Index: make/platform/clang_windows.mk
===================================================================
--- /dev/null
+++ make/platform/clang_windows.mk
@@ -0,0 +1,154 @@
+
+Description = compiler runtime library for clang/Windows
+
+###
+
+CheckArchSource := $(ProjSrcRoot)/make/platform/clang_windows_test_input.c
+CheckArch = \
+ $(shell \
+ result="" ; \
+ for arch in $(1) ; do \
+ if $(CC) -target $$arch-windows-msvc -c $(CheckArchSource) \
+ -o /dev/null >/dev/null 2>&1 ; then \
+ result="$$result$$arch " ; \
+ else \
+ printf 1>&2 "warning: windows.mk: dropping arch '$$arch' from lib\n"; \
+ fi \
+ done ; \
+ echo $$result)
+
+###
+
+AR := ar
+CC := clang
+RANLIB := ranlib
+STRIP := strip
+
+CFLAGS.base := -fms-compatibility -ffreestanding -fomit-frame-pointer -Wall -Werror
+
+CFLAGS.armv7.sysroot :=
+ifneq ($(LLVM_WINDOWS_ARM_NT_SYSROOT),)
+ CFLAGS.armv7.sysroot := -isystem $(LLVM_WINDOWS_ARM_NT_SYSROOT)/usr/include -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE
+endif
+
+CFLAGS.i686.sysroot :=
+ifneq ($(LLVM_WINDOWS_X86_SYSROOT),)
+ CFLAGS.i686.sysroot := -isystem $(LLVM_WINDOWS_X86_SYSROOT)/usr/include
+endif
+
+CFLAGS.x86_64.sysroot :=
+ifneq ($(LLVM_WINDOWS_X86_64_SYSROOT),)
+ CFLAGS.x86_64.sysroot := -isystem $(LLVM_WINDOWS_X86_64_SYSROOT)/usr/include
+endif
+
+# NOTE: the use of the itanium environment is due to the ARM assembly syntax;
+# the environment here is fully compatible with "msvc". Explicitly add a -mcpu
+# option to enable the use of sdiv/udiv on the target.
+Platform.clang_windows.CFLAGS.pic.armv7 := -target thumbv7-windows-itanium $(CFLAGS.armv7.sysroot) -Os -fPIC $(CFLAGS.base) -mfloat-abi=hard -mcpu=cortex-a7 -mfpu=neon
+Platform.clang_windows.CFLAGS.pic.i686 := -target i686-windows-msvc $(CFLAGS.i686.sysroot) -Os -fPIC $(CFLAGS.base)
+Platform.clang_windows.CFLAGS.pic.x86_64 := -target x86_64-windows-msvc $(CFLAGS.x86_64.sysroot) -Os -fPIC $(CFLAGS.base)
+
+###
+
+# Unwanted functions:
+# + apple_versioning - Apple specific
+# + enable_execute_stack - Windows disables executable stacks
+# + eprintf - Apple specific
+# + trampoline_step - PPC specific
+
+# TODO: _Atomic collides with the MSVC extension, resulting in compilation
+# failures for atomic routines. Once that has been resolved, it should be added
+# to the common functions.
+FUNCTIONS.common := absvdi2 absvsi2 absvti2 \
+ adddf3 addsf3 \
+ addvdi3 addvsi3 addvti3 \
+ ashldi3 ashlti3 \
+ ashrdi3 ashrti3 \
+ clear_cache \
+ clzdi2 clzsi2 clzti2 \
+ cmpdi2 cmpti2 \
+ comparedf2 comparesf2 comparetf2 \
+ ctzdi2 ctzsi2 ctzti2 \
+ divdc3 divdf3 divdi3 \
+ divmoddi4 divmodsi4 \
+ divsc3 divsf3 divsi3 \
+ divti3 divxc3 \
+ extendsfdf2 \
+ ffsdi2 ffsti2 \
+ fixdfdi fixdfsi fixdfti \
+ fixsfdi fixsfsi fixsfti \
+ fixunsdfdi fixunsdfsi fixunsdfti \
+ fixunssfdi fixunssfsi fixunssfti \
+ fixunsxfdi fixunsxfsi fixunsxfti \
+ fixxfdi fixxfti \
+ floatdidf floatdisf floatdixf \
+ floatsidf floatsisf \
+ floattidf floattisf floattixf \
+ floatundidf floatundisf floatundixf \
+ floatunsidf floatunsisf \
+ floatuntidf floatuntisf floatuntixf \
+ gcc_personality_v0 \
+ int_util \
+ lshrdi3 lshrti3 \
+ moddi3 modsi3 modti3 \
+ muldc3 muldf3 muldi3 \
+ mulodi4 mulosi4 muloti4 \
+ mulsc3 mulsf3 \
+ multi3 \
+ mulvdi3 mulvsi3 mulvti3 \
+ mulxc3 \
+ negdf2 negdi2 \
+ negsf2 \
+ negti2 \
+ negvdi2 negvsi2 negvti2 \
+ paritydi2 paritysi2 parityti2 \
+ popcountdi2 popcountsi2 popcountti2 \
+ powidf2 powisf2 powitf2 powixf2 \
+ subdf3 subsf3 \
+ subvdi3 subvsi3 subvti3 \
+ truncdfsf2 \
+ ucmpdi2 ucmpti2 \
+ udivdi3 \
+ udivmoddi4 udivmodsi4 udivmodti4 \
+ udivsi3 udivti3 \
+ umoddi3 umodsi3 umodti3 \
+ $(NULL)
+
+# Unwanted Functions:
+# + aeabi_*: Windows does not conform to AEABI
+# + {restore,save}_vfp_d8_d15_regs: designed for Thumb1 SJLJ exceptions
+# + switch{16,32,8,u8}: designed for Thumb1 CPUs to generate switch tables
+# + sync_synchronize: for Thumb1 GCC __sync_synchronize intrinsic usage
+# + *vfp: designed for Thumb1 CPUs with VFPv2
+
+FUNCTIONS.armv7 := bswapdi2 bswapsi2 \
+ sync_fetch_and_add_4 \
+ sync_fetch_and_sub_4 \
+ sync_fetch_and_and_4 \
+ sync_fetch_and_or_4 \
+ sync_fetch_and_xor_4 \
+ sync_fetch_and_nand_4 \
+ sync_fetch_and_max_4 \
+ sync_fetch_and_umax_4 \
+ sync_fetch_and_min_4 \
+ sync_fetch_and_umin_4 \
+ sync_fetch_and_add_8 \
+ sync_fetch_and_sub_8 \
+ sync_fetch_and_and_8 \
+ sync_fetch_and_or_8 \
+ sync_fetch_and_xor_8 \
+ sync_fetch_and_nand_8 \
+ sync_fetch_and_max_8 \
+ sync_fetch_and_umax_8 \
+ sync_fetch_and_min_8 \
+ sync_fetch_and_umin_8 \
+ $(NULL)
+
+FUNCTIONS.pic := $(FUNCTIONS.common)
+FUNCTIONS.pic.armv7 := $(FUNCTIONS.common) $(FUNCTIONS.armv7)
+
+Arch :=
+Configs := pic
+
+Arch.pic := $(call CheckArch,armv7 i686 x86_64)
+