>>> libcoap v4.1.2 Extracting
gzip -d -c /usr/lfs/v0/rc-buildroot-test/scripts/instance-0/dl/libcoap/libcoap-v4.1.2.tar.gz | /usr/lfs/v0/rc-buildroot-test/scripts/instance-0/output/host/bin/tar --strip-components=1 -C /usr/lfs/v0/rc-buildroot-test/scripts/instance-0/output/build/libcoap-v4.1.2   -xf -
>>> libcoap v4.1.2 Patching
>>> libcoap v4.1.2 Updating config.sub and config.guess
for file in config.guess config.sub; do for i in $(find /usr/lfs/v0/rc-buildroot-test/scripts/instance-0/output/build/libcoap-v4.1.2 -name $file); do cp support/gnuconfig/$file $i; done; done
>>> libcoap v4.1.2 Configuring
>>> libcoap v4.1.2 Autoreconfiguring
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
configure.ac:145: error: possibly undefined macro: AC_MSG_WARN
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
configure.ac:158: error: possibly undefined macro: AC_MSG_ERROR
configure.ac:229: error: possibly undefined macro: AC_DEFINE
autoreconf: /usr/lfs/v0/rc-buildroot-test/scripts/instance-0/output/host/bin/autoconf failed with exit status: 1
make: *** [/usr/lfs/v0/rc-buildroot-test/scripts/instance-0/output/build/libcoap-v4.1.2/.stamp_configured] Error 1
make: Leaving directory `/usr/lfs/v0/rc-buildroot-test/scripts/instance-0/buildroot'