Unknown CMake command "check_symbol_exists".
- Using these message generators: gencpp;geneus;genlisp;gennodejs;genpy
CMake Error at CMakeLists.txt:59 (check_symbol_exists):
Unknown CMake command "check_symbol_exists".
-- Configuring incomplete, errors occurred!
See also "/home/ht/catkin_ws/src/navigation/amcl/cmake-build-debug/CMakeFiles/CMakeOutput.log".
See also "/home/ht/catkin_ws/src/navigation/amcl/cmake-build-debug/CMakeFiles/CMakeError.log".
在clion里面reload cmake project时,发现报错,找不到该库,通过查看error日志,发现是线程没有
CMakeFiles/cmTC_1a3f9.dir/src.c.o: In function `main':
src.c:(.text+0x3c): undefined reference to `pthread_create'
src.c:(.text+0x48): undefined reference to `pthread_detach'
src.c:(.text+0x59): undefined reference to `pthread_join'
src.c:(.text+0x6d): undefined reference to `pthread_atfork'
collect2: error: ld returned 1 exit status
问题参考:https://stackoverflow.com/questions/55445914/cmake-check-symbol-exists-doesnt-work-because-of-missing-pthread
解决:https://cmake.org/cmake/help/latest/module/CheckSymbolExists.html
在CMakeLists文件里加一行
include(CheckSymbolExists)
-------
解决!!!
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