This repository shows a simple example how you can use the xxd util (found on most Linux distributions) to generate a .h file that contains the binary data as one large array. You can add this file as a source to your application. But this example is not about xxd, it's about how you can use an custom command to generate something that your target (e.g. executable) needs. Some things to remember:

• You use OUTPUT to identify the file that you will generate using your COMMAND entries.

• Do not add the generated file to multiple different targets when also using parallel builds. The custom command will be executed for each target that needs it; doing this in parallel results in issues. See the manual for more info.

• You can pass multiple COMMAND lines.

• Make sure to add the generated OUTPUT to at least one target, otherwise it won't be executed.