Download

Building Linux lib using Native Toolchain and CMake

Hi all, I’m trying to build a Linux lib (in this case - librdkafka) using Unreal’s native Linux toolchain (Native Toolchain | Unreal Engine Documentation) for later usage in the Unreal Linux server plugin. In CMake, I’m setting the CMAKE_C_COMPILER as “v12_clang-6.0.1-centos7/x86_64-unknown-linux-gnu/bin/clang”, and CMAKE_CXX_COMPILER as “v12_clang-6.0.1-centos7/x86_64-unknown-linux-gnu/bin/clang++”, but, after configure the following errors appears:

    Building C object CMakeFiles/cmTC_4d8ce.dir/testCCompiler.c.o
    /home/shiny/Dokumenty/v12_clang-6.0.1-centos7/x86_64-unknown-linux-gnu/bin/clang    -MD -MT CMakeFiles/cmTC_4d8ce.dir/testCCompiler.c.o -MF CMakeFiles/cmTC_4d8ce.dir/testCCompiler.c.o.d -o CMakeFiles/cmTC_4d8ce.dir/testCCompiler.c.o -c /home/shiny/Dokumenty/librdkafka-1.6.2/out/CMakeFiles/CMakeTmp/testCCompiler.c
    Linking C executable cmTC_4d8ce
    /snap/cmake/1000/bin/cmake -E cmake_link_script CMakeFiles/cmTC_4d8ce.dir/link.txt --verbose=1
    /home/shiny/Dokumenty/v12_clang-6.0.1-centos7/x86_64-unknown-linux-gnu/bin/clang -rdynamic CMakeFiles/cmTC_4d8ce.dir/testCCompiler.c.o -o cmTC_4d8ce 
    /home/shiny/Dokumenty/v12_clang-6.0.1-centos7/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crt1.o: unrecognized relocation (0x2a) in section `.text'
    /home/shiny/Dokumenty/v12_clang-6.0.1-centos7/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-ld: final link failed: Bad value
    clang: error: linker command failed with exit code 1 (use -v to see invocation)

Can anybody tell me how to adjust other CMake settings to successfully generate make files? Is it even possible to generate makefiles using this toolchain and CMake? Are there other ways to build this lib on Linux using this toolchain?