Matlab 2017b - Ubuntu 18.04 - Tutorial fails

[NicolasRiel]

Hi everyone,

I was able to install NLopt with matlab 2017b using this command:

sudo cmake .. -DMatlab_ROOT_DIR=/home/seph/MATLAB/R2017b/

However, when I try to run the example from the tutorial I get the following error message.

I was wondering if anyone had an idea on how to fix it?

Cheers!

_Invalid MEX-file '/home/seph/MATLAB/R2017b/bin/nlopt_optimize.mexa64':
Missing symbol '_ZNSt13runtime_errorC1EPKc' required by '/usr/local/lib/libnlopt.so.0->/home/seph/MATLAB/R2017b/bin/nlopt_optimize.mexa64'
Missing symbol '_ZNSt13runtime_errorC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE' required by
'/usr/local/lib/libnlopt.so.0->/home/seph/MATLAB/R2017b/bin/nlopt_optimize.mexa64'
Missing symbol '_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm' required by
'/usr/local/lib/libnlopt.so.0->/home/seph/MATLAB/R2017b/bin/nlopt_optimize.mexa64'
Missing symbol '_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructEmc' required by
'/usr/local/lib/libnlopt.so.0->/home/seph/MATLAB/R2017b/bin/nlopt_optimize.mexa64'
Missing symbol '_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_appendEPKcm' required by
'/usr/local/lib/libnlopt.so.0->/home/seph/MATLAB/R2017b/bin/nlopt_optimize.mexa64'
Missing symbol 'ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_createERmm' required by
'/usr/local/lib/libnlopt.so.0->/home/seph/MATLAB/R2017b/bin/nlopt_optimize.mexa64'.

Here is the config log:

-- The C compiler identification is GNU 7.4.0
-- The CXX compiler identification is GNU 7.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- NLopt version 2.6.1
-- Looking for dlfcn.h
-- Looking for dlfcn.h - found
-- Looking for getopt.h
-- Looking for getopt.h - found
-- Looking for unistd.h
-- Looking for unistd.h - found
-- Looking for string.h
-- Looking for string.h - found
-- Looking for strings.h
-- Looking for strings.h - found
-- Looking for inttypes.h
-- Looking for inttypes.h - found
-- Looking for memory.h
-- Looking for memory.h - found
-- Looking for stdlib.h
-- Looking for stdlib.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for time.h
-- Looking for time.h - found
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for sys/stat.h
-- Looking for sys/stat.h - found
-- Looking for sys/time.h
-- Looking for sys/time.h - found
-- Looking for getpid
-- Looking for getpid - found
-- Looking for syscall
-- Looking for syscall - found
-- Looking for isinf
-- Looking for isinf - found
-- Looking for isnan
-- Looking for isnan - found
-- Looking for gettimeofday
-- Looking for gettimeofday - found
-- Looking for qsort_r
-- Looking for qsort_r - found
-- Looking for time
-- Looking for time - found
-- Looking for copysign
-- Looking for copysign - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of uint32_t
-- Check size of uint32_t - done
-- Check size of unsigned int
-- Check size of unsigned int - done
-- Check size of unsigned long
-- Check size of unsigned long - done
-- Looking for sqrt in m
-- Looking for sqrt in m - found
-- Looking for fpclassify
-- Looking for fpclassify - TRUE
-- Performing Test HAVE_THREAD_LOCAL_STORAGE
-- Performing Test HAVE_THREAD_LOCAL_STORAGE - Success
-- Performing Test HAVE_THREAD_LOCAL_STORAGE
-- Performing Test HAVE_THREAD_LOCAL_STORAGE - Failed
-- Looking for __cplusplus
-- Looking for __cplusplus - found
-- Performing Test SUPPORTS_STDCXX11
-- Performing Test SUPPORTS_STDCXX11 - Success
-- Found PythonInterp: /usr/bin/python (found version "2.7.15")
-- Could NOT find PythonLibs (missing: PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS)
-- Could NOT find Guile (missing: GUILE_EXECUTABLE GUILE_ROOT_DIR GUILE_INCLUDE_DIRS GUILE_LIBRARIES)
-- Could NOT find SWIG (missing: SWIG_EXECUTABLE SWIG_DIR)
-- Could NOT find Octave (missing: OCTAVE_EXECUTABLE OCTAVE_ROOT_DIR OCTAVE_LIBRARIES)
-- Found Matlab: /home/seph/MATLAB/R2017b/extern/include (found version "9.3") found components: MX_LIBRARY
-- Performing Test HAS_MINUS_PTHREAD
-- Performing Test HAS_MINUS_PTHREAD - Success
-- Configuring done
-- Generating done

[jschueller]

maybe it's missing linking to libstdc++, and I dont remember if matlab extension is using c++, can you delete everything and post the full log of make VERBOSE=1 ?

[stevengj]

After #198, libnlopt is built with C++ by default, which might be breaking the Matlab plugin because our mex file ends with .c. Try passing -DNLOPT_CXX=Off to cmake.

I don't see an option in the mex documentation to compile a .c file using C++, so we may have to rename the file to do this.

[jschueller]

Could you try adding this line after matlab_add_mex in src/octave/CMakeLists.txt (like in #271) ?
set_target_properties (nlopt_optimize-mex PROPERTIES LINKER_LANGUAGE CXX)

[NicolasRiel]

Hi all, thank you for such fast answers !

As suggested by Steven, the following command when running cmake fixed my problem:
-DNLOPT_CXX=Off

Now it perfectly works !!

Thank you very much,

[jschueller]

Good, can you test the fix I'm proposing anyway ? That way you and others wont have to worry next time.

[NicolasRiel]

Hi jschueller,

I tried your fix i.e.
set_target_properties (nlopt_optimize-mex PROPERTIES LINKER_LANGUAGE CXX)

Unfortunately it did not work :(

[jschueller]

could you try this line instead, BEFORE the matlab_add_mex line ? :
set_source_files_properties (nlopt_optimize-mex.c PROPERTIES CPLUSPLUS ON)

[stevengj]

Closed by #272.