本文详细介绍了如何在CMake中正确使用add_dependencies函数。首先，需要确保C++文件名与CMakeLists.txt中定义的一致。其次，文章解释了add_dependencies函数调用的位置至关重要，它分为两种情况：一种是用于库依赖项的添加，另一种则是针对可执行文件的依赖项添加。
Firstly, check the name of your cpp files and make sure they are the same as in the CMakeList.txt;
Secondly, make sure add_dependencies() is called at the right place. If you have read carefully the CMakeList.txt, you will find two calls of add_dependencies() at different places. One is before add_executable() and the other is after. The first one is for "Add cmake target dependencies of the library ", and the later is for "Add cmake target dependencies of the executable".
It is clear that the call place of add_dependencies() depends on the type of your nodes.
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