Xcode Add Global reference file PCH

Xcode6 before the prefixheader.pch file in the writing project, most of the macro definition, header files are imported in this PCH file, although convenient, but will increase the build time, So the Xcode6 and later versions removed the prefixheader.pch file, reducing the build time.

But for convenience, I created the prefixheader.pch file:

1. Open the new file, IOS---other----PCH file, create a PCH files, prefixheader.pch

2. Add the path to the prefix header option in building setting "$ (srcroot)/project name/PCH filename"

Xcode Add Global reference file PCH