[MacPorts] #20361: (trunk) fftw-3 +gcc43: failure during configure phase, compiler does not recognize -arch flag

[MacPorts]

#20361: (trunk) fftw-3 +gcc43: failure during configure phase, compiler does not
recognize -arch flag
---------------------------------+------------------------------------------
 Reporter:  simon@…              |       Owner:  ram@…           
     Type:  defect               |      Status:  assigned        
 Priority:  Normal               |   Milestone:  MacPorts 1.8.0  
Component:  ports                |     Version:  1.8.0           
 Keywords:  fftw-3 -arch         |        Port:  fftw-3          
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Changes (by jmr@…):

 * cc: jmr@… (added)
  * milestone:  => MacPorts 1.8.0


Comment:

 Replying to [comment:8 toby@…]:
 > It's possible that the configure.compiler setting gets used earlier, and
 setting in the variant is too late for the arch_flag_supported check to
 operate correctly.

 Yeah, configure.archflags gets appended to configure.{c,cxx,f}flags before
 variants are executed. There are a couple of issues here: first, I don't
 think any fortran compiler supports -arch, so we should probably always
 use -m32/-m64 in configure.f*flags. Second, it's probably a bad idea to be
 appending to those variables at all, since there's really no time you can
 do it without the potential for getting it wrong. I think the convention
 just has to be that configure.archflags will be added to the right
 environment variable during configure, but if you are patching CFLAGS into
 a Makefile manually or whatever you'll just have to specifically put the
 archflags in there as well.

-- 
Ticket URL: <http://trac.macports.org/ticket/20361#comment:11>
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