http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57424
--- Comment #1 from Jack Howarth howarth at nitro dot med.uc.edu ---
This problem is caused by following change in gcc trunk. In gcc-4_8-branch, the
generated Makefile in darwin_objdir/x86_64-apple-darwin12.3.0/i386/libjava/gcj
has...
dbexecdir = $(libdir)/i386/gcj-4.8.1-14
where libdir is...
libdir = ${exec_prefix}/lib
whereas now in gcc trunk we have...
dbexecdir = $(toolexeclibdir)/i386/gcj-4.9.0-14
where toolexeclibdir is...
toolexeclibdir = $(libdir)/i386
hence the duplication of i386 in the path.