The MS-DOS support in libpcap was recently removed in the main branch; the
comment for the pull request is "MSDOS packet driver interface is no longer
testable", and the comment for the first commit is "MSDOS packet driver
interface is no longer testable, anyone needs it can use a previous version".
We've also removed support for older versions of the Linux kernel in recent
releases.
We now also require C99 support by the compiler and library.
Should we also consider removing support for some older UN*X platforms, such as:
SunOS prior to SunOS 4 - pcap-nit.c; the last such version, SunOS 3.5,
was released in January 1988
SunOS 4.x - pcap-snit.c; the last such version, SunOS 4.1.5, was
released in November 1994
HP-UX 9 - some code in pcap-dlpi.c; the last such version, 9.10, was
released in early-to-mid 1995
HP-UX 10 prior to 10.20 - some code in pcap-dlpi.c; - the only such
version, 10.0, was released in 1995
SINIX - some code in pcap-dlpi.c; - the last release, Reliant UNIX
5.45, was released some time in the early 2000s (?)
IRIX - pcap-snoop.c; - the last update was released some time in the
mid-to-late 2000s (?)
DEC OSF/1^W^WDigital UNIX^WTru64 UNIX - pcap-pf.c; the last release,
Tru64 UNIX 5.1B-6, was released in October 2010
(release information from that famously reliable site, Wikipedia:
https://www.theonion.com/wikipedia-celebrates-750-years-of-american-independence-1819568571
and some Google searching).
We don't have any buildbots doing tests of those platforms, and I don't know
when the last test of whether libpcap will compile or work on those platforms
was done.
However, there may well be people using them - pull request #1203:
https://github.com/the-tcpdump-group/libpcap/pull/1203
was a change to fix libpcap so that it builds on Mac OS X 10.4, the last
version of which, 10.5.8, was released on August 13, 2009.
So the questions are:
1) Which of these have a significant user base?
2) Which of them have a user base willing to provide a buildbot so that
we check for code rot?
(Note that users in group 1) but not in group 2) are at risk of code rot either
rendering libpcap unbuildable or making the result of the compile not work
correctly.)
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