[MacPorts] #20372: glib2 won't build correctly on PPC machines

[MacPorts]

#20372: glib2 won't build correctly on PPC machines
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 Reporter:  mta@…          |       Owner:  macports-tickets@…                   
     Type:  defect         |      Status:  new                                  
 Priority:  Normal         |   Milestone:                                       
Component:  ports          |     Version:  1.8.0                                
 Keywords:                 |        Port:  glib2                                
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 The configure script for glib2 can't figure out the endianness of the
 machine if there is a "-arch" parameter in CFLAGS and assumes little-
 endian with a warning.  This causes problems in both the universal and
 non-universal builds of glib2 (for different reasons).  Sometime recently
 MacPorts was changed to provide a -arch flag even in a non-universal
 build, this causes this build to assume a little-endian machine in all
 cases.  Of course on a universal build the -arch parameter is necessary
 and the Portfile contains some code to deal with this.  However it is
 incorrect and the universal build also assumes a little-endian machine in
 all cases.

 Since the build appears to succeed (if you don't see the warning from
 configure), but assumes little-endian architecture, this is a somewhat
 subtle bug.  It generates header files which may cause other programs to
 build incorrectly and libraries which mostly work, but fail for some
 calls.  After fixing this bug you need to rebuild everything that depends
 on glib2 to be sure things will work again.

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Ticket URL: <http://trac.macports.org/ticket/20372>
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