Am Mon, 17 Mar 2014 08:35:45 +0000 schrieb Iain Buclaw <ibuc...@gdcproject.org>:
> > If you need to -fversion=CAIRO_HAS_PNG_SUPPORT for every file that > > imports it, you have completely misunderstood the design I > > suggested. > > > > 1. Encapsulate the feature in a function. > > > > 2. Implement the function in module X. Module X is the ONLY module > > that needs the version. In module X, define the function to do > > nothing if version is false. > > > > 3. Nobody who imports X has to define the version. > > > > 4. Just call the function as if the feature always exists. > > Clever, but potentially dangerous once cross-module inlining starts working (The inlined code could be different from the code in the library).
