Linux: Enable ODR violation detection.

build/config/compiler/BUILD.gn

Index: build/config/compiler/BUILD.gn
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 164b97d26260f3e238834c36ffad1e9e53037f5c..48950664f6b98d7494d81fe82651786850e592a0 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -71,7 +71,7 @@ if (!is_win) {
 #
 # Base compiler configuration.
 #
-# See also "runtime_library" below for related stuff and a discusison about
+# See also "runtime_library" below for related stuff and a discussion about
 # where stuff should go. Put warning related stuff in the "warnings" config.
 
 config("compiler") {
@@ -385,6 +385,13 @@ config("compiler") {
       #"-Wl,--threads",
       #"-Wl,--thread-count=4",
     ]
+
+    # TODO(thestig): Make this flag work with GN.
+    #if (!is_chromeos && !(is_asan || is_lsan || is_tsan || is_msan)) {
+    #  ldflags += [
+    #    "-Wl,--detect-odr-violations",
+    #  ]
+    #}
   }
 
   if (linux_use_bundled_binutils) {