On 4/2/24 01:49, Craig Small via Net-snmp-coders wrote:
Hello All,
I was attempting to compile the git head of net-snmp. One big change
is that uses netlink sockets instead of reading /proc/net/*
The issue is the API is different to the library I can see.
mibgroup/mibII/tcpTable.c:631:12: error: too few arguments to function
‘nl_geterror’
631 | return nl_geterror();
| ^~~~~~~~~~~
And indeed nl_geterror() requires a int:
https://github.com/tgraf/libnl/blob/master/include/netlink/errno.h#L56
<https://github.com/tgraf/libnl/blob/master/include/netlink/errno.h#L56>
extern const char * nl_geterror(int);
So I'm not exactly sure what netlink library is being used here. I
cannot disable this feature either:
mibgroup/if-mib/data_access/interface_linux.c:27:2: error: #error
libnl-3 is required. Please install the libnl-3 and libnl-route-3
development packages and remove --without-nl from the configure options
if necessary.
27 | #error libnl-3 is required. Please install the libnl-3 and
libnl-route-3 development packages and remove --without-nl from the
configure options if necessary.
| ^~~~~
The Net-SNMP configure script detects whether libnl-1 / libnl-3 is
present. The above error message comes from the libnl-3 compat code and
hence means that libnl-3 was not detected. I'm referring to this code:
if test "x$ac_cv_header_netlink_netlink_h" = xyes; then
AC_EGREP_HEADER([nl_socket_free], [netlink/socket.h],
[AC_DEFINE([HAVE_LIBNL3], [1],
[Define to 1 if <netlink/netlink.h>
provides the
libnl3 API])])
fi
Can you please check the configure script logs to see why libnl-3 was
not detected?
Thanks,
Bart.
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