Comment by drmeister

Agreed, but it's more of a "tree-shaking problem" than anything else. Clasp is written in C++ and Common Lisp. Clasp compiles Common Lisp to LLVM-IR and Clang compiles C++ to LLVM-IR. So theoretically you could compile everything to LLVM-IR and feed that to emscripten. Granted, it's going to be a _huge_ LLVM-IR file. Then you shake out the functions and globals that aren't needed. If the compiler isn't needed then it will shake out (or not be compiled in in the first place). The question for me is "what problem does it solve". I assume there are problems that I'm not aware of that it would solve, otherwise why would someone develop emscripten? Common Lisp is a fantastic language that is really underutilized, it's fun and so expressive. I fell in love with Common Lisp three years ago so deeply that I wrote a new Common Lisp to solve my scientific programming challenges while still being able to make use of powerful C++ libraries. I think everyone should use it everywhere - it's awesome.