load("//swift:rules.bzl", "swift_cc_library")

swift_cc_library(
    name = "file",
    srcs = glob(["*.cpp"]),
    hdrs = glob(["*.h"]) + [":path_hash_workaround"],
    visibility = ["//swift:__subpackages__"],
)

genrule(
    name = "path_hash_workaround",
    srcs = [
        "PathHash.h.workaround",
        "PathHash.h.fixed",
    ],
    outs = ["PathHash.h"],
    # see if https://cplusplus.github.io/LWG/issue3657 is fixed with the current compiler or not
    # if fixed, PathHash.h.workaround will not compile
    cmd = "\n".join([
        "if clang -c -x c++ -std=c++17 -Wno-pragma-once-outside-header \\",
        "    $(rootpath PathHash.h.workaround) -o /dev/null &> /dev/null; then",
        "  cp $(rootpath PathHash.h.workaround) $@",
        "else",
        "  cp $(rootpath PathHash.h.fixed) $@",
        "fi",
    ]),
)