[MacPorts] #20933: gcc42, gcc43 on snow leopard: in libmpfr.dylib, libgmp.dylib, libiconv.dylib, file is not of required architecture

[MacPorts]

#20933: gcc42, gcc43 on snow leopard: in libmpfr.dylib, libgmp.dylib,
libiconv.dylib, file is not of required architecture
------------------------------+---------------------------------------------
 Reporter:  ram@…             |       Owner:  mww@…           
     Type:  defect            |      Status:  new             
 Priority:  Normal            |   Milestone:                  
Component:  ports             |     Version:                  
 Keywords:  snowleopard       |        Port:  gcc42, gcc43    
------------------------------+---------------------------------------------

Comment(by epimetheus314@…):

 Replying to [comment:1 ryandesign@…]:
 {{{
 ld: warning: in /opt/local/lib/libmpfr.dylib, file is not of required
 architecture
 ld: warning: in /opt/local/lib/libgmp.dylib, file is not of required
 architecture
 ld: warning: in /opt/local/lib/libiconv.dylib, file is not of required
 architecture
 }}}
 > I see the same with gcc43. These libraries are x86_64 on my system.
 Perhaps gcc doesn't realize it's supposed to be building x86_64 things.

 I had the same problem.  Since my iMac with Core 2 Duo is an old model,
 the kernel runs in a 32bit mode while Apple's gcc produces x86_64
 executables.

 I found the problem is that 'config.guess' in gcc's source directory
 returns 'i386-apple-darwin10.0.0' based on the output of `uname -p`.
 So I took the following procedure, which worked fine for me:

 1) Add three lines to 'configure.args' section in Portfile like:
 {{{
 80,81c80,84
 <         --with-mpfr=${prefix}
 < # do NOT use MacPorts binutils -- they do not work
 ---
 >         --with-mpfr=${prefix} \
 >       --build=x86_64-apple-darwin10 \
 >       --host=x86_64-apple-darwin10 \
 >       --target=x86_64-apple-darwin10
 >       # do NOT use MacPorts binutils -- they do not work
 }}}
 2) Install gcc43. This time it does not yield dylibs incompatibilities
 mentioned above, but yields the same error with #20816.

 3) cd
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_gcc43/work/gcc-4.3.4/gcc/cp/

 4) Edit line 76 of 'Make-lang.in' and remove 'tree-inline.o' from
 CXX_C_OBJS.

 5) Resume compiling.

-- 
Ticket URL: <http://trac.macports.org/ticket/20933#comment:9>
MacPorts <http://www.macports.org/>
Ports system for Mac OS