search for: macroensureoutofsourcebuild

Hi Jordan, I've committed my changes to hook up the BlocksRuntime/ subdirectory of compiler-rt, using CMake. The cmake build process is documented at <http://llvm.org/docs/CMake.html > More specifically, to use this support on FreeBSD, for example, you would do: 1) Install cmake (<http://www.cmake.org/>), add it to your PATH 2) Check out the source code for llvm and clang

The Blocks language and implementation specifications are checked into clang/docs. More generally, on Mac OS X, the blocks runtime is linked into the C library ("libSystem"), and available to the entire OS. Clients that create blocks may implicitly get compiler-generated calls to some of the runtime functions, and the developer may also make explicit calls to, e.g.,