I found that the pull-request #187 solves the problem. https://github.com/apache/qpid-proton/pull/187
Von: [email protected] An: [email protected] Datum: 17.12.2019 09:37 Betreff: Cross Compiling qpid-proton 0.30.0 with Yocto SDK Hi, I would like to cross compile qpid-proton version 0.30.0 for an NXP i.MX7D (Arm Cortex A7 core) using the cross compiler toolchain generated with yocto. Unfortunately, the build fails when it comes to linking the C++ library against libqpid-proton-proactor.so. The library libqpid-proton-proactor.so itself was successfully built and resided in the 'c' subdirectory. It seems that the build process does not find the library it builds itself a few steps before. This is how I invoked cmake and make: $ $OECORE_NATIVE_SYSROOT/usr/bin/cmake -DCMAKE_TOOLCHAIN_FILE=$OECORE_NATIVE_SYSROOT/usr/share/cmake/OEToolchainConfig.cmake -DCMAKE_INSTALL_PREFIX=/opt/qpid -DSYSINSTALL_BINDINGS=OFF -DBUILD_PYTHON=OFF -DBUILD_RUBY=OFF .. $ make This is the output of the build process where it fails. [ 70%] Building CXX object cpp/CMakeFiles/qpid-proton-cpp.dir/src/connect_config_dummy.cpp.o [ 71%] Linking CXX shared library libqpid-proton-cpp.so /home/hof/work/qpid-proton/cpp/include/proton/./endpoint.hpp:37:21: warning: virtual table of type 'struct endpoint' violates one definition rule [-Wodr] PN_CPP_CLASS_EXTERN endpoint { ^ /home/hof/work/qpid-proton/cpp/include/proton/./endpoint.hpp:37:21: note: the conflicting type defined in another translation unit has virtual table table with more entries PN_CPP_CLASS_EXTERN endpoint { ^ [ 71%] Built target qpid-proton-cpp Scanning dependencies of target codec_test [ 71%] Building CXX object cpp/CMakeFiles/codec_test.dir/src/codec_test.cpp.o [ 71%] Linking CXX executable codec_test /opt/b8mcu_sdk/0.0.1/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/5.2.0/real-ld: warning: libqpid-proton-proactor.so.1, needed by libqpid-proton-cpp.so.12.6.1, not found (try using -rpath or -rpath-link) /opt/b8mcu_sdk/0.0.1/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/5.2.0/real-ld: warning: libqpid-proton-core.so.10, needed by libqpid-proton-cpp.so.12.6.1, not found (try using -rpath or -rpath-link) libqpid-proton-cpp.so.12.6.1: undefined reference to `pn_data_put_described' libqpid-proton-cpp.so.12.6.1: undefined reference to `pn_dtag' Any suggestions? BTW: Is the -Wodr warning something I should worry about? Thanks. Regards, Franz Hollerer
