Re: [chrony-users] Compiling chrony 4.0 with nts support on Ubuntu 18.04

[Vincent Blut <vincent.debian@xxxxxxx>]

Hi,

Le 2021-04-04 22:44, Uwe Fechner a écrit :
> Dear all,
> 
> I am trying to configure chrony with nts support, but so far it doesn't work:
> 
> ufechner@TUD277255:~/00Software/chrony-4.0$ ./configure
> Configuring for  Linux-x86_64
> Checking for /usr/bin/gcc : Yes
> Checking for hardening compiler options : Yes
> Checking for -fstack-protector-strong : Yes
> Checking for pkg-config : Yes
> Checking for 64-bit time_t : Yes
> NTP time mapped to 1971-04-17T20:28:57Z/2107-05-25T02:57:13Z
> Checking for math : No
> Checking for math in -lm : 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 clock_gettime() : Yes
> Checking for getaddrinfo() : Yes
> Checking for pthread : Yes
> Checking for arc4random_buf() : No
> Checking for getrandom() : Yes
> Checking for recvmmsg() : Yes
> Checking for SW/HW timestamping : Yes
> Checking for other timestamping options : Yes
> Checking for <sys/timepps.h> : No
> Checking for <timepps.h> : No
> Checking for libcap : No
> Checking for <linux/rtc.h> : Yes
> Checking for <linux/ptp_clock.h> : Yes
> Checking for pthread_setschedparam() : Yes
> Checking for mlockall() : Yes
> Checking for setrlimit(RLIMIT_MEMLOCK, ...) : Yes
> Checking for editline : No
> Checking for nettle : Yes
> Checking for CMAC in nettle : No
> Checking for gnutls : No
> Features : +CMDMON +NTP +REFCLOCK +RTC -PRIVDROP -SCFILTER -SIGND +ASYNCDNS -NTS -READLINE +SECHASH +IPV6 -DEBUG
> Creating Makefile
> Creating doc/Makefile
> Creating test/unit/Makefile
> 
> 
> I already installed nettle-dev and libtomcrypt-dev, but this does not seam to be sufficient.
> 
> What else do I need to install to be able to compile chrony 4.0 with nts support?

You need libgnutls28-dev, but as far as I remember, the version provided in
Ubuntu 18.04 lacks support for TLS 1.3 which is required by the NTS standard.

> Uwe Fechner

Cheers,
Vincent

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