[MacPorts] #59649: libxml2 fails to build on 10.13.4

[MacPorts]

#59649: libxml2 fails to build on 10.13.4
---------------------------+---------------------
 Reporter:  andregirard    |      Owner:  (none)
     Type:  defect         |     Status:  new
 Priority:  Normal         |  Milestone:
Component:  ports          |    Version:
 Keywords:  build failure  |       Port:  libxml2
---------------------------+---------------------
 libxml2 fails to build after the following sequence of operations.
 Xcode is version 9.3.1

 {{{
 sudo port selfupdate
 --->  Updating MacPorts base sources using rsync
 MacPorts base version 2.6.2 installed,
 MacPorts base version 2.6.2 downloaded.
 --->  Updating the ports tree
 --->  MacPorts base is already the latest version

 sudo port clean libxml2
 --->  Cleaning libxml2

 sudo port upgrade outdated
 --->  Computing dependencies for libxml2
 --->  Fetching archive for libxml2
 --->  Attempting to fetch
 libxml2-2.9.9_3+universal.darwin_17.i386-x86_64.tbz2 from
 https://packages.macports.org/libxml2
 --->  Attempting to fetch
 libxml2-2.9.9_3+universal.darwin_17.i386-x86_64.tbz2 from
 http://ywg.ca.packages.macports.org/mirror/macports/packages/libxml2
 --->  Attempting to fetch
 libxml2-2.9.9_3+universal.darwin_17.i386-x86_64.tbz2 from
 http://aus.us.packages.macports.org/macports/packages/libxml2
 --->  Fetching distfiles for libxml2
 --->  Verifying checksums for libxml2
 --->  Extracting libxml2
 --->  Applying patches to libxml2
 --->  Configuring libxml2
 Error: Failed to configure libxml2, consult
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_textproc_libxml2/libxml2/work/libxml2-2.9.9/config.log
 Error: Failed to configure libxml2: configure failure: command execution
 failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_textproc_libxml2/libxml2/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/59649>
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