In the project build settings, search for "pch".
There will be an item "Prefix Header" where you should enter the name of your PCH file.
Question
How can I use a .pch file of a static library in another project,which is using the library.
Solution
In the project build settings, search for "pch".
There will be an item "Prefix Header" where you should enter the name of your PCH file.