CMake: The Importance of Find vs. Link vs. Target
Find vs. Link: Ensuring Library Availability
When linking an executable with libraries, the linker needs to know where to find the library files. Traditionally, this is achieved using the link_directories command to specify the directories where the linker should search for the libraries.
However, a more modern and reliable approach is to use the find_library command. This command searches for the specified library in standard locations and sets the IMPORTED_LOCATION property, providing the linker with the necessary information to find the library.
Find vs. Target: Customizing Library Link Options
In addition to finding libraries, the linker also needs to know how to link them with the executable. This includes specifying the correct library names and any necessary options.
Traditionally, this has been done using the target_link_libraries command. However, the target_link_options command provides more flexibility, allowing you to specify custom linker options.
Use Cases for Target_Link_Options
The target_link_options command can be used to specify a variety of linker options, including:
- Suppressing linker warnings
- Setting the library search path
- Specifying custom library names
By using target_link_options, you can tailor the linking process to meet your specific needs, ensuring that the executable is correctly linked with the desired libraries.
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