Ticket History #6744: only test t_locate_kdc if known-good DNS name is present

Running "make check" while offline or on a firewalled network may
result in failure in lib/krb5/os because the invocation of
t_locate_kdc requires that the DNS servers for ATHENA.MIT.EDU be
reachable. Autodetect DNS utilities "dig" and "nslookup", and use
them to check for existence of the known-good DNS name. Also
parameterize the test so that the known-good DNS name can be
overridden on the make command line.

https://github.com/krb5/krb5/commit/357a5946bab220c6af9f243c88d733da2a5fe0bd
Commit By: tlyu
Revision: 24138
Changed Files:
U trunk/src/configure.in
U trunk/src/lib/krb5/os/Makefile.in

pull up r24138 from trunk

------------------------------------------------------------------------
r24138 | tlyu | 2010-06-18 15:41:48 -0400 (Fri, 18 Jun 2010) | 13 lines

ticket: 6744
subject: only test t_locate_kdc if known-good DNS name is present
target_version: 1.8.3
tags: pullup

Running "make check" while offline or on a firewalled network may
result in failure in lib/krb5/os because the invocation of
t_locate_kdc requires that the DNS servers for ATHENA.MIT.EDU be
reachable. Autodetect DNS utilities "dig" and "nslookup", and use
them to check for existence of the known-good DNS name. Also
parameterize the test so that the known-good DNS name can be
overridden on the make command line.

https://github.com/krb5/krb5/commit/b7708ca38ac69adc294e195e6e03f43dcc99fa74
Commit By: tlyu
Revision: 24195
Changed Files:
U branches/krb5-1-8/src/configure.in
U branches/krb5-1-8/src/lib/krb5/os/Makefile.in