# Copyright 2017 The Fuchsia Authors
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

import("//build/cpp/sdk_shared_library.gni")
import("//build/package.gni")

declare_args() {
  vk_loader_debug = "warn,error"
}

source_set("loader_static") {
  public_configs = [
    "../:vulkan_build_config",
    "../:include_extra_vulkan_headers",
  ]

  include_dirs = [ "." ]

  cflags_c = [
    "-Wno-missing-field-initializers",

    # TODO(DX-1059): Remove this when -Wextra-semi clean.
    "-Wno-extra-semi",
  ]
  if (is_fuchsia) {
    cflags_c += [
      "-DSYSCONFDIR=\"/config\"",
      "-DEXTRASYSCONFDIR=\"/pkg/data\"",
      "-DDATADIR=\"/usr/share\"",
    ]
  }
  if (is_linux) {
    # Copied from ../CMakeLists.txt and ./loader_cmake_config.h.in
    cflags_c += [
      "-DSYSCONFDIR=\"/etc\"",
      "-DFALLBACK_CONFIG_DIRS=\"/etc/xdg\"",
      "-DFALLBACK_DATA_DIRS=\"/usr/local/share:/usr/share\"",
      "-DHAVE_SECURE_GETENV",
    ]
  }

  defines = [ "VK_LOADER_DEBUG=\"$vk_loader_debug\"" ]

  sources = [
    "cJSON.c",
    "debug_utils.c",
    "dev_ext_trampoline.c",
    "extension_manual.c",
    "loader.c",
    "murmurhash.c",
    "phys_dev_ext.c",
    "trampoline.c",
    "unknown_ext_chain.c",
    "wsi.c",
  ]
  if (is_fuchsia) {
    sources += [ "dlopen_fuchsia.c" ]
  }

  if (is_fuchsia) {
    deps = [
      "//sdk/fidl/fuchsia.vulkan.loader:fuchsia.vulkan.loader_c_client",
      "//zircon/public/lib/fdio",
    ]
  }

  if (is_linux) {
    public_deps = [ "//third_party/wayland:client_headers" ]
  }
}

if (is_fuchsia) {
  sdk_shared_library("loader") {
    # The Vulkan loader is named libvulkan
    output_name = "vulkan"

    category = "partner"

    # The Vulkan loader's interface is defined by standard Khronos vulkan headers
    # which can be obtained separately from the loader implementation itself.
    no_headers = true

    deps = [
      ":loader_static",
    ]

    # TODO(MA-488) - while these shared libraries are needed by vulkan icd
    # the app must provide them, so we add the deps here.
    deps += [ "//zircon/public/lib/trace-engine" ]
    deps += [ "//zircon/public/lib/async-default" ]

    # TODO(MA-488): The //zircon/public/lib/async-default dep gives us a dep
    # on //zircon/public/lib/async, which uses the C++ standard library and
    # is linked statically (built from source, though async-default is a
    # prebuilt shared library).  So link in the C++ standard library
    # statically just to satisfy those references.  When the async-default
    # dep is dropped, this can change to "none" (i.e. be removed).
    libcxx_linkage = "static"

    libs = [ "zircon" ]

    runtime_deps = [ "//zircon/public/lib/fdio:fdio_sdk" ]

    # TODO(MA-488): remove this too
    runtime_deps += [ "//zircon/public/lib/trace-engine:trace-engine_sdk" ]
    runtime_deps += [ "//zircon/public/lib/async-default:async-default_sdk" ]
  }
}

if (is_linux) {
  shared_library("loader") {
    # The Vulkan loader is named libvulkan
    output_name = "vulkan"
    deps = [ ":loader_static" ]
  }
}