BUILD.gn

# Copyright 2014-2015 The Chromium 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 the use_x11 variable
import("//build/config/dcheck_always_on.gni")
import("//build/config/linux/pkg_config.gni")
import("//build/config/ui.gni")
import("//testing/libfuzzer/fuzzer_test.gni")
import("gni/angle.gni")
if (is_android) {
  # android/rules.gni can only be imported for Android targets
  import("//build/config/android/rules.gni")
}

declare_args() {
  # Use the PCI lib to collect GPU information on Linux.
  use_libpci = is_linux && (!is_chromecast || is_cast_desktop_build) &&
               (use_x11 || use_ozone)

  # Link in system libGL, to work with apitrace.  See doc/DebuggingTips.md.
  angle_link_glx = false
}

if (!build_with_chromium) {
  group("all") {
    testonly = true
    deps = [
      ":angle_shader_translator",
      ":translator_fuzzer",
      "//samples:all",
      "//src/tests:all",
    ]
  }
}

if (ozone_platform_gbm) {
  pkg_config("libdrm") {
    packages = [ "libdrm" ]
  }
}

angle_git_is_present = exec_script("src/commit_id.py",
                                   [
                                     "check",
                                     rebase_path(".", root_build_dir),
                                   ],
                                   "value")

angle_use_commit_id = angle_git_is_present == 1

import("src/libGLESv2.gni")
import("src/compiler.gni")

# This config is exported to dependent targets (and also applied to internal
# ones).
config("external_config") {
  include_dirs = [ "include" ]
}

# This config is applied to internal Angle targets (not pushed to dependents).
config("internal_config") {
  include_dirs = [
    "include",
    "src",
  ]

  # Prevent the GL headers from redeclaring ANGLE entry points.
  defines = [
    "GL_GLEXT_PROTOTYPES",
    "EGL_EGLEXT_PROTOTYPES",
  ]

  if (angle_64bit_current_cpu) {
    defines += [ "ANGLE_IS_64_BIT_CPU" ]
  } else {
    defines += [ "ANGLE_IS_32_BIT_CPU" ]
  }

  if (angle_force_thread_safety) {
    defines += [ "ANGLE_FORCE_THREAD_SAFETY=1" ]
  }
}

config("extra_warnings") {
  cflags = []

  # Enable more default warnings on Windows.
  if (is_win) {
    cflags += [
      "/we4244",  # Conversion: possible loss of data.
      "/we4456",  # Variable shadowing.
      "/we4458",  # declaration hides class member.
      "/we4800",  # forcing value to bool.
      "/we4838",  # narrowing conversion.
    ]
  }
  if (is_clang) {
    cflags += [
      # Remove when crbug.com/428099 is resolved.
      "-Winconsistent-missing-override",
      "-Wunneeded-internal-declaration",
      "-Wnon-virtual-dtor",
    ]
  }
}

# This config adds build-ids to the associated library.
# -Wl is a special option that indicates that clang should pass the associated
# option --build-id to the linker. This will cause a build-id section to be added
# to the associated library. The build-id makes it possible for a debugger to
# find the right symbol file to use.
config("build_id_config") {
  ldflags = [ "-Wl,--build-id" ]
}

if (is_win) {
  copy("copy_compiler_dll") {
    sources = [
      "$windows_sdk_path/Redist/D3D/$target_cpu/d3dcompiler_47.dll",
    ]
    outputs = [
      "$root_out_dir/d3dcompiler_47.dll",
    ]
  }
}

angle_undefine_configs = [ "//build/config/compiler:default_include_dirs" ]

# Holds the shared includes so we only need to list them once.
source_set("includes") {
  sources = libangle_includes
}

static_library("preprocessor") {
  sources = angle_preprocessor_sources

  configs -= angle_undefine_configs
  configs += [
    ":extra_warnings",
    ":internal_config",
  ]

  public_deps = [
    ":angle_common",
  ]
}

config("translator_disable_pool_alloc") {
  defines = [ "ANGLE_TRANSLATOR_DISABLE_POOL_ALLOC" ]
}

config("debug_annotations_config") {
  if (is_debug) {
    defines = [ "ANGLE_ENABLE_DEBUG_ANNOTATIONS" ]
  }
}

config("angle_release_asserts_config") {
  if (dcheck_always_on) {
    defines = [ "ANGLE_ENABLE_RELEASE_ASSERTS" ]
  }
}

config("angle_common_config") {
  include_dirs = [ "src/common/third_party/base" ]
  if (is_android) {
    libs = [ "log" ]
  }
}

static_library("angle_common") {
  sources = libangle_common_sources

  if (is_linux || is_android || is_fuchsia) {
    sources += libangle_common_linux_sources
  }

  if (is_mac) {
    sources += libangle_common_mac_sources
  }

  if (is_win) {
    sources += libangle_common_win_sources
  }

  configs -= angle_undefine_configs
  configs += [
    ":angle_common_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  public_deps = [
    ":commit_id",
    ":includes",
  ]
  public_configs = [ ":angle_common_config" ]
  all_dependent_configs = [ ":angle_release_asserts_config" ]
}

config("angle_image_util_config") {
  include_dirs = [
    "include",
    "src",
  ]
}

static_library("angle_image_util") {
  sources = libangle_image_util_sources

  configs -= angle_undefine_configs
  configs += [
    ":internal_config",
    ":extra_warnings",
  ]

  public_configs = [ ":angle_image_util_config" ]

  public_deps = [
    ":angle_common",
  ]
}

config("angle_gpu_info_util_config") {
  include_dirs = [
    "include",
    "src",
  ]
}

static_library("angle_gpu_info_util") {
  configs -= angle_undefine_configs
  configs += [
    ":internal_config",
    ":extra_warnings",
  ]

  public_configs = [ ":angle_gpu_info_util_config" ]

  public_deps = [
    ":angle_common",
  ]

  sources = libangle_gpu_info_util_sources
  deps = []
  libs = []
  defines = []

  if (is_android) {
    sources += [ "src/gpu_info_util/SystemInfo_android.cpp" ]
  }

  if (is_win) {
    sources += libangle_gpu_info_util_win_sources
    libs += [ "setupapi.lib" ]
    defines += [ "GPU_INFO_USE_SETUPAPI" ]
  }

  if (is_linux) {
    sources += libangle_gpu_info_util_linux_sources

    if (use_x11) {
      sources += libangle_gpu_info_util_x11_sources
      deps += [ "src/third_party/libXNVCtrl:libXNVCtrl" ]
      defines += [ "GPU_INFO_USE_X11" ]
      libs += [
        "X11",
        "Xi",
        "Xext",
      ]
    }
  }

  if (use_libpci) {
    sources += libangle_gpu_info_util_libpci_sources
    defines += [ "GPU_INFO_USE_LIBPCI" ]
    libs += [ "pci" ]
  }

  if (is_mac) {
    sources += libangle_gpu_info_util_mac_sources
    libs += [
      "IOKit.framework",
      "CoreFoundation.framework",
      "CoreGraphics.framework",
    ]
  }
}

static_library("translator") {
  sources = angle_translator_sources
  defines = []

  if (angle_enable_essl || use_fuzzing_engine) {
    sources += angle_translator_essl_sources
    defines += [ "ANGLE_ENABLE_ESSL" ]
  }

  if (angle_enable_glsl || use_fuzzing_engine) {
    sources += angle_translator_glsl_sources
    defines += [ "ANGLE_ENABLE_GLSL" ]
  }

  if (angle_enable_hlsl || use_fuzzing_engine) {
    sources += angle_translator_hlsl_sources
    defines += [ "ANGLE_ENABLE_HLSL" ]
  }

  if (angle_enable_vulkan || use_fuzzing_engine) {
    sources += angle_translator_lib_vulkan_sources
    defines += [ "ANGLE_ENABLE_VULKAN" ]
  }

  configs -= angle_undefine_configs
  configs += [
    ":internal_config",
    ":extra_warnings",
  ]
  public_configs = [ ":external_config" ]
  if (use_fuzzing_engine) {
    all_dependent_configs = [ ":translator_disable_pool_alloc" ]
  }

  deps = [
    ":includes",
    ":preprocessor",
  ]

  public_deps = [
    ":angle_common",
  ]

  if (is_win) {
    # Necessary to suppress some system header xtree warnigns in Release.
    # For some reason this warning doesn't get triggered in Chromium
    cflags = [ "/wd4718" ]
  }
}

source_set("translator_fuzzer") {
  sources = [
    "src/compiler/fuzz/translator_fuzzer.cpp",
  ]

  include_dirs = [
    "include",
    "src",
  ]

  deps = [
    ":translator",
  ]
}

config("commit_id_config") {
  include_dirs = [ "$root_gen_dir/angle" ]
}

commit_id_output_file = "$root_gen_dir/angle/id/commit.h"
if (angle_use_commit_id) {
  action("commit_id") {
    script = "src/commit_id.py"
    outputs = [
      commit_id_output_file,
    ]

    # commit id should depend on angle's HEAD revision
    inputs = [
      ".git/HEAD",
    ]

    args = [
      "gen",
      rebase_path(".", root_build_dir),
      rebase_path(commit_id_output_file, root_build_dir),
    ]

    public_configs = [ ":commit_id_config" ]
  }
} else {
  copy("commit_id") {
    sources = [
      "src/commit.h",
    ]
    outputs = [
      commit_id_output_file,
    ]
    public_configs = [ ":commit_id_config" ]
  }
}

config("libANGLE_config") {
  cflags = []
  defines = []
  if (angle_enable_d3d9) {
    defines += [ "ANGLE_ENABLE_D3D9" ]
  }
  if (angle_enable_d3d11) {
    defines += [ "ANGLE_ENABLE_D3D11" ]
  }
  if (angle_enable_gl) {
    defines += [ "ANGLE_ENABLE_OPENGL" ]
    if (use_x11) {
      defines += [ "ANGLE_USE_X11" ]
    }
    if (angle_enable_gl_null) {
      defines += [ "ANGLE_ENABLE_OPENGL_NULL" ]
    }
  }
  if (angle_enable_vulkan) {
    defines += [ "ANGLE_ENABLE_VULKAN" ]
  }
  if (angle_enable_null) {
    defines += [ "ANGLE_ENABLE_NULL" ]
  }
  defines += [ "LIBANGLE_IMPLEMENTATION" ]

  if (is_win) {
    cflags += [ "/wd4530" ]  # C++ exception handler used, but unwind semantics are not enabled.
  }
}

if (angle_enable_vulkan) {
  # Use this target to include everything ANGLE needs for Vulkan.
  group("angle_vulkan") {
    deps = [
      "$angle_root/third_party/glslang:glslang",
    ]
    public_deps = [
      "$angle_root/third_party/vulkan-headers:vulkan_headers",
    ]
    public_configs = [
      "$angle_root/third_party/glslang:glslang_config",
      "$angle_root/third_party/vulkan-validation-layers:vulkan_config",
    ]
    data_deps = []
    if (!is_android) {
      deps += [ "$angle_root/third_party/vulkan-loader:libvulkan" ]
      data_deps += [ "$angle_root/third_party/vulkan-tools:VkICD_mock_icd" ]
      public_configs +=
          [ "$angle_root/third_party/vulkan-loader:vulkan_loader_config" ]
    }

    if (angle_enable_vulkan_validation_layers) {
      data_deps += [ "$angle_root/third_party/vulkan-validation-layers:vulkan_validation_layers" ]
      if (!is_android) {
        data_deps += [ "$angle_root/third_party/vulkan-validation-layers:vulkan_gen_json_files" ]
      }
    }
  }
}

static_library("libANGLE") {
  sources = libangle_sources

  include_dirs = []
  libs = []
  defines = []
  if (angle_link_glx) {
    libs += [ "GL" ]
    defines += [ "ANGLE_LINK_GLX" ]
  }
  public_deps = [
    ":angle_common",
  ]
  deps = [
    ":angle_gpu_info_util",
    ":angle_image_util",
    ":commit_id",
    ":includes",
    ":translator",
  ]

  # Shared D3D sources.
  if (angle_enable_d3d9 || angle_enable_d3d11) {
    sources += libangle_d3d_shared_sources

    defines += [ "ANGLE_PRELOADED_D3DCOMPILER_MODULE_NAMES={ " + "\"d3dcompiler_47.dll\", \"d3dcompiler_46.dll\", \"d3dcompiler_43.dll\" }" ]
  }

  if (angle_enable_d3d9) {
    sources += libangle_d3d9_sources
    libs += [ "d3d9.lib" ]
  }

  if (angle_enable_d3d11) {
    sources += libangle_d3d11_sources
    sources += libangle_d3d11_win32_sources
    libs += [ "dxguid.lib" ]
  }

  if (angle_enable_gl) {
    sources += libangle_gl_sources
    include_dirs += [ "src/third_party/khronos" ]

    if (angle_enable_gl_null) {
      sources += libangle_gl_null_sources
    }
    if (is_win) {
      sources += libangle_gl_wgl_sources
    }
    if (use_x11) {
      sources += libangle_gl_glx_sources
      deps += [ "src/third_party/libXNVCtrl:libXNVCtrl" ]
      libs += [
        "X11",
        "Xi",
        "Xext",
      ]
    }
    if (is_mac) {
      sources += libangle_gl_cgl_sources
      libs += [
        "Cocoa.framework",
        "IOSurface.framework",
        "OpenGL.framework",
        "QuartzCore.framework",
      ]
    }
    if (is_android) {
      sources += libangle_gl_egl_sources
      sources += libangle_gl_egl_dl_sources
      sources += libangle_gl_egl_android_sources
      if (ndk_supports_nativewindow) {
        libs += [ "nativewindow" ]
      } else {
        libs += [ "android" ]
      }
      libs += [ "log" ]
    }
    if (ozone_platform_gbm) {
      configs += [ ":libdrm" ]
      defines += [ "ANGLE_USE_OZONE" ]
      deps += [ "//third_party/minigbm" ]
      sources += libangle_gl_egl_sources
      sources += libangle_gl_egl_dl_sources
      sources += libangle_gl_ozone_sources
    }
  }

  if (angle_enable_vulkan) {
    sources += libangle_vulkan_sources
    if (is_win) {
      sources += libangle_vulkan_win32_sources
    }
    if (is_linux) {
      sources += libangle_vulkan_xcb_sources
    }
    if (is_android) {
      sources += libangle_vulkan_android_sources
    }
    deps += [ ":angle_vulkan" ]
    public_deps += [ "$angle_root/third_party/vulkan-headers:vulkan_headers" ]

    # Include generated shaders.
    import("src/libANGLE/renderer/vulkan/vk_internal_shaders_autogen.gni")
    sources += angle_vulkan_internal_shaders
  }

  if (angle_enable_null) {
    sources += libangle_null_sources
  }

  if (is_debug) {
    defines += [ "ANGLE_GENERATE_SHADER_DEBUG_INFO" ]
  }

  configs -= angle_undefine_configs

  configs += [
    ":commit_id_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  public_configs = [ ":libANGLE_config" ]

  if (is_win) {
    data_deps = [
      ":copy_compiler_dll",
    ]
  }
}

config("shared_library_public_config") {
  if (is_mac && !is_component_build) {
    # Executable targets that depend on the shared libraries below need to have
    # the rpath setup in non-component build configurations.
    ldflags = [
      "-rpath",
      "@executable_path/",
    ]
  }
}

# This config controls export definitions on ANGLE API calls.
config("angle_static") {
  defines = [
    "ANGLE_EXPORT=",
    "EGLAPI=",
    "GL_APICALL=",
    "GL_API=",
  ]
}

shared_library("libGLESv2${angle_libs_suffix}") {
  sources = libglesv2_sources

  if (is_android) {
    configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
    configs += [ ":build_id_config" ]
  }

  if (is_win) {
    ldflags = [ "/DEF:" + rebase_path("src/libGLESv2/libGLESv2_autogen.def",
                                      root_build_dir) ]
  }

  if (is_mac && !is_component_build) {
    ldflags = [
      "-install_name",
      "@rpath/${target_name}.dylib",
    ]
    public_configs = [ ":shared_library_public_config" ]
  }

  configs -= angle_undefine_configs
  configs += [
    ":commit_id_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  defines = [ "LIBGLESV2_IMPLEMENTATION" ]
  if (is_win) {
    defines += [
      "GL_APICALL=",
      "GL_API=",
    ]
  } else {
    defines += [
      "GL_APICALL=__attribute__((visibility(\"default\")))",
      "GL_API=__attribute__((visibility(\"default\")))",
    ]
  }

  deps = [
    ":includes",
    ":libANGLE",
  ]
}

static_library("libGLESv2_static") {
  sources = libglesv2_sources

  configs -= angle_undefine_configs
  configs += [
    ":commit_id_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  public_configs = [ ":angle_static" ]

  deps = [
    ":includes",
    ":libANGLE",
  ]
}

shared_library("libGLESv1_CM${angle_libs_suffix}") {
  sources = libglesv1_cm_sources

  if (is_android) {
    configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
    configs += [ ":build_id_config" ]
  }

  if (is_mac && !is_component_build) {
    ldflags = [
      "-install_name",
      "@rpath/${target_name}.dylib",
    ]
    public_configs = [ ":shared_library_public_config" ]
  }

  configs -= angle_undefine_configs
  configs += [
    ":commit_id_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  defines = []
  if (is_win) {
    defines += [
      "GL_APICALL=",
      "GL_API=",
    ]
  } else {
    defines += [
      "GL_APICALL=__attribute__((visibility(\"default\")))",
      "GL_API=__attribute__((visibility(\"default\")))",
    ]
  }

  deps = [
    ":includes",
    ":libGLESv2${angle_libs_suffix}",
  ]
}

static_library("libGLESv1_CM_static") {
  sources = libglesv1_cm_sources

  configs -= angle_undefine_configs
  configs += [
    ":commit_id_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  public_configs = [ ":angle_static" ]

  deps = [
    ":includes",
    ":libGLESv2_static",
  ]
}

shared_library("libEGL${angle_libs_suffix}") {
  sources = libegl_sources

  if (is_android) {
    configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
    configs += [ ":build_id_config" ]
  }
  configs -= angle_undefine_configs
  configs += [
    ":commit_id_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  defines = [ "LIBEGL_IMPLEMENTATION" ]
  if (is_win) {
    defines += [ "EGLAPI=" ]
  } else {
    defines += [ "EGLAPI=__attribute__((visibility(\"default\")))" ]
  }

  if (is_win) {
    ldflags = [ "/DEF:" + rebase_path("src/libEGL/libEGL.def", root_build_dir) ]
  }

  if (is_mac && !is_component_build) {
    ldflags = [
      "-install_name",
      "@rpath/${target_name}.dylib",
    ]
    public_configs = [ ":shared_library_public_config" ]
  }

  deps = [
    ":includes",
    ":libGLESv2${angle_libs_suffix}",
  ]
}

static_library("libEGL_static") {
  sources = libegl_sources

  configs -= angle_undefine_configs
  configs += [
    ":commit_id_config",
    ":debug_annotations_config",
    ":extra_warnings",
    ":internal_config",
  ]

  public_configs = [ ":angle_static" ]

  deps = [
    ":includes",
    ":libGLESv2_static",
  ]
}

import("util/util.gni")

config("angle_util_config") {
  include_dirs = [ "util" ]
  if (is_linux && use_x11) {
    libs = [ "X11" ]
  }
}

foreach(is_shared_library,
        [
          true,
          false,
        ]) {
  if (is_shared_library) {
    library_type = "shared_library"
    library_name = "angle_util"
    dep_suffix = "${angle_libs_suffix}"
  } else {
    library_type = "static_library"
    library_name = "angle_util_static"
    dep_suffix = "_static"
  }

  target(library_type, library_name) {
    sources = util_sources

    if (is_win) {
      sources += util_win32_sources
    }

    libs = []
    if (is_linux) {
      sources += util_linux_sources
      libs += [
        "rt",
        "dl",
      ]
    }

    if (is_mac) {
      sources += util_osx_sources
      libs += [
        "AppKit.framework",
        "QuartzCore.framework",
      ]
    }

    if (use_x11) {
      sources += util_x11_sources
    }

    if (is_android) {
      if (is_shared_library) {
        configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
      }

      # To prevent linux sources filtering on android
      set_sources_assignment_filter([])
      sources += util_linux_sources
      sources += util_android_sources
      libs += [
        "android",
        "log",
      ]
    }

    if (use_ozone) {
      sources += util_ozone_sources
    }

    configs += [
      ":debug_annotations_config",
      ":extra_warnings",
    ]

    public_configs = [
      ":angle_util_config",
      ":internal_config",
    ]

    deps = [
      ":angle_common",
      ":libEGL${dep_suffix}",
      ":libGLESv2${dep_suffix}",
    ]

    if (is_shared_library) {
      defines = [ "LIBANGLE_UTIL_IMPLEMENTATION" ]

      if (is_mac && !is_component_build) {
        ldflags = [
          "-install_name",
          "@rpath/lib${target_name}.dylib",
        ]
        public_configs += [ ":shared_library_public_config" ]
      }
    }
  }
}

# Convenience targets for some of the samples so they can be built
# with Chromium's toolchain.

executable("angle_shader_translator") {
  testonly = true

  sources = [
    "samples/shader_translator/shader_translator.cpp",
  ]

  deps = [
    ":translator",
  ]
}

if (is_android) {
  # Package ANGLE libraries for pre-installed system image
  android_apk("angle_apk") {
    if (build_apk_secondary_abi && android_64bit_target_cpu) {
      secondary_abi_shared_libraries = [
        "//third_party/angle:libEGL${angle_libs_suffix}($android_secondary_abi_toolchain)",
        "//third_party/angle:libGLESv1_CM${angle_libs_suffix}($android_secondary_abi_toolchain)",
        "//third_party/angle:libGLESv2${angle_libs_suffix}($android_secondary_abi_toolchain)",
      ]
    }

    android_manifest = "AndroidManifest.xml"

    # requires_sdk_api_level_23 tells the apk tool that this apk is only
    # supported on M or later releases (which is true for Vulkan).
    # Allows tool to optimize for that.
    requires_sdk_api_level_23 = true
    apk_name = "ANGLEPrebuilt"
    uncompress_shared_libraries = true
    shared_libraries = [
      "//third_party/angle:libEGL${angle_libs_suffix}",
      "//third_party/angle:libGLESv1_CM${angle_libs_suffix}",
      "//third_party/angle:libGLESv2${angle_libs_suffix}",
    ]
  }
}