bazel/llvm_local.bzl.tmpl

# Part of the Crubit project, under the Apache License v2.0 with LLVM
# Exceptions. See /LICENSE for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

# Provide LLVM from a local tree built with CMake.

llvm_install_tree_build_file_contents = """
package(default_visibility = ["//visibility:public"])

# An extremely coarse-grained target that provides *all* headers and libraries.
cc_library(
    name = "all",
    srcs = glob([
        "lib/*.a",
    ], exclude = [
        "**/*.i386.a",
    ]),
    hdrs = glob([
        "include/**",
    ]),
    includes = [
        "include/",
    ],
    linkopts = ["-lncurses", "-lz"],
)
"""

def llvm_repository(name):
    # First, create an intermediate repo that overlays the BUILD file onto the
    # prebuilt LLVM tree, yielding the single ":all" target.
    native.new_local_repository(
        name = "prebuilt-llvm",
        path = "${LLVM_INSTALL_PATH}",  # template value
        build_file_content = llvm_install_tree_build_file_contents,
    )

    # Next, create the final repo that emulates the layout of Bazel targets in
    # llvm-project.
    native.local_repository(
        name = name,
        path = "bazel/llvm_project",
    )