=== modified file 'configure/os/CONFIG.Common.ios-x86'
--- configure/os/CONFIG.Common.ios-x86	2014-02-17 16:12:53 +0000
+++ configure/os/CONFIG.Common.ios-x86	2014-12-04 19:24:21 +0000
@@ -13,10 +13,5 @@
 OP_SYS_CFLAGS += -mios-simulator-version-min=$(IOS_DEPLOYMENT_TARGET)
 OP_SYS_LDFLAGS += -mios-simulator-version-min=$(IOS_DEPLOYMENT_TARGET)
 
-#
-# Architecture-specific information
-#
-ARCH_CLASS = i386
-
 # Include definitions common to all iOS targets
 include $(CONFIG)/os/CONFIG.Common.iosCommon

=== added file 'configure/os/CONFIG_SITE.Common.ios-x86'
--- configure/os/CONFIG_SITE.Common.ios-x86	1970-01-01 00:00:00 +0000
+++ configure/os/CONFIG_SITE.Common.ios-x86	2014-12-04 19:25:04 +0000
@@ -0,0 +1,19 @@
+# CONFIG_SITE.Common.ios-x86
+#
+# $Revision-Id$
+#
+# Site-specific settings for ios-x86 target builds
+#-------------------------------------------------------
+
+# Which x86 instruction set(s) to generate code for:
+#   The iPhone Simulator now supports both 32-bit and 64-bit
+#   instruction sets since the iPhone 6 uses a 64-bit CPU.
+#
+#   Apple's compilers can build for multiple architectures,
+#   generating a Universal binary.  This is larger and takes
+#   longer to compile, but runs efficiently on all devices.
+
+#ARCH_CLASS = i386
+ARCH_CLASS = i386 x86_64
+#ARCH_CLASS = x86_64
+