Hello Thanks for your response. Is there automatic way to know which libraries my executable will need and which ones it won’t? Why is this the case for only shared libraries? Is it because the linking symbols are already in that shared library and I don’t need to link them again if I’m not using them directly?
Miguel From: Hendrik Sattler <p...@hendrik-sattler.de<mailto:p...@hendrik-sattler.de>> Date: Thursday, March 31, 2016 at 10:27 PM To: Miguel Salazar <salazardet...@llnl.gov<mailto:salazardet...@llnl.gov>>, "cmake@cmake.org<mailto:cmake@cmake.org>" <cmake@cmake.org<mailto:cmake@cmake.org>> Subject: Re: [CMake] Creating a list of link directories from a variable Hi, If the library is a shared object, try to NOT use all those libraries. If they are used in the library but are not part of its public API, you most likely don't need to link them. If you have no missing symbols when linking, you can avoid overlinking you program. If this is a static library, you have a lot more work. For each library without -l, use find_library() and use the library dirs as hints. Do NOT use link_directories(). HS Am 1. April 2016 00:22:09 MESZ, schrieb "Salazar De Troya, Miguel" <salazardet...@llnl.gov<mailto:salazardet...@llnl.gov>>: Hello I am trying to compile a program with a library that provides a bash script to generate the dependencies, libraries and the link directories for the Makefile. I want to generate a CMakeLists.txt that can handle these dependencies from that library. I have been able to come up with regexp that can extract the information and put it into a variable with the dirs or library names separated by comma, for instance: INCLUDE_DIRS = /g/g92/miguel/code/libmesh_2D/include;/usr/include/curl;/usr/include/glpk;/usr/local/tools/vtk-6.1.0/include/vtk-6.1;/g/g92/miguel/petsc-3.6.2/include;/g/g92/miguel/petsc-3.6.2/miguel-opt/include;/usr/local/tools/openmpi-intel-1.8.4/include/openmpi/opal/mca/hwloc/hwloc191/hwloc/include;/usr/local/tools/openmpi-intel-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent;/usr/local/tools/openmpi-intel-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent/include;/usr/local/tools/openmpi-intel-1.8.4/include;/usr/local/tools/openmpi-intel-1.8.4/include/openmpi;/usr/local/tools/boost-mpi-1.55.0//include LIBS = -lcurl;-lhdf5;-lglpk;-lvtkIOCore-6.1;-lvtkCommonCore-6.1;-lvtkCommonDataModel-6.1;-lvtkFiltersCore-6.1;-lvtkIOXML-6.1;-lvtkImagingCore-6.1;-lvtkIOImage-6.1;-lvtkImagingMath-6.1;-lz;-lpetsc;-lcmumps;-ldmumps;-lsmumps;-lzmumps;-lmumps_common;-lpord;-lscalapack;-lHYPRE;-lml;-llapack;-lblas;-lparmetis;-lmetis;-lX11;-lhwloc;-lssl;-lcrypto;-lmpi_usempif08;-lmpi_usempi_ignore_tkr;-lmpi_mpifh;-lifport;-lifcore;-lm;-lmpi;-limf;-lsvml;-lirng;-lipgo;-ldecimal;-lcilkrts;-lstdc++;-lgcc_s;-lirc;-lpthread;-lirc_s;-ldl;-lmesh_opt LIB_DIRS = /usr/lib;/lib;/usr/lib64;/usr/local/tools/vtk-6.1.0/lib;/g/g92/miguel/petsc-3.6.2/miguel-opt/lib;/usr/local/tools/openmpi-intel-1.8.4/lib;/usr/local/tools/ic-14.0.174/composer_xe_2013_sp1.3.174/compiler/lib/intel64;/usr/lib/gcc/x86_64-redhat-linux/4.4.7;/g/g92/miguel/code/libmesh_2D/lib These are variables in my environment that I use in CMake with $ENV{VAR}. How can I use this information for the commands: include_directories($ENV{INCLUDE_DIRS}) link_directories($ENV{LIB_DIRS}) target_link_libraries($ENV{LIBS}) ? It seems that cmake can digest the include directories and the target_link_libraries (because they appear correctly in the compilation), but not the link_directories. Why? Also, I’ve read that it is more correct to use find_library() instead. How would I iterate over the LIBS? 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