diff --git a/toolchain/finish-setup.xml b/toolchain/finish-setup.xml
index 1e814ade3..a99c118fd 100644
--- a/toolchain/finish-setup.xml
+++ b/toolchain/finish-setup.xml
@@ -40,8 +40,9 @@
 
 
 
-<set name="LIBEXTRA" value=".iphonesim-64" if="iphonesim"/>
-<set name="LIBEXTRA" value=".iphonesim" if="iphonesim" unless="HXCPP_M64"/>
+<set name="LIBEXTRA" value=".iphonesim-64" if="iphonesim" unless="HXCPP_ARM64"/>
+<set name="LIBEXTRA" value=".iphonesim-arm64" if="iphonesim HXCPP_ARM64"/>
+<set name="LIBEXTRA" value=".iphonesim" if="iphonesim" unless="HXCPP_M64 || HXCPP_ARM64"/>
 <section if="iphoneos">
 	<set name="LIBEXTRA" value=".iphoneos-v7" if="HXCPP_ARMV7"/>
 	<set name="LIBEXTRA" value=".iphoneos-v7s" if="HXCPP_ARMV7S"/>
diff --git a/toolchain/iphonesim-toolchain.xml b/toolchain/iphonesim-toolchain.xml
index e9d443e5b..f088c85cb 100644
--- a/toolchain/iphonesim-toolchain.xml
+++ b/toolchain/iphonesim-toolchain.xml
@@ -70,7 +70,8 @@
 
   <outflag value="-o"/>
   <ext value=".o"/>
-  <objdir value="obj/iphonesim${OBJGCC}${OBJDBG}/" />
+  <objdir value="obj/iphonesim${OBJGCC}${OBJDBG}-arm64/" if="HXCPP_ARM64" />
+  <objdir value="obj/iphonesim${OBJGCC}${OBJDBG}/" unless="HXCPP_ARM64" />
 </compiler>
 
 <linker id="dll" exe="g++" >
@@ -78,8 +79,9 @@
   <exe name="xcrun --sdk iphonesimulator${IPHONE_VER} clang++" />
   <flag value="-dynamiclib"/>
   <flag value="-arch"/>
-  <flag value="i386" unless="HXCPP_M64"/>
-  <flag value="x86_64" if="HXCPP_M64"/>
+  <flag value="i386" unless="HXCPP_M64 || HXCPP_ARM64"/>
+  <flag value="x86_64" if="HXCPP_M64" unless="HXCPP_ARM64"/>
+  <flag value="arm64" if="HXCPP_ARM64"/>
   <flag value="-isysroot"/>
   <flag value="${DEVELOPER_DIR}/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator${IPHONE_VER}.sdk"/>
   <flag value="-Wl,-undefined,dynamic_lookup"/>