- Instead of building llvm/clang from source, I simply install those from the ubuntu repository using 'apt-get install clang-3.2'.
- It turned out that emcc cannot find llvm-link on my system. This is because ubuntu installs it as llvm-link-3.2 so this needs fixing.
- Like clang and llvm, node.js can also be obtained from Ubuntu's repository using the 'apt-get install nodejs' command.
- With those modifications, the compiler seems to work just fine.
$ nodejs a.out.js hello, world!
- To target ASM.JS you can use this command line:
$ ./emcc -O1 -s ASM_JS=1 tests/hello_world.c
- There is an emar archiver tool, but combining bytecode objects into an archive gives unresolved symbols when I link against this archive. fixed by using -L. flag.
- You can put files onto a virtual file system using the --embed-file compiler flag. I've not yet figured out how to successfully use dlopen() though.
Lastly, these slides on an emscripten talk are very interesting.