Support Big Endian in ICU: part 3

BUILD.gn

 # Copyright 2014 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("//third_party/icu/config.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 551 matching lines @@
 if (is_android && enable_java_templates) {
   android_assets("icu_assets") {
     if (icu_use_data_file) {
       sources = [ "$root_out_dir/icudtl.dat" ]
       deps = [ ":icudata" ]
       disable_compression = true
     }
   }
 }
 
+# TODO(GYP): Gyp has considerations here for QNX and for the host toolchain
+#  that have not been ported over.
+data_bundle = "common/icudtl.dat"
+if (is_android) {
+  data_bundle = "android/icudtl.dat"
+} else if (current_cpu == "mips" || current_cpu == "mips64") {
+  data_bundle = "common/icudtb.dat"
+} else {
+  data_bundle = "common/icudtl.dat"
+}
+
 # TODO(GYP) support use_system_icu.
 if (icu_use_data_file) {
   if (is_ios) {
     bundle_data("icudata") {
-      sources = [ "common/icudtl.dat" ]
+      sources = [ "$data_bundle" ]
       outputs = [ "{{bundle_resources_dir}}/{{source_file_part}}" ]
     }
   } else {
     copy("icudata") {
-      if (is_android) {
-        sources = [
-          "android/icudtl.dat",
-        ]
-      } else {
-        sources = [
-          "common/icudtl.dat",
-        ]
-      }
-
-      outputs = [
-        "$root_out_dir/icudtl.dat",
-      ]
-
-      data = [
-        "$root_out_dir/icudtl.dat",
-      ]
+      sources = [ "$data_bundle" ]
+      outputs = [ "$root_out_dir/{{source_file_part}}" ]
     }
   }
 } else {
   if (is_win) {
     # On Windows the target DLL is pre-built so just use a copy rule.
     copy("icudata") {
       sources = [
         "windows/icudt.dll",
       ]
       outputs = [
         "$root_out_dir/icudt.dll",
       ]
-
-      data = [
-        "$root_out_dir/icudtl.dll",
-      ]
     }
   } else {
+    if (current_cpu == "mips" || current_cpu == "mips64") {
+      data_assembly = "$target_gen_dir/icudtb_dat.S"
+    } else {
+      data_assembly = "$target_gen_dir/icudtl_dat.S"
+    }
+    action("make_data_assembly") {
+      script = "scripts/make_data_assembly.py"
+      inputs = [ "$data_bundle" ]
+      outputs = [ "$data_assembly" ]
+      args = [
+        rebase_path(data_bundle, root_build_dir),
+        rebase_path(data_assembly, root_build_dir),
+      ]
+      if (is_mac) {
+        args += [ "--mac" ]
+      }
+    }
+
     source_set("icudata") {
-      # These are hand-generated, but will do for now.
-      #
-      # TODO(GYP): Gyp has considerations here for QNX and for the host toolchain
-      #  that have not been ported over.
-      if (is_linux) {
-        sources = [
-          "linux/icudtl_dat.S",
-        ]
-      } else if (is_mac) {
-        sources = [
-          "mac/icudtl_dat.S",
-        ]
-      } else if (is_android) {
-        sources = [
-          "android/icudtl_dat.S",
-        ]
-      } else {
-        assert(false, "No icu data for this platform")
-      }
+      sources = [ "$data_assembly" ]
       defines = [ "U_HIDE_DATA_SYMBOL" ]
+      deps = [ ":make_data_assembly", ]
     }
   }
 }