version = "20.1.0"
revision = 1
metadata = meta(
    description = "LLVM compiler infrastructure with clang and lld",
    license = "Apache-2.0 WITH LLVM-exception",
    website = "https://llvm.org/",
)
source = tarball_source(
    url = f"https://github.com/llvm/llvm-project/releases/download/llvmorg-{version}/llvm-project-{version}.src.tar.xz",
    sha256 = "?",
    strip_components = 1,
)
host_deps = ["binutils"]

def configure(ctx):
    ctx.run([
        "cmake",
        "-S", ctx.source_dir / "llvm",
        "-B", ctx.build_dir,
        "-G", "Ninja",
        "-DCMAKE_BUILD_TYPE=Release",
        "-DCMAKE_INSTALL_PREFIX=" + ctx.prefix,
        "-DLLVM_ENABLE_PROJECTS=clang;clang-tools-extra;lld",
        "-DLLVM_ENABLE_RUNTIMES=compiler-rt",
        "-DLLVM_TARGETS_TO_BUILD=X86;AArch64;RISCV",
        "-DLLVM_DEFAULT_TARGET_TRIPLE=" + options.target_triple,
        "-DLLVM_HOST_TRIPLE=" + options.target_triple,
        "-DLLVM_ENABLE_LIBXML2=OFF",
        "-DLLVM_ENABLE_LIBEDIT=OFF",
        "-DLLVM_ENABLE_TERMINFO=OFF",
        "-DLLVM_ENABLE_ASSERTIONS=OFF",
        "-DLLVM_ENABLE_PIC=ON",
        "-DLLVM_BUILD_LLVM_DYLIB=ON",
        "-DLLVM_LINK_LLVM_DYLIB=ON",
        "-DLLVM_INSTALL_UTILS=ON",
        "-DLLVM_INCLUDE_TESTS=OFF",
        "-DLLVM_INCLUDE_EXAMPLES=OFF",
        "-DLLVM_INCLUDE_BENCHMARKS=OFF",
        "-DCLANG_DEFAULT_LINKER=lld",
        "-DCLANG_DEFAULT_RTLIB=compiler-rt",
        "-DCLANG_DEFAULT_CXX_STDLIB=libstdc++",
    ], env = {
        "CFLAGS": options.host_cflags,
        "CXXFLAGS": options.host_cxxflags,
        "LDFLAGS": options.host_ldflags,
    })

def build(ctx):
    ctx.run(["cmake", "--build", ctx.build_dir, "-j" + str(ctx.jobs)])

def install(ctx, pkg):
    ctx.run(["cmake", "--install", ctx.build_dir], env = {"DESTDIR": pkg.dest_dir})