diff -r ea3a1793b501 Makefile
--- a/Makefile	Tue May 21 16:27:42 2019 +0200
+++ b/Makefile	Tue May 28 15:41:23 2019 +0200
@@ -23,7 +23,6 @@
 USE_RC_SUBR=	epmd
 
 GNU_CONFIGURE=	yes
-MAKE_JOBS_UNSAFE=yes
 
 OPTIONS_SUB=	yes
 SUB_FILES=	pkg-message
@@ -64,7 +63,7 @@
 OPTIONS_EXCLUDE_DragonFly=	HIPE NATIVE SCTP
 # ld(1) fails to link probes: missing __dtrace_erlang___* symbols
 OPTIONS_EXCLUDE_aarch64=	DTRACE
-OPTIONS_EXCLUDE_armv6=		DTRACE
+OPTIONS_EXCLUDE_armv6=		DTRACE SMP NATIVE
 OPTIONS_EXCLUDE_armv7=		DTRACE
 OPTIONS_EXCLUDE_i386=		DTRACE
 
@@ -111,6 +110,15 @@
 MAKE_ARGS+=	ARCH=arm
 .endif
 
+.if ${ARCH} == armv6
+#CFLAGS+=	-O0
+BUILD_DEPENDS+=	${LOCALBASE}/bin/clang80:devel/llvm80
+RUN_DEPENDS+= 	${LOCALBASE}/bin/clang80:devel/llvm80
+CONFIGURE_ENV=  CC=${LOCALBASE}/bin/clang80 \
+		CXX=${LOCALBASE}/bin/clang++80 \
+		CPP=${LOCALBASE}/bin/clang-cpp80
+.endif
+
 pre-configure:
 	@cd ${WRKSRC} && ./otp_build autoconf
 
@@ -142,7 +150,7 @@
 	@${ECHO_CMD} "MANPATH ${PREFIX}/lib/erlang/man" > ${WRKDIR}/erlang.conf
 	${INSTALL_DATA} ${WRKDIR}/erlang.conf ${STAGEDIR}${PREFIX}/etc/man.d/erlang.conf
 	for SECTION in 1 3 4 6 7; do \
-		${MKDIR} -p ${STAGEDIR}${PREFIX}/lib/erlang/man/man$${SECTION}; \
+		${MKDIR} ${STAGEDIR}${PREFIX}/lib/erlang/man/man$${SECTION}; \
 	  	${FIND} ${WRKSRC}/erts ${WRKSRC}/lib -type f | ${GREP} doc/man$${SECTION} \
 			| ${XARGS} -J % ${CP} -v % ${STAGEDIR}${PREFIX}/lib/erlang/man/man$${SECTION}; \
 	done
@@ -178,4 +186,12 @@
 	@cd ${STAGEDIR}${PREFIX}; ${FIND} ${DOCSDIR_REL}/* -name \*.pdf \
 		| ${SORT} >> ${TMPPLIST}
 
+test:
+	if [ ! -e ${WRKDIR}/.tests_build_done ] ; then ERL_TOP=${WRKSRC} && \
+		export ERL_TOP && ${MAKE_CMD} -C ${WRKSRC} tests && \
+		touch ${WRKDIR}/.tests_build_done ; fi
+	cd ${WRKSRC}/release/tests/test_server && \
+		${WRKSRC}/bin/erl -noshell -s ts install -s ts run all_tests \
+		-s init stop
+
 .include <bsd.port.post.mk>
diff -r ea3a1793b501 files/patch-erts_emulator_hipe_hipe_arm.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/files/patch-erts_emulator_hipe_hipe_arm.c	Tue May 28 15:41:23 2019 +0200
@@ -0,0 +1,37 @@
+--- erts/emulator/hipe/hipe_arm.c.orig	2019-01-08 14:39:47.000000000 +0100
++++ erts/emulator/hipe/hipe_arm.c	2019-05-21 17:32:44.470563000 +0200
+@@ -34,7 +34,17 @@
+ /* Flush dcache and invalidate icache for a range of addresses. */
+ void hipe_flush_icache_range(void *address, unsigned int nbytes)
+ {
+-#if defined(__ARM_EABI__)
++#if defined(__FreeBSD__)
++# if defined(__clang__)
++    void __clear_cache(void *start, void *end);
++    __clear_cache(address, address+nbytes);
++# elif defined(__GNUC__)
++    __builtin__clear_cache(address, address+nbytes);
++# else
++#  error "compiler is not supported"
++# endif
++#else
++# if defined(__ARM_EABI__)
+     register unsigned long beg __asm__("r0") = (unsigned long)address;
+     register unsigned long end __asm__("r1") = (unsigned long)address + nbytes;
+     register unsigned long flg __asm__("r2") = 0;
+@@ -42,13 +52,14 @@
+     __asm__ __volatile__("swi 0"	/* sys_cacheflush() */
+ 			 : "=r"(beg)
+ 			 : "0"(beg), "r"(end), "r"(flg), "r"(scno));
+-#else
++# else
+     register unsigned long beg __asm__("r0") = (unsigned long)address;
+     register unsigned long end __asm__("r1") = (unsigned long)address + nbytes;
+     register unsigned long flg __asm__("r2") = 0;
+     __asm__ __volatile__("swi 0x9f0002"	/* sys_cacheflush() */
+ 			 : "=r"(beg)
+ 			 : "0"(beg), "r"(end), "r"(flg));
++# endif
+ #endif
+ }
+