Code compilation takes too much time. Build code in parallel.

[EUA]

It really takes too much time to compile. For example it takes 18 seconds to compile BasicOTA.
I observer that my CPU cores are idle while compiling.
Why don't compile files in parallel?

[igrr]

This really depends on the IDE and arduino-builder, please see the relevant issue: arduino/arduino-builder#17

[igrr]

Also see this IDE ticket — it has test builds available: arduino/Arduino#4240

[EUA]

Thanks.