1d8cb09923
The new option works like the existing LLVM_TABLEGEN, and LLVM_CONFIG_PATH options. Instead of building llvm-nm, the build uses the executable defined by LLVM_NM. This is useful for cross-compilation scenarios where the host cannot run the cross-compiled tool, and recursing into another cmake build is not an option (due to required DEFINE's, for example). Reviewed By: smeenai Differential Revision: https://reviews.llvm.org/D83022