When I moved the default CSS rules into a separate file I was facing the old dilemma: how can I embed this in the static library but still be able to easily add contents to it via Xcode. I previously explained how you can turn any file into a c-Byte-array. But this still required manual work.
I did a bit of researching and found that on regular Linux systems people seem to have a tool named objcopy which can copy files as their are into an object file (.o) which can be linked together to the final binary by the linker. But unfortunately this tool does not come with Xcode. So it is out of the question because I want everybody to be able to build DTCoreText.
Xcode Build Rules come to the rescue. They can automate any kind of preprocessing you like and it turns out they are an easy solution for this very problem.
