Index: share/mk/bsd.sys.mk
===================================================================
--- share/mk/bsd.sys.mk
+++ share/mk/bsd.sys.mk
@@ -186,6 +186,11 @@
 .endif
 .endif	# gcc
 
+# GCC's own arm_neon.h triggers -Wmissing-braces
+.if ${MACHINE_ARCH} == "aarch64" && ${COMPILER_TYPE} == "gcc"
+CWARNFLAGS+=	-Wno-error=missing-braces
+.endif
+
 # How to handle FreeBSD custom printf format specifiers.
 .if ${COMPILER_TYPE} == "clang"
 FORMAT_EXTENSIONS=	-D__printf__=__freebsd_kprintf__