[Mac/GN] Initial framework bundle support.

build/config/mac/rules.gni

Index: build/config/mac/rules.gni
diff --git a/build/config/mac/rules.gni b/build/config/mac/rules.gni
index 32f3d99914d43f1bb0a161a2943faa95813522a8..7055e1eee1d368d552fd2a1b24a4b38b5aebe6cf 100644
--- a/build/config/mac/rules.gni
+++ b/build/config/mac/rules.gni
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/toolchain/toolchain.gni")
+
 mac_app_script = "//build/config/mac/mac_app.py"
 
 template("code_sign_mac") {
@@ -210,3 +212,145 @@ template("mac_app") {
     ]
   }
 }
+
+# Template to package a shared library into a Mac framework bundle.
+#
+# Arguments
+#
+#     info_plist:
+#         string, path to the Info.plist file that will be used for the bundle.
+#
+#     output_name:
+#         (optional) string, name of the generated framework without the
+#         .framework suffix. If omitted, defaults to target_name.
+#
+#     framework_version:
+#         (optional) string, version of the framework. Typically this is a
+#         single letter, like "A". If omitted, the Versions/ subdirectory
+#         structure will not be created, and build output will go directly
+#         into the framework subdirectory.
+template("mac_framework") {
+  assert(defined(invoker.deps),
+         "Dependencies must be specified for $target_name")
+  assert(defined(invoker.info_plist),
+         "The Info.plist file must be specified for $target_name")
+
+  _target_name = target_name
+  _output_name = target_name
+  if (defined(invoker.output_name)) {
+    _output_name = invoker.output_name
+  }
+  _framework_name = _output_name + ".framework"
+  _framework_version = ""
+  if (defined(invoker.framework_version)) {
+    _framework_version = invoker.framework_version
+  }
+  _framework_target = _output_name + "_framework"
+
+  _shared_library_target = target_name + "_shared_library"
+  _shared_library_bundle_data = _shared_library_target + "_bundle_data"
+
+  shared_library(_shared_library_target) {
+    visibility = [ ":$_shared_library_bundle_data" ]
+    forward_variables_from(invoker,
+                           "*",
+                           [
+                             "assert_no_deps",
+                             "data_deps",
+                             "info_plist",
+                             "output_name",
+                             "visibility",
+                           ])
+  }
+
+  bundle_data(_shared_library_bundle_data) {
+    visibility = [ ":$_framework_target" ]
+    forward_variables_from(invoker, [ "testonly" ])
+    sources = [
+      "$root_out_dir/${shlib_prefix}${_shared_library_target}${shlib_extension}",
+    ]
+    outputs = [
+      "{{bundle_executable_dir}}/$_output_name",
+    ]
+    public_deps = [
+      ":$_shared_library_target",
+    ]
+  }
+
+  _info_plist_target = target_name + "_info_plist"
+
+  # TODO(rsesek): Process Info.plist variables.
+
+  _info_plist_bundle_data = _info_plist_target + "_bundle_data"
+
+  bundle_data(_info_plist_bundle_data) {
+    visibility = [ ":$_framework_target" ]
+    forward_variables_from(invoker, [ "testonly" ])
+    sources = [
+      invoker.info_plist,
+    ]
+    outputs = [
+      "{{bundle_root_dir}}/Info.plist",
+    ]
+  }
+
+  create_bundle(_framework_target) {
+    visibility = [ ":$_target_name" ]
+    forward_variables_from(invoker,
+                           [
+                             "data_deps",
+                             "deps",
+                             "public_deps",
+                             "testonly",
+                             "visibility",
+                           ])
+
+    if (!defined(deps)) {
+      deps = []
+    }
+    deps += [
+      ":$_info_plist_bundle_data",
+      ":$_shared_library_bundle_data",
+    ]
+
+    bundle_root_dir = "$root_out_dir/$_framework_name"
+    if (_framework_version != "") {
+      bundle_root_dir += "/Versions/$_framework_version"
+    }
+    bundle_resources_dir = "$bundle_root_dir/Resources"
+    bundle_executable_dir = "$bundle_root_dir"
+  }
+
+  if (_framework_version != "") {
+    action(_target_name) {
+      forward_variables_from(invoker,
+                             [
+                               "visibility",
+                               "testonly",
+                             ])
+      script = "$root_out_dir/gyp-mac-tool"
+      outputs = [
+        "$root_out_dir/$_framework_name/Versions/Current",
+      ]
+      args = [
+        "package-framework",
+        "$_framework_name",
+        "$_framework_version",
+      ]
+      deps = [
+        ":$_framework_target",
+      ]
+    }
+  } else {
+    group(_target_name) {
+      forward_variables_from(invoker,
+                             [
+                               "visibility",
+                               "testonly",
+                             ])
+      deps = [
+        ":$_framework_target",
+      ]
+    }
+  }
+}