>>> linuxptp 2.0 Extracting
gzip -d -c /home/buildroot/buildroot-test/instance-0/dl/linuxptp/linuxptp-2.0.tgz | tar --strip-components=1 -C /home/buildroot/buildroot-test/instance-0/output/build/linuxptp-2.0   -xf -
>>> linuxptp 2.0 Patching

Applying 0001-missing.h-drop-clock_nanosleep-replacement.patch using patch: 
patching file missing.h
>>> linuxptp 2.0 Configuring
>>> linuxptp 2.0 Building
PATH="/home/buildroot/buildroot-test/instance-0/output/host/bin:/home/buildroot/buildroot-test/instance-0/output/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games" CROSS_COMPILE="/home/buildroot/buildroot-test/instance-0/output/host/bin/aarch64-linux-gnu-" KBUILD_OUTPUT=/home/buildroot/buildroot-test/instance-0/output/host/aarch64-buildroot-linux-gnu/sysroot /usr/bin/make -j2 prefix=/usr EXTRA_CFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O2  " EXTRA_LDFLAGS="" -C /home/buildroot/buildroot-test/instance-0/output/build/linuxptp-2.0 all
make[1]: Entering directory `/home/buildroot/buildroot-test/instance-0/output/build/linuxptp-2.0'
DEPEND timemaster.c
DEPEND sysoff.c
DEPEND pmc_common.c
DEPEND pmc.c
DEPEND phc_ctl.c
DEPEND phc2sys.c
DEPEND nsm.c
DEPEND hwstamp_ctl.c
DEPEND version.c
DEPEND util.c
DEPEND unicast_service.c
DEPEND unicast_fsm.c
DEPEND unicast_client.c
DEPEND uds.c
DEPEND udp6.c
DEPEND udp.c
DEPEND tsproc.c
DEPEND transport.c
DEPEND tlv.c
DEPEND telecom.c
DEPEND tc.c
DEPEND stats.c
DEPEND sk.c
DEPEND servo.c
DEPEND rtnl.c
DEPEND raw.c
DEPEND p2p_tc.c
DEPEND ptp4l.c
DEPEND print.c
DEPEND pqueue.c
DEPEND port_signaling.c
DEPEND port.c
DEPEND pi.c
DEPEND phc.c
DEPEND nullf.c
DEPEND ntpshm.c
DEPEND msg.c
DEPEND mmedian.c
DEPEND mave.c
DEPEND linreg.c
DEPEND hash.c
DEPEND fsm.c
DEPEND filter.c
DEPEND fault.c
DEPEND e2e_tc.c
DEPEND config.c
DEPEND clockcheck.c
DEPEND clockadj.c
DEPEND clock.c
DEPEND bmc.c
make[1]: Leaving directory `/home/buildroot/buildroot-test/instance-0/output/build/linuxptp-2.0'
make[1]: Entering directory `/home/buildroot/buildroot-test/instance-0/output/build/linuxptp-2.0'
/home/buildroot/buildroot-test/instance-0/output/host/bin/aarch64-linux-gnu-gcc -Wall -DVER=2.0  -D_GNU_SOURCE -DHAVE_CLOCK_ADJTIME -DHAVE_POSIX_SPAWN -I/home/buildroot/buildroot-test/instance-0/output/host/aarch64-buildroot-linux-gnu/sysroot/usr/include -DHAVE_ONESTEP_SYNC  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O2     -c -o ptp4l.o ptp4l.c
/home/buildroot/buildroot-test/instance-0/output/host/bin/aarch64-linux-gnu-gcc -Wall -DVER=2.0  -D_GNU_SOURCE -DHAVE_CLOCK_ADJTIME -DHAVE_POSIX_SPAWN -I/home/buildroot/buildroot-test/instance-0/output/host/aarch64-buildroot-linux-gnu/sysroot/usr/include -DHAVE_ONESTEP_SYNC  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O2     -c -o bmc.o bmc.c
/home/buildroot/buildroot-test/instance-0/output/host/bin/aarch64-linux-gnu-gcc -Wall -DVER=2.0  -D_GNU_SOURCE -DHAVE_CLOCK_ADJTIME -DHAVE_POSIX_SPAWN -I/home/buildroot/buildroot-test/instance-0/output/host/aarch64-buildroot-linux-gnu/sysroot/usr/include -DHAVE_ONESTEP_SYNC  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O2     -c -o clock.o clock.c
In file included from clock.c:20:
/home/buildroot/buildroot-test/instance-0/output/host/aarch64-buildroot-linux-gnu/sysroot/usr/include/linux/net_tstamp.h:158:2: error: unknown type name 'clockid_t'
  clockid_t clockid; /* reference clockid */
  ^~~~~~~~~
/home/buildroot/buildroot-test/instance-0/output/host/bin/aarch64-linux-gnu-gcc -Wall -DVER=2.0  -D_GNU_SOURCE -DHAVE_CLOCK_ADJTIME -DHAVE_POSIX_SPAWN -I/home/buildroot/buildroot-test/instance-0/output/host/aarch64-buildroot-linux-gnu/sysroot/usr/include -DHAVE_ONESTEP_SYNC  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O2     -c -o clockadj.o clockadj.c
make[1]: *** [clock.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory `/home/buildroot/buildroot-test/instance-0/output/build/linuxptp-2.0'
make: *** [/home/buildroot/buildroot-test/instance-0/output/build/linuxptp-2.0/.stamp_built] Error 2
make: Leaving directory `/home/buildroot/buildroot-test/instance-0/buildroot'