Use "official" build LTO settings

brightray/brightray.gypi

@@ -274,8 +274,20 @@
               '-Wl,-O1',
               '-Wl,--as-needed',
               '-Wl,--gc-sections',
+              '-Wl,--icf=all',
             ],
           }],  # OS=="linux"
+          ['OS=="linux" and target_arch in ["ia32", "x64", "arm64"]', {
+            'cflags': [
+              '-flto',
+            ],
+            'ldflags': [
+              '-flto',
+              '-fuse-ld=gold',
+              '-Wl,-plugin-opt,O1',
+              '-Wl,-plugin-opt,-function-sections',
+            ],
+          }],
         ],
       },  # Release_Base
       'conditions': [

toolchain.gypi

@@ -104,8 +104,10 @@
     # Setup building with clang.
     ['clang==1', {
       'make_global_settings': [
+        ['AR', '<(make_clang_dir)/bin/llvm-ar'],
         ['CC', '<(make_clang_dir)/bin/clang'],
         ['CXX', '<(make_clang_dir)/bin/clang++'],
+        ['AR.host', '$(AR)'],
         ['CC.host', '$(CC)'],
         ['CXX.host', '$(CXX)'],
       ],