build php-7.0.31 on arm without gcc

I built php-7.0.31 on armv7 without gcc by modifying Makefile.inc as
follows:

#MODULES+= gcc4
# for atomic builtins
#MODGCC4_ARCHS+= arm
#MODGCC4_LANGS+= c++

Can someone verify that this is appropriate and make it a permanent change.