build/toolchain/BUILD.gn

# Copyright 2018 The Hafnium Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import("//build/toolchain/embedded.gni")
import("//build/toolchain/host.gni")

host_toolchain("host") {
  use_platform = false
}

# Toolchain for building tests which run under Linux under Hafnium.
embedded_clang_toolchain("aarch64_linux_clang") {
  target = "aarch64-linux-musleabi"

  # TODO: Remove //inc/system if we can stop using the version of stdatomic.h
  # from the Android prebuilt Clang.
  extra_cflags =
      "-nostdinc -isystem" +
      rebase_path("//prebuilts/linux-aarch64/musl/include") + " -isystem" +
      rebase_path("//prebuilts/linux-x64/clang/lib64/clang/9.0.8/include") +
      " -isystem" + rebase_path("//inc/system")
  extra_defines = "-D_LIBCPP_HAS_MUSL_LIBC=1 -D_GNU_SOURCE=1"
  extra_ldflags = "-no-pie -lc --library-path=" +
                  rebase_path("//prebuilts/linux-aarch64/musl/lib/") + " " +
                  rebase_path("//prebuilts/linux-aarch64/musl/lib/crt1.o") +
                  " " + rebase_path(
                      "//prebuilts/linux-x64/clang/lib64/clang/9.0.8/lib/linux/libclang_rt.builtins-aarch64-android.a")
  toolchain_args = {
    use_platform = true
    plat_arch = "fake"
    plat_boot_flow = "//src/arch/fake:boot_flow"
    plat_console = "//src/arch/fake:console"
    plat_iommu = "//src/iommu:absent"
  }
}