# CMAKE_DISABLE_PRECOMPILE_HEADERS

Added in version 4.4.

This is a CMake Environment Variable. Its initial value is taken from the calling process environment.

The default value for the `CMAKE_DISABLE_PRECOMPILE_HEADERS` variable when there is no explicit configuration given on the first run while creating a new build tree. On later runs in an existing build tree the value persists in the cache as `CMAKE_DISABLE_PRECOMPILE_HEADERS`.