+++ This bug was initially created as a clone of Bug #2001430 +++

During the a rebuild of net-snmp-5.9.1-6.el9, the sources try to use the non-existing ERR_GET_FUNC function:

snmp_openssl.c: In function 'netsnmp_openssl_err_log':
snmp_openssl.c:949:36: warning: implicit declaration of function 'ERR_GET_FUNC'; did you mean 'ERR_GET_LIB'? [-Wimplicit-function-declaration]
  949 |                  ERR_GET_LIB(err), ERR_GET_FUNC(err), ERR_GET_REASON(err));
      |                                    ^~~~~~~~~~~~
      |                                    ERR_GET_LIB

This leads to a link failure later:

/usr/bin/ld: /tmp/ccKI9GVH.ltrans6.ltrans.o: in function `netsnmp_openssl_err_log':
/builddir/build/BUILD/net-snmp-5.9.1/snmplib/snmp_openssl.c:948: undefined reference to `ERR_GET_FUNC'
/usr/bin/ld: /builddir/build/BUILD/net-snmp-5.9.1/snmplib/snmp_openssl.c:948: undefined reference to `ERR_GET_FUNC'

The function has been removed without a replacement because function numbers have been removed from OpenSSL. It should be sufficient to adjust the error reporting so that the function number is no longer included.

--- Additional comment from Josef Ridky on 2021-09-10 09:23:27 CEST ---

Fixed in upstream https://github.com/net-snmp/net-snmp/issues/343