CMakeLists.txt文件写法(9):显式指定链接时需要的库文件

为每个目标分别指定需要链接的库文件(指定部分目标专用的库文件)
  TARGET_LINK_LIBRARIES: Link a target to given libraries.

  TARGET_LINK_LIBRARIES(target library1
                         library2
                        ...)

Specify a list of libraries to be linked into the specified target. The debug and optimized strings may be used to indicate that the next library listed is to be used only for that specific type of build

为所有目标统一指定需要的库文件(指定所有目标都用的库文件)
LINK_LIBRARIES: Link libraries to all targets added later.

  LINK_LIBRARIES(library1  library2 ...)

This is an old CMake command for linking libraries. Use TARGET_LINK_LIBRARIES unless you have a good reason for every target to link to the same set of libraries.

Specify a list of libraries to be linked into any following targets (typically added with the ADD_EXECUTABLE or ADD_LIBRARY calls). This command is passed down to all subdirectories. The debug and optimized strings may be used to indicate that the next library listed is to be used only for that specific type of build.