linux based android repo build boringssl libcrypto-host undefined reference to `sha512_block_data_order'

while compiling android firmware on linux Ubuntu 16.04 x86-64 host

uname -sm Linux x86_64 

following error occur in boringssl module:

out/host/linux-x86/obj/SHARED_LIBRARIES/libcrypto-host_intermediates/src/crypto/sha/sha512.o: In function `SHA512_Transform': /media/compilation/projects/android/beagle2/external/boringssl/src/crypto/sha/sha512.c:184: undefined reference to `sha512_block_data_order' 

and there is a long list of other symbols missing specifically for libcrypto-host module.

tried and solved by removing linux platform escape in "external/boringssl/Android.mk"

was:

ifneq ($(HOST_OS),linux) LOCAL_CFLAGS += -DOPENSSL_NO_ASM endif 

now just:

LOCAL_CFLAGS += -DOPENSSL_NO_ASM 

please confirm if it's the correct approach or there is another way to fix missing flag application?