Linux create_sdk GN build for host

utils/dartanalyzer/BUILD.gn

Index: utils/dartanalyzer/BUILD.gn
diff --git a/utils/dartanalyzer/BUILD.gn b/utils/dartanalyzer/BUILD.gn
new file mode 100644
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+++ b/utils/dartanalyzer/BUILD.gn
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+# Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+import("../invoke_dart.gni")
+
+group("dartanalyzer") {
+  deps = [
+    ":generate_dartanalyzer_snapshot",
+    ":generate_summary_spec",
+    ":generate_summary_strong",
+  ]
+}
+
+analyzer_files = exec_script("../../tools/list_files.py",
+                             ["\\.dart\$",
+                             rebase_path("../../pkg/analyzer")],
+                             "list lines")
+
+application_snapshot("generate_dartanalyzer_snapshot") {
+  main_dart = "../../pkg/analyzer_cli/bin/analyzer.dart"
+  name = "dartanalyzer"
+  cli_files = exec_script("../../tools/list_files.py",
+                          ["\\.dart\$",
+                           rebase_path("../../pkg/analyzer_cli")],
+                          "list lines")
+  inputs = cli_files + analyzer_files
+}
+
+sdk_lib_files = exec_script("../../tools/list_files.py",
+                            ["\\.dart\$",
+                             rebase_path("../../sdk/lib")],
+                            "list lines")
+
+template("generate_summary") {
+  assert(defined(invoker.type), "Must specify the summary type")
+  type = invoker.type
+  assert((type == "spec") || (type == "strong"))
+  invoke_dart(target_name) {
+    inputs = sdk_lib_files + analyzer_files
+
+    output = "$root_gen_dir/$type.sum"
+    outputs = [
+      output
+    ]
+
+    dot_packages = rebase_path("../../.packages")
+    build_sdk_summaries =
+        rebase_path("../../pkg/analyzer/tool/summary/build_sdk_summaries.dart")
+    abs_output = rebase_path(output)
+
+    args = [
+      "--packages=$dot_packages",
+      build_sdk_summaries,
+      "build-$type",
+      abs_output,
+      rebase_path("../../sdk"),
+    ]
+  }
+}
+
+generate_summary("generate_summary_spec") {
+  type = "spec"
+}
+
+generate_summary("generate_summary_strong") {
+  type = "strong"
+}