title: gcc-4.8 failed with error "where has __float128 gone?"
body: <p>I am trying to build GCC on a core2-apple-darwin12.3.0 i386 machine. The configure seems to go through without problems but when I invoke 'make' it returns an error.</p>
  
  <pre><code>In file included from ./kinds.h:75:0,
               from /gcc-4.8.0/libgfortran/libgfortran.h:232,
               from /gcc-4.8.0/libgfortran/fmain.c:4:
  
  /gcc-4.8.0/libgfortran/kinds-override.h:40:5: error: #error "Where has __float128 gone?"
  
   #   error "Where has __float128 gone?"
   ^  
  make[3]: *** [fmain.lo] Error 1
  make[2]: *** [all] Error 2
  make[1]: *** [all-target-libgfortran] Error 2
  make: *** [all] Error 2
  </code></pre>
  
  <p>So far I have been unable to track down a successful fix.</p>