On Fri, 12 May 2017 16:57:25 +0200 Patrick Boettcher <patrick.boettc...@posteo.de> wrote:
> Hi list, > > I'm trying to link an executable with a locally build and imported > dynamic library. The link-code generated by CMake differs when > using GCC and Clang in regards to the rpath-options: > > This is my cmake-code for importing the library (this code is actually > generated by using export() ) > > add_library(systemc INTERFACE IMPORTED) > set_target_properties(systemc PROPERTIES > INTERFACE_COMPILE_DEFINITIONS "SC_INCLUDE_FX" > INTERFACE_COMPILE_OPTIONS "-Wno-deprecated-declarations" > INTERFACE_INCLUDE_DIRECTORIES "/local/path/include" > INTERFACE_LINK_LIBRARIES "/local/path/lib/libsystemc.so") > > add_executable(testsc test.cpp) > target_link_libraries(testsc systemc) > > When now running cmake in a build-dir which uses by default gcc the > link-command contains: > > /usr/bin/g++ CMakeFiles/testsc.dir/test.cpp.o -o testsc \ > -Wl,-rpath,/local/path/lib /local/path/lib/libsystemc.so > > doing the same with clang++ as CXX-compiler (CXX=clang++ cmake > <src-path>) gives me a linker command not containing the > -rpath-option: > > clang++ CMakeFiles/testsc.dir/test.cpp.o -o testsc \ > /local/path/lib/libsystemc.so > > The link-process works, but when running the executable inside the > build-dir it is unable to find the library as neither the rpath is set > nor is this library-path known by the dynamic loader. > > Is there anything I can do? Is this behavior expected? How should the > RPATH being handled when clang is used. The problem only occurs when the compiler is coming from a custom build from a custom path. Running CXX=clang++ cmake <src-path> makes cmake generate the correct link options. CXX=/local/path/bin/clang++ cmake <src-path> makes cmake generate wrong link options (without RPATH). Seems to be related the compiler-ID which is wrongly determined or something like that. -- Patrick. -- 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
