Openwrt trunk build openvswitch

OpenWrt-libtool: link: mips-openwrt-linux-musl-gcc -Wstrict-prototypes -Wall -Wextra -Wno-sign-compare -Wpointer-arith -Wformat-security -Wswitch-enum -Wunused-parameter -Wbad-function-cast -Wcast-align -Wmissing-prototypes -Wmissing-field-initializers -fno-strict-aliasing -fomit-frame-pointer -Os -pipe -mno-branch-likely -mips32r2 -mtune=34kc -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -msoft-float -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z -Wl,now -Wl,-z -Wl,relro -mno-mips16 -mno-interlink-mips16 -flto -std=gnu99 -znow -zrelro -o utilities/.libs/ovs-appctl utilities/ovs-appctl.o  -L/Volumes/OpenWrt/openwrt/staging_dir/target-mips_34kc_musl-1.1.11/usr/lib -L/Volumes/OpenWrt/openwrt/staging_dir/target-mips_34kc_musl-1.1.11/lib -L/Volumes/OpenWrt/openwrt/staging_dir/toolchain-mips_34kc_gcc-5.2.0_musl-1.1.11/usr/lib -L/Volumes/OpenWrt/openwrt/staging_dir/toolchain-mips_34kc_gcc-5.2.0_musl-1.1.11/lib lib/.libs/libopenvswitch.so
lib/.libs/libopenvswitch.so: undefined reference to `__atomic_load_8'
lib/.libs/libopenvswitch.so: undefined reference to `__atomic_store_8'
collect2: error: ld returned 1 exit status
make[6]: *** [utilities/ovs-appctl] Error 1
make[5]: *** [all-recursive] Error 1
make[4]: *** [all] Error 2
make[3]: *** [/Volumes/OpenWrt/openwrt/build_dir/target-mips_34kc_musl-1.1.11/openvswitch-2.4.0/.built] Error 2
make[3]: Leaving directory `/Volumes/OpenWrt/openwrt/feeds/packages/net/openvswitch'
make[2]: *** [package/feeds/packages/openvswitch/compile] Error 2
make[2]: Leaving directory `/Volumes/OpenWrt/openwrt'
make[1]: *** [/Volumes/OpenWrt/openwrt/staging_dir/target-mips_34kc_musl-1.1.11/stamp/.package_compile] Error 2
make[1]: Leaving directory `/Volumes/OpenWrt/openwrt'
make: *** [world] Error 2
alvins-mbp-2:openwrt alvintandejun$