{ 'variables': { # Clang stuff. 'make_clang_dir%': 'vendor/llvm-build/Release+Asserts', # Set this to true when building with Clang. 'clang%': 1, # Path to mips64el toolchain. 'make_mips64_dir%': 'vendor/gcc-4.8.3-d197-n64-loongson/usr', 'variables': { # The minimum macOS SDK version to use. 'mac_sdk_min%': '10.12', # Set ARM architecture version. 'arm_version%': 7, # Set NEON compilation flags. 'arm_neon%': 1, # Abosulte path to source root. 'source_root%': '