Thanks for the very complete answer, Brad. I will implement your final suggestion since we have no control over the compiler scripts and already have some platform dependent variables set.
Lucas Pettey, PhD HPCMP PETTT EQM CTA Lead ERDC-DSRC OnSite Vicksburg, MS 512-297-9833 Mobile (preferred) 601-634-2980 Office lucas.pet...@engilitycorp.com ________________________________________ From: Brad King [brad.k...@kitware.com] Sent: Thursday, May 28, 2015 12:49 PM To: Pettey, Lucas @ EngilityCorp Cc: cmake@cmake.org; Dan Liew Subject: Re: [CMake] Linking C program to external C++ library On 05/28/2015 01:32 PM, lucas.pet...@engilitycorp.com wrote: > It is interesting to note that the stdc++ library is in > CMAKE_C_IMPLICIT_LINK_LIBRARIES and CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES > but not in CMAKE_CXX_IMPLICIT_LINK_LIBRARIES. A similar case was discussed here: http://www.cmake.org/Bug/view.php?id=14207#c33256 and deemed to be local misconfiguration of the compilers. There is no reason a C or Fortran compiler should link to the C++ runtime library. > when the LINKER_LANGUAGE variable is not set, CMake > links with the C compiler but does not add the stdc++ library. That's because it sees stdc++ in the "C" implicit library list so it knows the compiler front-end will add it. > Is there any way to tell CMake not to add these other > IMPLICIT_LINK_LIBRARIES when doing a mixed language build? Once could add set(CMAKE_C_IMPLICIT_LINK_LIBRARIES "") set(CMAKE_CXX_IMPLICIT_LINK_LIBRARIES "") set(CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES "") to the project after the respective languages are enabled (by the project() or enable_language() commands). -Brad -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
