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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Colcon build fails to undefined symbol: osrf_testing_tools_cpp","articleBody":"Greetings,\r\n\r\nI followed the build instructions and got this error:\r\n\r\n```bash\r\nld.lld: error: undefined symbol: osrf_testing_tools_cpp::memory_tools::on_unexpected_calloc(std::__ndk1::variant\u003cstd::__ndk1::function\u003cvoid (osrf_testing_tools_cpp::memory_tools::MemoryToolsService\u0026)\u003e, std::__ndk1::function\u003cvoid ()\u003e, std::nullptr_t\u003e)\r\n\u003e\u003e\u003e referenced by performance_test_fixture.cpp:57 (/home/x/ros2_android_ws/src/ros2/performance_test_fixture/src/performance_test_fixture.cpp:57)\r\n\u003e\u003e\u003e               CMakeFiles/performance_test_fixture.dir/src/performance_test_fixture.cpp.o:(performance_test_fixture::PerformanceTest::SetUp(benchmark::State\u0026))\r\n\r\nld.lld: error: undefined symbol: osrf_testing_tools_cpp::memory_tools::on_unexpected_malloc(std::__ndk1::variant\u003cstd::__ndk1::function\u003cvoid (osrf_testing_tools_cpp::memory_tools::MemoryToolsService\u0026)\u003e, std::__ndk1::function\u003cvoid ()\u003e, std::nullptr_t\u003e)\r\n\u003e\u003e\u003e referenced by performance_test_fixture.cpp:60 (/home/x/ros2_android_ws/src/ros2/performance_test_fixture/src/performance_test_fixture.cpp:60)\r\n\u003e\u003e\u003e               CMakeFiles/performance_test_fixture.dir/src/performance_test_fixture.cpp.o:(performance_test_fixture::PerformanceTest::SetUp(benchmark::State\u0026))\r\n\r\nld.lld: error: undefined symbol: osrf_testing_tools_cpp::memory_tools::on_unexpected_realloc(std::__ndk1::variant\u003cstd::__ndk1::function\u003cvoid (osrf_testing_tools_cpp::memory_tools::MemoryToolsService\u0026)\u003e, std::__ndk1::function\u003cvoid ()\u003e, std::nullptr_t\u003e)\r\n\u003e\u003e\u003e referenced by performance_test_fixture.cpp:63 (/home/x/ros2_android_ws/src/ros2/performance_test_fixture/src/performance_test_fixture.cpp:63)\r\n\u003e\u003e\u003e               CMakeFiles/performance_test_fixture.dir/src/performance_test_fixture.cpp.o:(performance_test_fixture::PerformanceTest::SetUp(benchmark::State\u0026))\r\nclang++: error: linker command failed with exit code 1 (use -v to see invocation)\r\ngmake[2]: *** [CMakeFiles/performance_test_fixture.dir/build.make:103: libperformance_test_fixture.so] Error 1\r\ngmake[1]: *** [CMakeFiles/Makefile2:160: CMakeFiles/performance_test_fixture.dir/all] Error 2\r\ngmake: *** [Makefile:146: all] Error 2\r\n---\r\nFailed   \u003c\u003c\u003c performance_test_fixture [0.90s, exited with code 2]\r\n```\r\n\r\nHow should I resolve it?\r\n\r\nI'm using ROS2 Humble, Ubuntu 22.04, Python 3.10.12. Android NDK r27b (27.1.12297006), Android 34 (I guess).\r\n\r\n```$ gradle --version\r\n\r\n------------------------------------------------------------\r\nGradle 8.7\r\n------------------------------------------------------------\r\n\r\nBuild time:   2024-03-22 15:52:46 UTC\r\nRevision:     650af14d7653aa949fce5e886e685efc9cf97c10\r\n\r\nKotlin:       1.9.22\r\nGroovy:       3.0.17\r\nAnt:          Apache Ant(TM) version 1.10.13 compiled on January 4 2023\r\nJVM:          21.0.4 (Oracle Corporation 21.0.4+8-LTS-274)\r\nOS:           Linux 6.8.0-45-generic amd64\r\n```\r\n\r\n\r\nThere is a similar build error here (on macOS): https://github.com/ros2/ros2/issues/1398\r\n\r\nThere is a plan B to use this: https://github.com/YasuChiba/ros2-android-build","author":{"url":"https://github.com/Hyrtsi","@type":"Person","name":"Hyrtsi"},"datePublished":"2024-10-15T10:55:54.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/247/ros2_java/issues/247"}