Hello, I have the following scenario. I have gcc 9.2.0 and boost 1.71.0 installed in /opt/ZS/deps/... directory, built for both arm and x86_64. I can build programs using them just fine and they run as expected provided -Wl,-rpaht,/opt/ZS/deps... is added to g++ command line.
Now I'm trying to build mqtt_cpp library (https://github.com/redboltz/mqtt_cpp) using them. Everything builds just fine using: export CXX=x86_64-linux-gnu-g++-9.2.0 cmake -G'Unix Makefiles' -S. -Bbuild \ -DBOOST_ROOT=/opt/ZS/deps/include/ \ -DBOOST_LIBRARYDIR=/opt/ZS/deps/x86_64-linux-gnu/lib/ This of course does not contain any information regarding RPATH. I assumed this is why binaries (examples in fact) in build directory can't find proper libraries, so I tried installing them (examples). Unfortunately "make install" installs library (it is header-only library) and not examples, so I can't run any of them. Since I *really* want to run these examples, I tried configuring and building using this command: export CXX=x86_64-linux-gnu-g++-9.2.0 cmake -G'Unix Makefiles' -S. -Bbuild \ -DBOOST_ROOT=/opt/ZS/deps/include/ \ -DBOOST_LIBRARYDIR=/opt/ZS/deps/x86_64-linux-gnu/lib/ \ -DCMAKE_SKIP_BUILD_RPATH=FALSE \ -DCMAKE_SKIP_RPATH=OFF \ -DCMAKE_BUILD_WITH_INSTALL_RPATH=TRUE I assumed that -DCMAKE_SKIP_BUILD_RPATH=FALSE means that I want binaries in build directory (not installed ones) to already have RPATH embedded. I also assumed that -DCMAKE_SKIP_RPATH=OFF assures me that RPATH will be used during build and/or installation. I assumed that -DCMAKE_BUILD_WITH_INSTALL_RPATH=TRUE is supposed to add to binaries in build directory RPATH containing paths to libraries found and used by CMake. All of this simply isn't true, binaries generated by "make -j 4" not only don't have proper RPATH, they don't have rpath at all, not even invalid one. I tried with: readelf -a build/example/broker | grep -i rpath and using chrpath: chrpath build/exampl/broker but there is not even a trace of rpath. Greps comes back emptyhanded and `chrpath` util informs me, that: broker: no rpath or runpath tag found Is there some some magical combination of these flags that allows me to build and run (this is paramount) binaries that were not installed? CMake used is 3.15.4, I don't think earlier ones are aware of boost's version 1.71.0. I also tried adding -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=ON , but it changes nothing. Thanks in advance, -- Jędrzej Dudkiewicz I really hate this damn machine, I wish that they would sell it. It never does just what I want, but only what I tell it. -- 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: https://cmake.org/mailman/listinfo/cmake
