diff --git a/core/clang/HOST_CROSS_windows.mk b/core/clang/HOST_CROSS_x86.mk
similarity index 68%
rename from core/clang/HOST_CROSS_windows.mk
rename to core/clang/HOST_CROSS_x86.mk
index 74adb58..b78a074 100644
--- a/core/clang/HOST_CROSS_windows.mk
+++ b/core/clang/HOST_CROSS_x86.mk
@@ -37,20 +37,20 @@
   $(CLANG_CONFIG_x86_HOST_CROSS_COMBO_EXTRA_LDFLAGS) \
   -target $(CLANG_CONFIG_x86_HOST_CROSS_TRIPLE)
 
-CLANG_HOST_CROSS_GLOBAL_CFLAGS := \
-  $(call convert-to-host-clang-flags,$(HOST_CROSS_GLOBAL_CFLAGS)) \
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_CFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_CFLAGS)) \
   $(CLANG_CONFIG_x86_HOST_CROSS_EXTRA_CFLAGS)
 
-CLANG_HOST_CROSS_GLOBAL_CONLYFLAGS := \
-  $(call convert-to-host-clang-flags,$(HOST_CROSS_GLOBAL_CONLYFLAGS)) \
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_CONLYFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_CONLYFLAGS)) \
   $(CLANG_CONFIG_x86_HOST_CROSS_EXTRA_CONLYFLAGS)
 
-CLANG_HOST_CROSS_GLOBAL_CPPFLAGS := \
-  $(call convert-to-host-clang-flags,$(HOST_CROSS_GLOBAL_CPPFLAGS)) \
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_CPPFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_CPPFLAGS)) \
   $(CLANG_CONFIG_x86_HOST_CROSS_EXTRA_CPPFLAGS)
 
-CLANG_HOST_CROSS_GLOBAL_LDFLAGS := \
-  $(call convert-to-host-clang-flags,$(HOST_CROSS_GLOBAL_LDFLAGS)) \
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_LDFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_LDFLAGS)) \
   $(CLANG_CONFIG_x86_HOST_CROSS_EXTRA_LDFLAGS)
 
-HOST_CROSS_LIBPROFILE_RT := $(LLVM_RTLIB_PATH)/libclang_rt.profile-i686.a
+$(clang_2nd_arch_prefix)HOST_CROSS_LIBPROFILE_RT := $(LLVM_RTLIB_PATH)/libclang_rt.profile-i686.a
diff --git a/core/clang/HOST_CROSS_x86_64.mk b/core/clang/HOST_CROSS_x86_64.mk
new file mode 100644
index 0000000..b6f2de9
--- /dev/null
+++ b/core/clang/HOST_CROSS_x86_64.mk
@@ -0,0 +1,56 @@
+
+include $(BUILD_SYSTEM)/clang/x86_64.mk
+
+CLANG_CONFIG_x86_64_HOST_CROSS_TRIPLE := x86_64-pc-mingw32
+
+CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_ASFLAGS := \
+  $(CLANG_CONFIG_EXTRA_ASFLAGS) \
+  $(CLANG_CONFIG_HOST_CROSS_EXTRA_ASFLAGS) \
+  $(CLANG_CONFIG_x86_64_EXTRA_ASFLAGS) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_COMBO_EXTRA_ASFLAGS) \
+  -target $(CLANG_CONFIG_x86_64_HOST_CROSS_TRIPLE)
+
+CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_CFLAGS := \
+  $(CLANG_CONFIG_EXTRA_CFLAGS) \
+  $(CLANG_CONFIG_HOST_CROSS_EXTRA_CFLAGS) \
+  $(CLANG_CONFIG_x86_64_EXTRA_CFLAGS) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_COMBO_EXTRA_CFLAGS) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_ASFLAGS)
+
+CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_CONLYFLAGS := \
+  $(CLANG_CONFIG_EXTRA_CONLYFLAGS) \
+  $(CLANG_CONFIG_HOST_CROSS_EXTRA_CONLYFLAGS) \
+  $(CLANG_CONFIG_x86_64_EXTRA_CONLYFLAGS) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_COMBO_EXTRA_CONLYFLAGS)
+
+CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_CPPFLAGS := \
+  $(CLANG_CONFIG_EXTRA_CPPFLAGS) \
+  $(CLANG_CONFIG_HOST_CROSS_EXTRA_CPPFLAGS) \
+  $(CLANG_CONFIG_x86_64_EXTRA_CPPFLAGS) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_COMBO_EXTRA_CPPFLAGS) \
+  -target $(CLANG_CONFIG_x86_64_HOST_CROSS_TRIPLE)
+
+CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_LDFLAGS := \
+  $(CLANG_CONFIG_EXTRA_LDFLAGS) \
+  $(CLANG_CONFIG_HOST_CROSS_EXTRA_LDFLAGS) \
+  $(CLANG_CONFIG_x86_64_EXTRA_LDFLAGS) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_COMBO_EXTRA_LDFLAGS) \
+  -target $(CLANG_CONFIG_x86_64_HOST_CROSS_TRIPLE)
+
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_CFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_CFLAGS)) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_CFLAGS)
+
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_CONLYFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_CONLYFLAGS)) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_CONLYFLAGS)
+
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_CPPFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_CPPFLAGS)) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_CPPFLAGS)
+
+$(clang_2nd_arch_prefix)CLANG_HOST_CROSS_GLOBAL_LDFLAGS := \
+  $(call convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_CROSS_GLOBAL_LDFLAGS)) \
+  $(CLANG_CONFIG_x86_64_HOST_CROSS_EXTRA_LDFLAGS)
+
+$(clang_2nd_arch_prefix)HOST_CROSS_LIBPROFILE_RT := $(LLVM_RTLIB_PATH)/libclang_rt.profile-x86_64.a
diff --git a/core/clang/config.mk b/core/clang/config.mk
index 5014a6f..fb3886e 100644
--- a/core/clang/config.mk
+++ b/core/clang/config.mk
@@ -149,8 +149,13 @@
 include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
 endif
 
-ifdef HOST_CROSS_OS
-include $(BUILD_SYSTEM)/clang/HOST_CROSS_$(HOST_CROSS_OS).mk
+ifdef HOST_CROSS_ARCH
+clang_2nd_arch_prefix :=
+include $(BUILD_SYSTEM)/clang/HOST_CROSS_$(HOST_CROSS_ARCH).mk
+ifdef HOST_CROSS_2ND_ARCH
+clang_2nd_arch_prefix := $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)
+include $(BUILD_SYSTEM)/clang/HOST_CROSS_$(HOST_CROSS_2ND_ARCH).mk
+endif
 endif
 
 # TARGET config