NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.
ntp-4.2.8p15 was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.
Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.
script uses the
string to make decisions on a number of configurable items.
While in a 'regular' build we can, for example, compile and run a test program to determine some of this information we can compile but we cannot run a test program that is being cross-compiled.
In these cases, you should look at the
file to for hints on how you should proceed.
Please submit reports at http://bugs.ntp.org
to improve the ability to cross-compile ntp.
Basic Cross-compile instructions
If you are using a GNU toolchain and the cross-compile tools have been installed under "proper" names, this is pretty easy.
Get the CPU-Vendor-OS strings for the build
machines. In GNU AutoConf parlance, the build
machine is the machine you will be compiling on, and the host
machine is where you expect the binaries to run.
script is not in your path, the copy NTP uses is in
In a "proper" cross-compile environment, there will be named toolchains for a variety of platforms, including the build
environment and at least one host
machine that has a cross-compile environment for
, you should find the following executables on your system:
gcc (which is probably symlinked to
To build a FreeBSD version of
on the Solaris machine you could:
> cd ntp-dev
> mkdir A.i386-unknown-freebsd6.2
> cd A.i386-unknown-freebsd6.2
> ../configure --host=i386-unknown-freebsd6.2 --build=sparc-sun-solaris2.10
> make DESTDIR=`pwd`/:Built install
and you will have all of the pieces ready to be installed under the
If you do not have a GNU cross-compile toolchain installed, it's still pretty easy. In this case, I recommend installing symlinks to the needed tools using the naming style described above. In most cases the
part of the "triple" is not significant, so you can use whatever name works for you in that case in the above examples.
Building for VxWorks
for VxWorks used to be easy. Please see VxWorksPortingIssues
for more information.