celix build for raspberry pi2 fails

[rlenferink]

Building celix for raspberry pi2 with yocto poky distro version 2.2 gives warning: "readdir_r is deprecated" and since all warnings are treated as errors the build fails. (See log.do_compile.4948) The following changes were needed for succesful compilation

./celix/CMakeLists.txt 39,40c39 < # SET(CMAKE_C_FLAGS "-D_GNU_SOURCE -std=gnu99 -Wall -Werror -fPIC ${CMAKE_C_FLAGS}") < SET(CMAKE_C_FLAGS "-D_GNU_SOURCE -std=gnu99 -Wall -fPIC ${CMAKE_C_FLAGS}")

./celix/dependency_manager_cxx/CMakeLists.txt 22,23c22 < # set(CMAKE_CXX_FLAGS "-Wall -Werror -fno-rtti -fno-exceptions ${CMAKE_CXX_FLAGS}") < set(CMAKE_CXX_FLAGS "-Wall -fno-rtti -fno-exceptions ${CMAKE_CXX_FLAGS}")

./celix/examples/dm_example_cxx/CMakeLists.txt 19,20c19 < # set(CMAKE_CXX_FLAGS "-Wall -Werror -fno-rtti -fno-exceptions ${CMAKE_CXX_FLAGS}") < set(CMAKE_CXX_FLAGS "-Wall -fno-rtti -fno-exceptions ${CMAKE_CXX_FLAGS}")

./celix/examples/services_example_cxx/CMakeLists.txt 19,20c19 < # set(CMAKE_CXX_FLAGS "-Wall -Werror -fno-rtti -fno-exceptions ${CMAKE_CXX_FLAGS}") < set(CMAKE_CXX_FLAGS "-Wall -fno-rtti -fno-exceptions ${CMAKE_CXX_FLAGS}")

Also the link stage fails with the error: ../../framework/libcelix_framework.so.2: undefined reference to dlsym' ../../framework/libcelix_framework.so.2: undefined reference to dlerror' ../../framework/libcelix_framework.so.2: undefined reference to dlopen' ../../framework/libcelix_framework.so.2: undefined reference to dlclose' (See log.do_compile.4948)

I had to add the dl library to the link libraries to make the build work:

./celix/deployment_admin/CMakeLists.txt 64c64 < target_link_libraries(deployment_admin celix_framework ${CURL_LIBRARIES} dl)

./celix/launcher/CMakeLists.txt 29c29 < target_link_libraries(celix celix_framework ${CURL_LIBRARIES} dl) 31c31 < target_link_libraries(celix celix_dfi dl) #note not strictly needed, but ensure libdfi is a dep for the framework, useful when create docker images

./celix/utils/CMakeLists.txt 61c61 < target_link_libraries(celix_utils m pthread dl)

The bitbake do_package_qa stage fails with: ERROR: QA Issue: celix: /work/cortexa7hf-neon-vfpv4-poky-linux-gnueabi/celix/1.0-r0/packages-split/celix/usr/bin/celix contains probably-redundant RPATH /usr/lib [useless-rpaths] (See log.do_package_qa.10608) I solved this by adding the following in the celix.bb file: INSANE_SKIP_${PN} += "useless-rpaths"

With these changes celix builds and i can run the hello world and dm examples on the pi2.

log.do_compile.4948 log.do_package_qa.10608

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Original creation date: 16/Dec/2016 Reporter: Rob