Applying ./patches/100-daemon.patch using plaintext: 
patching file ntpclient.c
make[3]: Entering directory '/immortalwrt/openwrt-18.06-k5.4/build_dir/target-arc_archs_glibc/ntpclient-2015'
ccache_cc -Os -pipe -matomic -mcpu=archs -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -ffile-prefix-map=/immortalwrt/openwrt-18.06-k5.4/build_dir/target-arc_archs_glibc/ntpclient-2015=ntpclient-2015 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro  -I/immortalwrt/openwrt-18.06-k5.4/staging_dir/toolchain-arc_archs_gcc-8.4.0_glibc/usr/include -I/immortalwrt/openwrt-18.06-k5.4/staging_dir/toolchain-arc_archs_gcc-8.4.0_glibc/include  -std=c99   -D_POSIX_C_SOURCE=199309 -D_BSD_SOURCE -W -Wall   -O2 -DPRECISION_SIOCGSTAMP -DENABLE_DEBUG -DENABLE_REPLAY   -c -o ntpclient.o ntpclient.c
In file included from /immortalwrt/openwrt-18.06-k5.4/staging_dir/toolchain-arc_archs_gcc-8.4.0_glibc/include/bits/libc-header-start.h:33,
                 from /immortalwrt/openwrt-18.06-k5.4/staging_dir/toolchain-arc_archs_gcc-8.4.0_glibc/include/stdio.h:27,
                 from ntpclient.c:32:
/immortalwrt/openwrt-18.06-k5.4/staging_dir/toolchain-arc_archs_gcc-8.4.0_glibc/include/features.h:187:3: warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Wcpp]
 # warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
   ^~~~~~~
ntpclient.c: In function 'set_time':
ntpclient.c:184:25: warning: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type '__time_t' {aka 'long long int'} [-Wformat=]
   printf("set time to %lu.%.9lu\n", tv_set.tv_sec, tv_set.tv_nsec);
                       ~~^           ~~~~~~~~~~~~~
                       %llu
ntpclient.c: In function 'get_packet_timestamp':
ntpclient.c:254:18: error: 'SIOCGSTAMP' undeclared (first use in this function); did you mean 'SIOCGARP'?
  if ( ioctl(usd, SIOCGSTAMP, &udp_arrival) < 0 ) {
                  ^~~~~~~~~~
                  SIOCGARP
ntpclient.c:254:18: note: each undeclared identifier is reported only once for each function it appears in
ntpclient.c: In function 'main':
ntpclient.c:661:5: warning: ignoring return value of 'daemon', declared with attribute warn_unused_result [-Wunused-result]
     daemon(0, 0);
     ^~~~~~~~~~~~
make[3]: *** [<builtin>: ntpclient.o] Error 1
make[3]: Leaving directory '/immortalwrt/openwrt-18.06-k5.4/build_dir/target-arc_archs_glibc/ntpclient-2015'
make[2]: *** [Makefile:60: /immortalwrt/openwrt-18.06-k5.4/build_dir/target-arc_archs_glibc/ntpclient-2015/.built] Error 2
time: package/feeds/packages/ntpclient/compile#0.19#0.05#0.32