zircon/system/ulib/runtime/BUILD.gn

# Copyright 2019 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/cpp/library_headers.gni")

library_headers("headers") {
  headers = [
    "runtime/thread.h",
    "runtime/tls.h",
  ]
  public_deps = [ "//src/zircon/lib/zircon:headers" ]
}

static_library("runtime") {
  public_deps = [ ":headers" ]
  sources = [ "thread.cc" ]
  deps = [
    "//sdk/lib/stdcompat",
    "//src/lib/elfldltl",
    "//src/zircon/lib/zircon",
    "//zircon/system/ulib/zircon-internal",
  ]

  # This code is used in early startup, where safe-stack is not ready yet.
  configs += [ "//build/config/sanitizers:no_sanitizers" ]

  # This might be necessary if something from stdcompat didn't get inlined.  A
  # libc++ ABI symbol that's supposedly the same might be COMDAT'd with another
  # TU's version that didn't disable the sanitizers.
  defines = [ "_LIBCPP_HIDE_FROM_ABI_PER_TU=1" ]

  if (zircon_toolchain != false) {
    # Make sure the thread_trampoline function has a frame pointer so that
    # user-visible thread backtraces are consistent across collection methods.
    configs += [ "//build/config:default_frame_pointers" ]
    configs -= [ "//build/config:default_frame_pointers" ]
    configs += [ "//build/config:frame_pointers" ]
  }
}