Build starboard shared library for linux-x64x11 (#4215)

b/365546355

Add build configuration for building starboard shared library for
linux-x64x11

Note on how to build locally using same script as CI:
chrobalt/build/gn.py -p linux-x64x11 -C devel --no-check
autoninja -C out/linux-x64x11_devel/  starboard/libstarboard.so.17

.github/config/linux.json

@@ -13,7 +13,8 @@
         "gpu_unittests",
         "gin_unittests",
         "blink_unittests",
-        "content_shell"
+        "content_shell",
+        "starboard/libstarboard.so.17"
     ],
     "includes": [
       {

.gn

@@ -166,3 +166,12 @@ exec_script_whitelist =
       "//tools/grit/grit_rule.gni",
       "//tools/gritsettings/BUILD.gn",
     ]
+
+import("//chrobalt/build/configs/chrobalt.gni")
+if (chrobalt) {
+  exec_script_whitelist += [
+    "//starboard/tools/BUILD.gn",
+    "//starboard/build/config/sabi/BUILD.gn",
+    "//starboard/build/platform_path.gni",
+  ]
+}

BUILD.gn

@@ -838,6 +838,9 @@ group("gn_all") {
       deps += [ "//components/cronet:cronet_tests" ]
     }
   }
+  if (chrobalt) {
+    deps += [ "//chrobalt:gn_all" ]
+  }
 }
 
 # All Rust targets. This is provided for convenience while developing Rust to

build/config/BUILDCONFIG.gn

@@ -327,6 +327,13 @@ is_posix = !is_win && !is_fuchsia
 # requirement and just need to add a config everywhere, reference it as a
 # sub-config of an existing one, most commonly the main "compiler" one.
 
+import("//chrobalt/build/configs/chrobalt.gni")
+# TODO(b/371589344): Fix android build configs.
+if (chrobalt && target_os != "android") {
+  import("//chrobalt/build/configs/initialize_variables.gni")
+  import("//chrobalt/build/configs/variables.gni")
+}
+
 # Holds all configs used for running the compiler.
 default_compiler_configs = [
   "//build/config:feature_flags",
@@ -354,6 +361,10 @@ default_compiler_configs = [
   "//build/config/sanitizers:default_sanitizer_flags",
 ]
 
+if (chrobalt) {
+  default_compiler_configs += [ "//chrobalt/build/configs:chrobalt_config" ]
+}
+
 if (is_win) {
   default_compiler_configs += [
     "//build/config/win:default_cfg_compiler",

starboard/build/config/clang.gni → chrobalt/BUILD.gn

@@ -1,4 +1,4 @@
-# Copyright 2023 The Cobalt Authors. All Rights Reserved.
+# Copyright 2024 The Cobalt Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,14 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import("//starboard/build/toolchain/starboard_toolchains.gni")
-
-declare_args() {
-  clang_revision = "17-init-8029-g27f27d15-3"
-}
-
-default_clang_base_path = "$starboard_toolchains_path/x86_64-linux-gnu-clang-chromium-${clang_revision}"
-
-declare_args() {
-  clang_base_path = default_clang_base_path
+group("gn_all") {
+  # TODO(b/371589344): Fix android build configs.
+  if (target_os != "android") {
+    deps = [ "//starboard($starboard_toolchain)" ]
+  }
 }

chrobalt/build/configs/BUILD.gn

@@ -0,0 +1,20 @@
+# Copyright 2024 The Cobalt Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+config("chrobalt_config") {
+  # TODO(b/371589344): Fix android build configs.
+  if (target_os != "android") {
+    configs = [ "//${starboard_path}/platform_configuration" ]
+  }
+}

chrobalt/build/configs/chrobalt.gni

@@ -0,0 +1,18 @@
+# Copyright 2024 The Cobalt Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Get the path to the starboard implementation and include its GN
+# configuration.
+
+chrobalt = true

chrobalt/build/configs/initialize_variables.gni

@@ -0,0 +1,75 @@
+# Copyright 2024 The Cobalt Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Get the path to the starboard implementation and include its GN
+# configuration.
+
+declare_args() {
+  # Temporary gn arg for work on base/net update.
+  cobalt_pending_clean_up = true
+
+  build_type = "devel"
+
+  is_starboard = true
+
+  # Used to guard any customizations to Chromium or third-party code for builds
+  # where the Starboard porting layer is not used.
+  is_native_target_build = false
+
+  is_internal_build = getenv("COBALT_USE_INTERNAL_BUILD") == "1"
+
+  using_old_compiler = false
+
+  build_with_separate_cobalt_toolchain = true
+}
+
+assert(!(is_starboard && is_native_target_build),
+       "Targets should be built for Starboard or natively, but not both")
+
+# Used to guard customizations to Chromium or third-party code. We historically
+# used is_starboard for this, but we developed the need to distinguish between
+# a) customizations that should only be used for Starboard builds and b)
+# those that should only be used for native target builds (see
+# is_native_target_build). use_cobalt_customizations is a convenience in the
+# sense that it is functionally equivalent to
+# (is_starboard || is_native_target_build), but it should be used in lieu of
+# that since the intent is more clear.
+use_cobalt_customizations = true
+
+# TODO(b/371589344): Investigate if we need cobalt_is_debug which
+# avoids overriding chrome's is_debug.
+is_devel = build_type == "devel"
+is_qa = build_type == "qa"
+is_gold = build_type == "gold"
+
+# TODO(b/372141961): Investigate setting chromium flag
+# is_debug = true for debug builds
+# assert(is_debug || is_devel || is_qa || is_gold)
+
+if (is_mac) {
+  declare_args() {
+    use_system_xcode = true
+  }
+}
+
+# Get the path to the starboard implementation and include its GN
+# configuration.
+import("//starboard/build/platform_path.gni")
+if (build_with_separate_cobalt_toolchain) {
+  cobalt_toolchain = "//$starboard_path/toolchain:cobalt"
+  starboard_toolchain = "//$starboard_path/toolchain:starboard"
+} else {
+  cobalt_toolchain = default_toolchain
+  starboard_toolchain = cobalt_toolchain
+}

chrobalt/build/configs/linux-x64x11/args.gn

@@ -1,5 +1,24 @@
 target_os = "linux"
 target_cpu = "x64"
+target_platform = "linux-x64x11"
+
+# Chromium flag overrides needed for building libstarboard
+
+# ../../starboard/shared/starboard/player/job_queue.h:156:15:
+# error: [chromium-rawptr] Use raw_ptr<T> instead of a raw pointer.
+# JobOwner* owner;
+enable_check_raw_ptr_fields = false
+
+# ../../starboard/linux/shared/decode_target_internal.h:22:1:
+# error: [chromium-style] Complex class/struct needs an explicit out-of-line destructor.
+clang_use_chrome_plugins = false
+
+# V8 override
+# # Enable WASM and install WebAssembly global.
+v8_enable_webassembly = true
+
+# TODO(b/218889313): All flags below this line need to be revisited
+# carefully and eliminated if unnecessary.
 
 enable_nacl=false
 use_dawn=false

chrobalt/build/configs/variables.gni

@@ -0,0 +1,38 @@
+# Copyright 2024 The Cobalt Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Get the path to the starboard implementation and include its GN
+# configuration.
+
+
+import("//$starboard_path/platform_configuration/configuration.gni")
+
+sb_is_modular = sb_is_evergreen || build_with_separate_cobalt_toolchain
+
+declare_args() {
+  use_tsan = false
+}
+declare_args() {
+  # TODO(b/371589344) : Enable ASAN
+  use_asan = false
+}
+
+# TODO(b/371263047): Resolve issues and build evergreen.
+enable_evergreen_code = false
+
+# TODO(b/371606611): Build test targets with cobalt toolchain
+enable_test_targets = false
+
+# TODO(b/371642925): Fix install targets for chrobalt
+enable_install_targets = false

starboard/BUILD.gn

@@ -21,16 +21,21 @@ group("gn_all") {
 
   deps = [
     ":default",
-    "//starboard/client_porting/eztime:eztime_test",
     "//starboard/client_porting/icu_init",
-    "//starboard/examples/glclear:starboard_glclear_example",
-    "//starboard/examples/hello_world:starboard_hello_world_example",
-    "//starboard/examples/window:starboard_window_example",
-    "//starboard/extension:extension_test",
-    "//starboard/nplb",
   ]
-  if (sb_is_evergreen_compatible && current_toolchain == starboard_toolchain) {
-    deps += [ "//starboard/nplb/nplb_evergreen_compat_tests" ]
+  if (enable_test_targets) {
+    if (sb_is_evergreen_compatible &&
+        current_toolchain == starboard_toolchain) {
+      deps += [ "//starboard/nplb/nplb_evergreen_compat_tests" ]
+    }
+    deps += [
+      "//starboard/client_porting/eztime:eztime_test",
+      "//starboard/examples/glclear:starboard_glclear_example",
+      "//starboard/examples/hello_world:starboard_hello_world_example",
+      "//starboard/examples/window:starboard_window_example",
+      "//starboard/extension:extension_test",
+      "//starboard/nplb",
+    ]
   }
 
   if (has_platform_targets) {
@@ -63,18 +68,16 @@ group("gn_all") {
   }
 
   if (!sb_is_evergreen) {
-    if (sb_is_evergreen_compatible) {
+    if (sb_is_evergreen_compatible && enable_evergreen_code) {
       deps += [
         "//starboard/elf_loader:elf_loader_test_install($starboard_toolchain)",
         "//starboard/loader_app:installation_manager_test_install($starboard_toolchain)",
         "//starboard/loader_app:reset_evergreen_update_test_install($starboard_toolchain)",
       ]
-
       if (current_toolchain == starboard_toolchain) {
-        deps += [
-          "//third_party/crashpad/crashpad/client",
-          "//third_party/lz4_lib:lz4",
-        ]
+        deps += [ "//third_party/lz4_lib:lz4" ]
+        deps += [ "//third_party/crashpad/crashpad/client" ]
+
         data_deps = [
           "//starboard/loader_app($starboard_toolchain)",
           "//third_party/crashpad/crashpad/handler:crashpad_handler(//$starboard_path/toolchain:native_target)",
@@ -144,13 +147,14 @@ group("starboard_group") {
       "//starboard/common",
     ]
 
-    if (!sb_is_modular || sb_is_evergreen) {
-      if (sb_is_evergreen_compatible &&
-          current_toolchain == starboard_toolchain) {
-        public_deps += [ "//starboard/crashpad_wrapper" ]
-      } else {
-        public_deps +=
-            [ "//starboard/crashpad_wrapper:wrapper_stub" ]
+    if (enable_evergreen_code) {
+      if (!sb_is_modular || sb_is_evergreen) {
+        if (sb_is_evergreen_compatible &&
+            current_toolchain == starboard_toolchain) {
+          public_deps += [ "//starboard/crashpad_wrapper" ]
+        } else {
+          public_deps += [ "//starboard/crashpad_wrapper:wrapper_stub" ]
+        }
       }
     }
 

starboard/android/shared/platform_configuration/BUILD.gn

@@ -51,7 +51,7 @@ config("platform_configuration") {
     "mediandk",
   ]
 
-  if (!cobalt_fastbuild && (is_debug || is_devel)) {
+  if (is_debug || is_devel) {
     cflags += [ "-g" ]
   }
 

starboard/build/config/BUILD.gn

@@ -14,6 +14,7 @@
 
 import("//build/config/compiler/compiler.gni")
 import("//starboard/build/config/os_definitions.gni")
+import("//starboard/build/config/toolchain_variables.gni")
 
 # TODO: b/319085130 - This macro is only used temporarily to enable compilation
 #                     of upstream libraries being updated in Cobalt. Use it as

starboard/build/config/base_configuration.gni

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import("//starboard/build/config/clang.gni")
+import("//build/config/clang/clang.gni")
 import("//starboard/content/fonts/font_configuration.gni")
 
 # NOTE:
@@ -150,32 +150,8 @@ declare_args() {
   # Enables an NPLB audit of C++20 support.
   sb_enable_cpp20_audit = true
 
-  # Enable WASM and install WebAssembly global.
-  v8_enable_webassembly = false
-
   # Set this to true if the modular toolchain linker doesn't strip
   # all unused symbols and nplb fails to link.
   # TODO: b/297808555 Remove this flag after nplb is fixed
   sb_has_unused_symbol_issue = false
 }
-
-if (current_toolchain == starboard_toolchain &&
-    build_with_separate_cobalt_toolchain) {
-  declare_args() {
-    # Target-specific configurations for executable targets.
-    executable_configs =
-        [ "//build/config/gcc:rpath_for_built_shared_libraries" ]
-
-    # Target-specific configurations for shared_library targets.
-    shared_library_configs =
-        [ "//build/config/gcc:rpath_for_built_shared_libraries" ]
-  }
-} else {
-  declare_args() {
-    # Target-specific configurations for executable targets.
-    executable_configs = []
-
-    # Target-specific configurations for shared_library targets.
-    shared_library_configs = []
-  }
-}