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Hello! I recently tried to build a package that was using cpp for other purposes than preprocessing C files. Its configure script was looking for a way to not have cpp predefine anything, and it specifically tried the -undef option, but failed. From reading the docs, I couldn't figure out why. Here's a quote from "info cpp": '-undef' Do not predefine any system-specific or GCC-specific macros. The standard predefined macros remain defined. *Note Standard Predefined Macros::. So I searched the web a bit and figured that I could probably fix it in the specs file. I realise that the specs file probably isn't the canonical place to change this, but I'll leave that to the gcc maintainer. Attached is a patch for the specs file that wraps all old define rules for cpp inside the following: %{!undef:old define rules} I don't know if this is the correct thing to do, but it works for me<TM>. Cheers, Peter
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cpp-undef.diff
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