Here are the most important parts of the code structure:

• src/ - Cloud9 root
• build/ - Build scripts (gyp wrapper, LLVM & binutils downloader, global all.gyp file)
• cloud9/ - Symbolic execution engine
• klee-uclibc/ - Modified C library to support symbolic execution
• third_party/
• gyp/ - The Gyp build system code
• stp/ - The STP solver
• llvm/ - LLVM source code
• llvm-build/ - LLVM binaries
• binutils/ - Binutils source code
• binutils-install/ - Binutils binaries
• ...
• testing_targets/ - LLVM bitcode
• build/ - common LLVM build scripts (env. setup, global gyp files)
• ...
• ...