Recompiling Single File
You may prefer to compile one file at a time without building the whole project to speed up the development process. For this purpose, CLion provides the Recompile action.
Recompile is available for individual source and header files (for the latter, CLion uses resolve context to compile one of the source files that include the specified header). Note that Recompile is disabled for directories and non-C/C++ files.
Calling the Recompile action
The Recompile action is accessible in two ways:
For the currently opened file, choosefrom the main menu (or press Ctrl+Shift+F9):
For a file in the project tree, use theoption from the right-click menu (or use the same Ctrl+Shift+F9 shortcut):
Targets selection process
When you use Recompile, a CMake target is called instead of a direct compiler call. The target to call is picked based on the list of the available Run/Debug configurations:
If the file to compile belongs to the currently selected configuration, then the build target from this configuration is used.
Otherwise, CLion attempts to find a suitable configuration, prioritizing those with the same CMake profile as the currently selected one.
If the previous step has failed, then CLion reports an error.
Examining the results
As with a regular build, you can examine the results of a single file compilation in the Message Tool Window:
For a failed compilation, a signaling pop-up message is displayed: