Minor nit with gcc-4.8-20121125. Since the ancient old Solaris 8 is not supported then configure should catch that up front as opposed to having bootstrap fail. Here I see the first few lines output from configure : checking build system type... i386-pc-solaris2.8 checking host system type... i386-pc-solaris2.8 checking target system type... i386-pc-solaris2.8 and then things continue normally however the bootstrap fails early and fast. Things like i586-pc-solaris2.8 fails also. I will have a look at pentiumpro-pc-solaris2.8 and then scrap Sol 8 forever if that fails also. However gcc 4.7.2 built and tested wonderfully, go figure. Dennis ps: I see in changelog : 2011-07-07 Rainer Orth <ro@xxxxxxxxxxxxxxxxxxxxxxxx> PR target/39150 * configure.ac (i[3456789]86-*-solaris2*): Also accept x86_64-*-solaris2.1[0-9]*. * configure: Regenerate. so maybe *-pc-solaris2.8 will fail also .. or not