[MacPorts] #37354: expat: C compiler cannot create executables

[MacPorts]

#37354: expat: C compiler cannot create executables
------------------------------+--------------------------
  Reporter:  mr_pogey_bait@…  |      Owner:  ryandesign@…
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.1.2
Resolution:                   |   Keywords:
      Port:  expat            |
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Comment (by ryandesign@…):

 The config.log says:
 {{{
 configure:3215: /usr/bin/clang -O2 -arch i386 -arch ppc
 -I/opt/local/include -L/opt/local/lib -arch i386 -arch ppc conftest.c  >&5
 clang: warning: not using the clang compiler for the 'powerpc'
 architecture
 }}}
 This probably means that at some point you upgraded from Leopard or
 earlier and haven't updated your macports.conf file to match. In
 particular your universal_archs setting is incorrect. See wiki:Migration
 for all the things you need to do when you upgrade to a new version of OS
 X.

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Ticket URL: <https://trac.macports.org/ticket/37354#comment:8>
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