[MacPorts] #23796: no support for build_arch in boost

[MacPorts]

#23796: no support for build_arch in boost
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 Reporter:  johannes.behr@…          |       Owner:  macports-tickets@…                   
     Type:  defect                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:                                       
Component:  ports                    |     Version:  1.8.2                                
 Keywords:  build_arch i386 32       |        Port:  boost                                
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 I tried to install a pure 32-bit version on snow leopard but failed since
 boost does not support the build_arch since boost. To verify this bug do
 the following:

 1) install macports pkg
 2) edit etc/macports/macports.conf and activate "build_arch i386"
 3) sudo port install boost

 The (attached) errot output says:

 ld: warning: in /opt/local/lib/libbz2.dylib, file is not of required
 architecture
 ld: warning: in /opt/local/lib/libz.dylib, file is not of required
 architecture

 So the bzip2 and zlib ports are not installed for the same architecture as
 that for which the system tries to build boost.

 guessed reason: bzip2 and zlib are built for i386, since build_arch is set
 to i386 in macports.conf and they suport build_arch. boost does not
 support changing build_arch and is therefore still trying to build for
 x86_64. A quick glance in the portfile shows that it doesn't use the
 standard configure phase (which is how ports automatically acquire support
 for changing build_arch) and searching the portfile for "arch" doesn't
 show any code that would cause the port to respect build_arch.

-- 
Ticket URL: <http://trac.macports.org/ticket/23796>
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