[MacPorts] #56399: openssh @7.6p1_4 +ldns: Install fails at openssh configure stage when libressl is installed

[MacPorts]

#56399: openssh @7.6p1_4 +ldns: Install fails at openssh configure stage when
libressl is installed
---------------------+--------------------
 Reporter:  leebast  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.4.3
 Keywords:           |       Port:
---------------------+--------------------
 May be High Sierra specific, but I only have one 10.12 system and no 10.11
 or 10.10 systems remaining to verify with. Reproduced on rMBP and Mac Pro
 5,1 running macOS 10.13.4, Xcode 9.3 with all software updates applied.
 With a completely fresh install of MacPorts build fails at the openssh
 configuration step. However, the build succeeded on a system running
 10.12.6.

 Steps to reproduce:
 1. New install of MacPorts, selfupdate.
 2. port install libressl
 3. port install openssh +ldns
 All dependencies install. Build halts at
 {{{
 --->  Configuring openssh
 Error: Failed to configure openssh, consult
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_net_openssh/openssh/work/openssh-7.6p1/config.log
 Error: Failed to configure openssh: configure failure: command execution
 failed
 }}}

 OpenSSH does install successfully with libressl installed but without the
 ldns variant, or without libressl installed and with the ldns variant.

-- 
Ticket URL: <https://trac.macports.org/ticket/56399>
MacPorts <https://www.macports.org/>
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