Tidbits that I found that looked like they were related, but have not provided an answer ... http://mail.opensolaris.org/pipermail/tools-compilers/2010-October/001194.html http://fingolfin.org/illumos/webrev/3210/usr/src/cmd/sgs/libld/common/files.c.cdiff.html Really, I cannot be the first to attempt to build GCC 4.7.2 on Solaris 10?