[MacPorts] #61672: wxWidgets-3.2 fails to configure on Big Sur

[MacPorts]

#61672: wxWidgets-3.2 fails to configure on Big Sur
---------------------------------------+---------------------------
 Reporter:  alex1platon                |      Owner:  (none)
     Type:  defect                     |     Status:  new
 Priority:  Normal                     |  Milestone:
Component:  ports                      |    Version:  2.6.4
 Keywords:  wxWidgets big sur big_sur  |       Port:  wxWidgets-3.2
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 Using Command Line Tools for XCode 12.2.  Complains about missing zlib but
 not triggering a dependency install.


 {{{
 :info:configure checking for zlib.h >= 1.1.4... no
 :info:configure checking for zlib.h... (cached) no
 :info:configure configure: WARNING: zlib library not found or too old,
 will use built-in instead
 :info:configure checking whether zlib.h file exists... no
 :info:configure configure: error:
 :info:configure     Configured to use built-in zlib library, but the
 required file
 :info:configure     ../src/zlib/zlib.h couldn't be found.
 :info:configure     You might need to run
 :info:configure         git submodule update --init src/zlib
 :info:configure     to fix this.
 :info:configure Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_wxWidgets
 :info:configure Exit code: 1
 :
 }}}

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Ticket URL: <https://trac.macports.org/ticket/61672>
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