# JOB_POOL_PRECOMPILE_HEADER

Added in version 3.17.

Ninja only: Pool used for generating pre-compiled headers.

The number of parallel compile processes could be limited by defining pools with the global `JOB_POOLS` property and then specifying here the pool name.

For instance:

    set_property(TARGET myexe PROPERTY JOB_POOL_PRECOMPILE_HEADER two_jobs)

This property is initialized by the value of `CMAKE_JOB_POOL_PRECOMPILE_HEADER`.

If neither `JOB_POOL_PRECOMPILE_HEADER` nor `CMAKE_JOB_POOL_PRECOMPILE_HEADER` are set then `JOB_POOL_COMPILE` will be used for this task.