I have seen threads about this issue here, and I have tried the 
suggested fixes but I still get the same error. Basically I am using 
above version of ndk to compile a sample project composed of C and 
assembly files. I get the following error:

/tmp/ccEEI8oF.s: Assembler messages:
/tmp/ccEEI8oF.s:16: Error: selected processor does not support ARM mode 
`smc #0'
make: *** [obj/local/armeabi/objs/hello_tz/main_normal.o] Error 1


I have tried changing the -march=armv7-a. But I still get the error. 
Here is a copy of my Android.mk file:

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
# give module name
APP_PLATFORM := android-18
LOCAL_MODULE := hello_tz
$(warning This is in NDK_ROOT $(NDK_ROOT))
LOCAL_C_INCLUDES += 
$(NDK_ROOT)/platforms/$(APP_PLATFORM)/arch-arm/usr/include
APP_ABI := armeabi-v7a
#LOCAL_CFLAGS := -mcpu=cortex-m3 -mthumb -march=armv7-a 
-mtune=cortex-a15
#LOCAL_CFLAGS := -mcpu=cortex-a15 -march=armv7-a
LOCAL_CFLAGS := -march=armv7-a -D__ASSEMBLY__ -mabi=aapcs-linux 
-gdwarf-2 -Wall -Wundef -Wstrict-prototypes -Wno-trigrap
hs -fno-strict-aliasing -fno-common 
-Werror-implicit-function-declaration -Wno-format-security 
-fno-delete-null-pointer-
checks -Os -Wno-maybe-uninitialized -marm -fno-dwarf2-cfi-asm 
-fstack-protector -mabi=aapcs-linux -mno-thumb-interwork -
funwind-tables -D__LINUX_ARM_ARCH__=7 -mcpu=cortex-a15 -msoft-float 
-Uarm -Wframe-larger-than=1024 -Wno-unused-but-set-v
ariable -fomit-frame-pointer -g -Wdeclaration-after-statement 
-Wno-pointer-sign -fno-strict-overflow -fconserve-stack -D
CC_HAVE_ASM_GOTO
# list your C files to compile
FILE_LIST := $(patsubst %.c,%.c.arm,$(wildcard $(LOCAL_PATH)/*.c))
#$(warning here is what is in FILE_LIST after an attempt to collect all 
the C files$(FILE_LIST))
FILE_LIST += $(wildcard $(LOCAL_PATH)/*.s)
#$(warning here is what is in FILE_LIST after an attempt to collect all 
the S files$(FILE_LIST))
LOCAL_SRC_FILES := $(FILE_LIST:$(LOCAL_PATH)/%=%)
# this option will build executables instead of building library for 
android application.
include $(BUILD_EXECUTABLE)