Feature request: option to syntax check a sketch without fully compiling

[ianfixes]

Feature Request: syntax checking for sketches

It would be helpful to verify that, outside of any platform-specific or library-specific inclusions, a sketch has proper syntax. The ideal behavior would be to iterate over the full set of files included in the example sketch and perform gcc -c on them.

As a bonus, the JSON response from such a command might contain an object whose keys are the files that were found/tested and whose values are an array of compiler warnings (if any).

[umbynos]

Hi @ianfixes, unfortunately checking the syntax requires the libs and the cores also. For example, how do you check if digitalWrite(10, HIGH); is syntactically correct? You need the core for that. But at this point you are basically doing a full compile.