D has static-ifs as a part of the language. It enables the exact same kind of conditional compilation, but without using a pre-processor: http://dlang.org/cppto

D has static-ifs as a part of the language. It enables the exact same kind of conditional compilation, but without using a pre-processor: http://dlang.org/cpptod.html#metatemplates http://dlang.org/cpptod.html#metatemplates The latest version of D is compelling. It's mostly a reasonable cleanup of C++. It retains all of the power, but the design learns from the decades of experience. The problem is that it's mostly a reasonable cleanup of C++ - it's not different enough to stand out, I think.