A couple of fixes for using Makefile.standalone on Mac.
(*) PNaCl toolchain_build builds 64-bit libraries for LLVM on Mac.
That won't link with subzero code if subzero is built with -m32,
so add an option to override the -m32.
(*) include locale header
(*) Mark xMacroIntegrityCheck unused to avoid clang compiler warning.
(*) virtual dtor, for inheritable class
(*) Mark compare function const
BUG=none
R=stichnot@chromium.org
Review URL: https://codereview.chromium.org/428733003
diff --git a/src/IceTargetLoweringX8632.cpp b/src/IceTargetLoweringX8632.cpp
index 8123e74..7c60d08 100644
--- a/src/IceTargetLoweringX8632.cpp
+++ b/src/IceTargetLoweringX8632.cpp
@@ -143,7 +143,7 @@
// could get out of sync if enum values are reordered or if entries
// are added or deleted. This dummy function uses static_assert to
// ensure everything is kept in sync.
-void xMacroIntegrityCheck() {
+void __attribute__((unused)) xMacroIntegrityCheck() {
// Validate the enum values in FCMPX8632_TABLE.
{
// Define a temporary set of enum values based on low-level
