is my CMakeCache.txt

Reza

[Reza Housseini (reza-housseini-3)]

With a new checkout the problem didn't persist, therefore it's probably gone.