[MacPorts] #33765: glw: build fails on PowerPC systems (was: glw failed to build)

[MacPorts]

#33765: glw: build fails on PowerPC systems
--------------------------------+-------------------------------------------
 Reporter:  trog24@…            |       Owner:  css@…           
     Type:  defect              |      Status:  new             
 Priority:  Normal              |   Milestone:                  
Component:  ports               |     Version:  2.0.4           
 Keywords:  powerpc             |        Port:  glw             
--------------------------------+-------------------------------------------
Changes (by ryandesign@…):

  * keywords:  => powerpc


Comment:

 Ok, I can reproduce the problem on my Leopard G4. The relevant part of the
 log is:

 {{{
 :info:build /bin/sh ../../bin/mklib -o GLw -linker '/usr/bin/gcc-4.0'
 -ldflags '-L/opt/local/lib -arch ppc' \
 :info:build             -major 1 -minor 0 -patch 0 \
 :info:build              -install ../../lib \
 :info:build             -id /opt/local/lib/libGLw.1.dylib \
 :info:build             -L../../lib -lGL  -lXm -L/opt/local/lib -lXt -lX11
 GLwDrawA.o GLwMDrawA.o
 :info:build mklib: Making Darwin shared library:  libGLw.1.0.dylib
 :info:build lipo: /var/tmp//ccZUGZAl.out and /var/tmp//ccNivMSJ.out have
 the same architectures (ppc7400) and can't be in the same fat output file
 }}}

 MacPorts requests `-arch ppc` (generic PowerPC architecture), but since OS
 X and MacPorts no longer run on G3 processors, the arch that the compiler
 actually builds for is ppc7400 (G4 and up). The mklib command they're
 using actually analyzes the library with `lipo -info` and gathers up the
 architectures and tries to use them. So the compile command it ends up
 constructing contains `-arch ppc -arch ppc7400`. When there are multiple
 `-arch` flags the compiler compiles each arch separately, then tries to
 glue them together with `lipo`. But since `-arch ppc` and `-arch ppc7400`
 mean the same thing now, `lipo` throws an error about trying to combine
 two same-architecture binaries.

 It looks like [ticket:33763 updating glw to its latest version] would
 solve this problem. Or we could patch mklib.

-- 
Ticket URL: <https://trac.macports.org/ticket/33765#comment:4>
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