How to append values in xcconfig variables?

Question

I\'m using Xcode and .xcconfig files. I\'m trying to append some values in the preprocessor definitions, but I simply can\'t make it work.

I tried the following (as

Answer 1

This works for me in Xcode 2.4.1:

GCC_PREPROCESSOR_DEFINITIONS = "$(GCC_PREPROCESSOR_DEFINITIONS) NEW_VALUE"

You do have to sometimes allow a few seconds between editing a config file and the change showing up in a target's Build Info.