make[4]: Entering directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/dhcpcd-6.4.3'
ccache_cc  -Os -pipe -matomic -marchs -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result  -Wformat -Werror=format-security -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro  -std=c99  -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/target-arc_archs_uClibc-1.0.14/usr/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/target-arc_archs_uClibc-1.0.14/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/usr/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/include  -D_BSD_SOURCE -D_XOPEN_SOURCE=700 -DINET -DINET6 -I./crypt -c dhcpcd.c -o dhcpcd.o
In file included from /build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/include/sys/socket.h:39:0,
                 from dhcpcd.c:34:
ipv6.h:153:41: error: invalid application of 'sizeof' to incomplete type 'struct in6_pktinfo'
  unsigned char sndbuf[CMSG_SPACE(sizeof(struct in6_pktinfo))];
                                         ^
ipv6.h:145:38: error: invalid application of 'sizeof' to incomplete type 'struct in6_pktinfo'
 #define IP6BUFLEN (CMSG_SPACE(sizeof(struct in6_pktinfo)) + \
                                      ^
ipv6.h:156:23: note: in expansion of macro 'IP6BUFLEN'
  unsigned char rcvbuf[IP6BUFLEN];
                       ^
ccache_cc  -Os -pipe -matomic -marchs -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result  -Wformat -Werror=format-security -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro  -std=c99  -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/target-arc_archs_uClibc-1.0.14/usr/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/target-arc_archs_uClibc-1.0.14/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/usr/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/include  -D_BSD_SOURCE -D_XOPEN_SOURCE=700 -DINET -DINET6 -I./crypt -c if.c -o if.o
Makefile:82: recipe for target 'dhcpcd.o' failed
make[4]: *** [dhcpcd.o] Error 1
make[4]: *** Waiting for unfinished jobs....
In file included from /build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/include/sys/socket.h:39:0,
                 from if.c:31:
ipv6.h:153:41: error: invalid application of 'sizeof' to incomplete type 'struct in6_pktinfo'
  unsigned char sndbuf[CMSG_SPACE(sizeof(struct in6_pktinfo))];
                                         ^
ipv6.h:145:38: error: invalid application of 'sizeof' to incomplete type 'struct in6_pktinfo'
 #define IP6BUFLEN (CMSG_SPACE(sizeof(struct in6_pktinfo)) + \
                                      ^
ipv6.h:156:23: note: in expansion of macro 'IP6BUFLEN'
  unsigned char rcvbuf[IP6BUFLEN];
                       ^
Makefile:82: recipe for target 'if.o' failed
make[4]: *** [if.o] Error 1
make[4]: Leaving directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/dhcpcd-6.4.3'
Makefile:63: recipe for target '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/dhcpcd-6.4.3/.built' failed
make[3]: *** [/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/dhcpcd-6.4.3/.built] Error 2