Merge "Skip AS detection when using --enable-external-build"

build/make/configure.sh

@@ -1209,6 +1209,9 @@ EOF
       check_gcc_machine_option avx
       check_gcc_machine_option avx2
 
+      if enabled external_build; then
+        log_echo "  skipping assembler detection"
+      else
         case "${AS}" in
           auto|"")
             which nasm >/dev/null 2>&1 && AS=nasm
@@ -1227,6 +1230,7 @@ EOF
             ;;
         esac
         log_echo "  using $AS"
+      fi
       [ "${AS##*/}" = nasm ] && add_asflags -Ox
       AS_SFX=.asm
       case  ${tgt_os} in