depends libtool && depends -sub CXX gcc && depends cmake && depends pkgconfig && depends zlib '-DLLVM_ENABLE_ZLIB=1' && depends PYTHON && if [[ "$LLVM_WITH_ANALYZER" == "y" ]] then # perl is required for scan-build, which is the analyzer itself runtime_depends perl fi && optional_depends ocaml '' '' 'build bindings for OCaml' && optional_depends doxygen '' '' "build documentation?" && optional_depends libffi '-DLLVM_ENABLE_FFI=1' '' 'use sytem FFI'