zircon/system/ulib/trace/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.

##########################################
# Though under //zircon, this build file #
# is meant to be used in the Fuchsia GN  #
# build.                                 #
# See fxbug.dev/36548.                   #
##########################################

assert(!defined(zx) || zx != "/",
       "This file can only be used in the Fuchsia GN build.")

import("//build/unification/zx_library.gni")

template("trace_library") {
  zx_library(target_name) {
    forward_variables_from(invoker, "*")

    sdk_headers = [
      "lib/trace/internal/event_args.h",
      "lib/trace/internal/event_common.h",
      "lib/trace/internal/event_internal.h",
      "lib/trace/internal/pairs_internal.h",
      "lib/trace/internal/string_traits.h",
      "lib/trace/event.h",
      "lib/trace/event_args.h",
      "lib/trace/observer.h",
    ]

    # Header dependencies, not including the trace engine.
    # <trace/internal/event_internal.h> has #include <trace-engine/instrumentation.h>.
    public_deps += [
      # <trace/internal/event_internal.h> has #include <zircon/syscalls.h>.

      # <trace/observer.h> has #include <trace-engine/instrumentation.h> (already
      # covered, <lib/async/cpp/wait.h>, <fit/function.h>, and <lib/zx/event.h>.
      "//zircon/public/lib/async-cpp",
      "//zircon/public/lib/fit",
      "//zircon/public/lib/zx",
    ]

    sources = [
      "event.cc",
      "observer.cc",
    ]

    # Source dependencies, not including the trace engine.
    deps += [
      "//zircon/public/lib/async",
      "//zircon/public/lib/async-cpp",
      "//zircon/public/lib/fit",
      "//zircon/public/lib/zx",
    ]
  }
}

set_defaults("trace_library") {
  configs = default_common_binary_configs
}

# The default version for the normal case, and for the SDK.
# For the SDK this needs to be published as "source": We're implemented in
# C++ and C++ SDK libraries can't be published as "static".
# TODO(fxbug.dev/23056): libtrace-engine.so is getting linked into places it shouldn't.
trace_library("trace") {
  sdk_publishable = true
  sdk = "source"
  public_deps = [ "//zircon/system/ulib/trace-engine" ]
  deps = [ "//zircon/system/ulib/trace-engine" ]
  configs += [
    # TODO(fxbug.dev/58162): delete the below and fix compiler warnings
    "//build/config:Wno-conversion",
  ]
}

# A special version for programs and shared libraries that can't use
# libtrace-engine.so.
# N.B. Please verify that you really need this before using it.
# Generally you DON'T want to use this.
trace_library("trace-with-static-engine") {
  sdk = "static"
  public_deps = [ "//zircon/system/ulib/trace-engine:trace-engine-static" ]
  deps = [ "//zircon/system/ulib/trace-engine:trace-engine-static" ]

  # TODO(fxbug.dev/58162): delete the below and fix compiler warnings
  configs += [ "//build/config:Wno-conversion" ]
}

# And again, but this time for drivers.
# This gets linked into each driver.
# TODO(fxbug.dev/23057): Move to ddk.
trace_library("trace-driver") {
  sdk = "static"
  public_deps = [ "//zircon/system/ulib/trace-engine:trace-engine-driver" ]
  deps = [ "//zircon/system/ulib/trace-engine:trace-engine-driver" ]

  # TODO(fxbug.dev/58162): delete the below and fix compiler warnings
  configs += [ "//build/config:Wno-conversion" ]
}