commit 4c502dc54042174af6d54291ea65130f0c8b6500
author Ryan Macnak <rmacnak@google.com> Wed Apr 19 12:32:05 2017 -0700
committer Ryan Macnak <rmacnak@google.com> Mon Apr 24 08:57:13 2017 -0700
tree 4076fcf61984f53d83cc2cbc656a26ce85fa4955
parent 0c58ba6c427ada175b37a213f6451b3b5f3d6d57

Enable link-time dead code elimination.

Change-Id: I53139b5f875487eb471c97ba4e77c8805dad9e8b

config/BUILD.gn

diff --git a/config/BUILD.gn b/config/BUILD.gn
index da6c0ac..68bad4c 100644
--- a/config/BUILD.gn
+++ b/config/BUILD.gn
@@ -63,8 +63,18 @@
 }
 
 config("release") {
-  cflags = [ "-O2" ]
   defines = [ "NDEBUG=1" ]
+  cflags = [
+    "-O2",
+    "-fdata-sections",
+    "-ffunction-sections",
+  ]
+
+  if (current_os == "mac") {
+    ldflags = [ "-Wl,-dead_strip" ]
+  } else {
+    ldflags = [ "-Wl,--gc-sections" ]
+  }
 }
 
 config("no_exceptions") {