Decision Optimization

Decision Optimization

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loading cpp libraries at Runtime

  • 1.  loading cpp libraries at Runtime

    Posted Thu August 16, 2012 11:35 AM

    Originally posted by: CplexUser1453


    Hello

    I would like to be able to run one java examples in opl_interfaces from the command line as a jar file :
    
java -jar <example>.jar


    I have no trouble executing the java examples thourgh eclipse but when I make a .jar file (through eclipse) and run it I get the following error :

    
No version in manifest (not in a jar?), trying 12.3 No version in manifest (not in a jar?), trying 12.3 Native code library failed to load: ensure the appropriate library (opl123.dll/.so) is in your path. Exceptions: no opl123 in java.library.path no opl_lang_wrap_cpp in java.library.path no opl_core_wrap_cpp_java123 in java.library.path no opl_core_wrap_cpp in java.library.path no cp_wrap_cpp_java123 in java.library.path no cp_wrap_cpp in java.library.path no concert_wrap_cpp_java123 in java.library.path no concert_wrap_cpp in java.library.path   Exception in thread 
"main" java.lang.ExceptionInInitializerError at ilog.concert.cppimpl.concert_wrap.setDebugWrappers(concert_wrap.java:34) at ilog.opl.IloOplFactory.setDebugMode(IloOplFactory.java:152) at mulprod.Mulprod.main(Mulprod.java:28) Caused by: java.lang.RuntimeException: Native code library failed to load: ensure the appropriate library (opl123.dll/.so) is in your path. Exceptions: no opl123 in java.library.path no opl_lang_wrap_cpp in java.library.path no opl_core_wrap_cpp_java123 in java.library.path no opl_core_wrap_cpp in java.library.path no cp_wrap_cpp_java123 in java.library.path no cp_wrap_cpp in java.library.path no concert_wrap_cpp_java123 in java.library.path no concert_wrap_cpp in java.library.path   at ilog.concert.IloJNILoader.loadJNI(IloJNILoader.java:80) at ilog.concert.cppimpl.concert_wrapJNI.<clinit>(concert_wrapJNI.java:15) ... 3 more


    here is the content of my system variables :
    
echo $PATH /usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/C88256/CPLEX12_4/opl/bin/x86-64_sles10_4.1/  echo $LD_LIBRARY_PATH /home/C88256/CPLEX12_4/opl/lib/:/home/C88256/CPLEX12_4/cplex/lib/


    and my java version :
    
java version 
"1.6.0_18" OpenJDK Runtime Environment (IcedTea6 1.8.13) (6b18-1.8.13-0+squeeze2) OpenJDK 64-Bit Server VM (build 14.0-b16, mixed mode)


    Having searched the forum, there are similar topics :
    • here removing the cplex.jar solved the problem
    • here, the question was left unanswered
    • here, the problem was a 32 bit JRE
    • here, not really sure what the deal was

    I did my best to follow the instructions in these topics but was not able to resolve the problem.
    I would be helpfull for any hint.
    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 2.  Re: loading cpp libraries at Runtime

    Posted Thu August 23, 2012 07:52 AM

    Originally posted by: SystemAdmin


    For example, carseq java version runs thanks to
    java.exe -Djava.library.path=C:\ILOG\CPLEX_Studio124/opl/bin/x86_win32 -classpath C:\ILOG\CPLEX_Studio124\opl\examples\opl_interfaces\java\carseq\classes;C:\ILOG\CPLEX_Studio124\opl\lib\oplall.jar carseq.Carseq

    #DecisionOptimization
    #OPLusingCPLEXOptimizer


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