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Note that libpcap links with libnl by default - and that this shouldn't 

break binary compatibility, so that's not a reason to disable that.
This commit is contained in:
Guy Harris 2009-07-15 14:19:13 -07:00
parent 9c54f8726d
commit 7b6487a8a5
1 changed files with 20 additions and 0 deletions
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README.linux
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@ -69,6 +69,26 @@ file says:
file linux/Documentation/networking/filter.txt for more information.
If unsure, say N.
Note that, by default, libpcap will, if libnl is present, build with it;
it uses libnl to support monitor mode on mac80211 devices. There is a
configuration option to disable building with libnl, but, if that option
is chosen, the monitor-mode APIs (as used by tcpdump's "-I" flag, and as
will probably be used by other applications in the future) won't work
properly on mac80211 devices.
Linux's run-time linker allows shared libraries to be linked with other
shared libraries, which means that if an older version of a shared
library doesn't require routines from some other shared library, and a
later version of the shared library does require those routines, the
later version of the shared library can be linked with that other shared
library and, if it's otherwise binary-compatible with the older version,
can replace that older version without breaking applications built with
the older version, and without breaking configure scripts or the build
procedure for applications whose configure script doesn't use the
pcap-config script if they build with the shared library. (The build
procedure for applications whose configure scripts use the pcap-config
script if present will not break even if they build with the static
library.)
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