load("@rules_foreign_cc//foreign_cc:defs.bzl", "configure_make")

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

filegroup(
    name = "all_srcs",
    srcs = glob(
        include = ["**"],
        exclude = ["*.bazel"],
    ),
)

# I tested and this builds for me on macOS and Linux, did not check Windows
configure_make(
    name = "bison",
    build_data = [
        "@m4",
    ],
    env = select({
        "@platforms//os:linux": {
            "M4": "$$EXT_BUILD_DEPS$$/bin/m4/bin/m4",
        },
        "@platforms//os:macos": {
            "AR": "",
            "M4": "$$EXT_BUILD_DEPS$$/bin/m4/bin/m4",
        },
        "//conditions:default": {},
    }),
    lib_source = ":all_srcs",
    out_binaries = [
        "bison",
        "yacc",
    ],
    # Bison depends on m4sugar.m4 in the "share" directory at runtime
    out_data_dirs = ["share"],
    out_static_libs = ["liby.a"],
)

filegroup(
    name = "gen_dir",
    srcs = [":bison"],
    output_group = "gen_dir",
    visibility = ["//visibility:public"],
)