c++ - 为什么cmake不在makefile中加入库链接命令？

Question

我是 Ubuntu，我正在学习 cmake 和 make，只是尝试一个简单的例子。我有两个目录:src 和 build。在 src 中，我有两个文件:main.cpp，其中只有一个简单的 hello world 示例，以及 CMakeLists.txt，其中包含以下文本:

add_executable(test main.cpp)
target_link_libraries(test blas)

在这里，blas 只是我在 /usr/lib/libblas.so 中找到的一些任意库。我的 main.cpp 文件实际上并没有使用它，但我只是在测试...

现在，如果我进入build 目录，并运行cmake ../src，然后在build 中生成一个makefile。该 makefile 的内容粘贴在下面。

令我疑惑的是，为什么根本没有提到blas 库？ cmake 不应该添加一行 -lblas 吗？

谢谢:)

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Answer 1

CMake 使用 3 级 makefile 层次结构。您要查找的行将在 CMakeFiles/Makefile2 中或在 CMakeFiles 下的某个地方的 build.make 中(可能是 也测试 目录)。