chrony needs timepps.h (shipped with net-misc/pps-tools) to build pps support. If the header is not available pps is automatically disabled (irrespective of USE flag). Otherwise starting chrony with a pps refclock results in: Nov 05 13:56:52 kestrel chronyd[6650]: chronyd version 2.4 starting (+CMDMON +NTP +REFCLOCK +RTC +PRIVDROP -SCFILTER -SECHASH +ASYNCDNS +IPV6 -DEBUG) Nov 05 13:56:52 kestrel chronyd[6648]: refclock driver PPS is not compiled in Please add a DEPEND on net-misc/pps-tools The build log doesn't tell you this little secret at all...: * Package: net-misc/chrony-2.4 * Repository: gentoo * Maintainer: jer@gentoo.org * USE: abi_x86_64 adns amd64 caps cmdmon elibc_glibc ipv6 kernel_linux ntp phc pps readline refclock rtc userland_GNU * FEATURES: fakeroot preserve-libs sandbox splitdebug userpriv usersandbox * Package: net-misc/chrony-2.4 * Repository: gentoo * Maintainer: jer@gentoo.org * USE: abi_x86_64 adns amd64 caps cmdmon elibc_glibc ipv6 kernel_linux ntp phc pps readline refclock rtc userland_GNU * FEATURES: fakeroot preserve-libs sandbox splitdebug userpriv usersandbox >>> Unpacking source... >>> Unpacking chrony-2.4.tar.gz to /var/tmp/portage/net-misc/chrony-2.4/work >>> Source unpacked in /var/tmp/portage/net-misc/chrony-2.4/work >>> Preparing source in /var/tmp/portage/net-misc/chrony-2.4/work/chrony-2.4 ... >>> Source prepared. >>> Configuring source in /var/tmp/portage/net-misc/chrony-2.4/work/chrony-2.4 ... * ./configure --without-editline --docdir=/usr/share/doc/chrony-2.4 --chronysockdir=/run/chrony --mandir=/usr/share/man --prefix=/usr --sysconfdir=/etc/chrony --disable-sechash --without-nss --without-tomcrypt Configuring for Linux-x86_64 Checking for x86_64-pc-linux-gnu-gcc : Yes Checking for 64-bit time_t : Yes NTP time mapped to 1966-11-18T18:42:35Z/2102-12-26T01:10:51Z Checking for math : No Checking for math in -lm : Yes Checking for <stdint.h> : Yes Checking for <inttypes.h> : Yes Checking for struct in_pktinfo : Yes Checking for IPv6 support : Yes Checking for struct in6_pktinfo : No Checking for struct in6_pktinfo with _GNU_SOURCE : Yes Checking for getaddrinfo() : Yes Checking for pthread : Yes Checking for arc4random_buf() : No Checking for <sys/timepps.h> : No Checking for <timepps.h> : No Checking for libcap : Yes Checking for <linux/rtc.h> : Yes Checking for <linux/ptp_clock.h> : Yes Checking for clock_gettime() : Yes Checking for sched_setscheduler() : Yes Checking for mlockall() : Yes Checking for readline : Yes Features : +CMDMON +NTP +REFCLOCK +RTC +PRIVDROP -SCFILTER -SECHASH +ASYNCDNS +READLINE +IPV6 -DEBUG Creating Makefile Creating doc/Makefile Creating test/unit/Makefile >>> Source configured.
Fixed in 2.4-r1. Thanks for the report!
