src/zircon/lib/zircon/BUILD.gn

# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/sdk/sdk_noop_atom.gni")
import("//build/toolchain/elfabi_shared_library.gni")
import("//build/unification/global_variables.gni")

# The vDSO ABI is provided at link time by a stub.  The actual runtime image
# comes from the kernel and is not part of the build or SDK for userland at
# all.  The kernel's internal build of the vDSO verifies that the ABI matches.
if (is_fuchsia && toolchain.base_environment != "kernel") {
  elfabi_shared_library("zircon") {
    # TODO(mcgrathr): The ABIs are identical across machines, but the .tbe file
    # insists on embedding "Arch:".  llvm-elfabi should get features to allow
    # emitting a file without arch tag and to specify --target= to set the
    # arch/class/data of an ELF stub when the .tbe file doesn't say.
    abi = "zircon-$current_cpu.tbe"
    public_deps = [ ":headers" ]
  }
} else {
  # References from other environments only get the headers.  This
  # makes it easy to have "//src/zircon/lib/zircon" deps in common
  # libraries that need to link against it in userland but that in
  # other contexts like kernel or userboot are just using the headers.
  group("zircon") {
    public_deps = [ ":headers" ]
  }
}

group("headers") {
  public_deps = [
    ":zircon-headers",
    "//zircon/vdso:public($default_toolchain)",
  ]
  public_configs = [ "//zircon/vdso:public.config($default_toolchain)" ]
  if (!is_fuchsia) {
    public_deps += [ "//zircon/system/public" ]
  }
}

# These headers can be used in host binaries.
source_set("zircon-headers") {
  configs = []
  public = [
    "include/zircon/exception.h",
    "include/zircon/status.h",
  ]
  public_configs = [ ":zircon-headers.config" ]
}

config("zircon-headers.config") {
  include_dirs = [ "include" ]
}

# The zircon library is not a real SDK atom since it is provided
# directly as part of the SDK sysroot.
sdk_noop_atom("zircon_sdk") {
}