[MacPorts] #13314: gcc41 fails to build on Mac OS X 10.5 Leopard

[MacPorts]

#13314: gcc41 fails to build on Mac OS X 10.5 Leopard
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  Reporter:  carnevale at tin.it  |       Owner:  mww at macports.org
      Type:  defect            |      Status:  assigned        
  Priority:  Low               |   Milestone:  Port Bugs       
 Component:  ports             |     Version:  1.5.2           
Resolution:                    |    Keywords:  gcc, Leopard    
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Comment (by roland at lrde.epita.fr):

 I managed to compile the whole set of GCC back-ends on Mac OS X 10.5
 (Leopard) on Intel (currently, the `Portfile` is configured to compile the
 C back-end only).  Here is a patch against `Portfile` as well as two
 patches to have GCC 4.1.2 compile again.

 I had to fix three problems:
  1. First, `configure` looks for a version of Texinfo equal or greater
 than 4.2, but the test is broken (the test doesn't handle Texinfo 4.11,
 which is the one currently shipped with MacPorts).  Attached patch `patch-
 configure-texinfo` fixes this test.
  2. Then, `c++filt`'s interface seems to have changed over time: option
 `--strip-underscores` is now named `--strip-underscore` (with no 's'), at
 least in the version provided by Apple in Leopard.  Attached file `patch-
 make-exports.pl-leopard` handles this.
  3. Last, the interface of libiconv (1.12) from MacPorts is not the one
 expected by the GCC being compiled, and some symbols are unresolved.  A
 solution is to force the build system to use the system's library, located
 in /usr/lib/, rather than the MacPorts' one.  Line `configure.args-append
 --with-libiconv-prefix=/usr` from `Portfile.diff` addresses this.

 Hope it'll help!

-- 
Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/13314#comment:3>
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