On 4 Apr 2014, at 13:44, Jordan Hubbard <j...@ixsystems.com> wrote: > On Apr 4, 2014, at 5:33 PM, David Chisnall <thera...@freebsd.org> wrote: > >> The slight problem, however, is that we would still like to be able to build >> the base system with a more or less standard C compiler. Blocks are in >> clang and are slowly making their way into commercial compilers, but the >> only two versions of gcc that support them are the ones shipped by Apple and >> FreeBSD. > > Huh. Can I ask what specific need is driving that? As you point out, you’ve > got clang and you’ve also got the blocks support from Apple gcc back-ported, > so that covers all the architectures you could possibly want to generate code > for. Wanting to hold base to some retro K&R standard for its own sake seems… > weird… so I must be missing some part of the need statement, hence my > question?
There are two requirements: We'd like to kill off gcc 4.2.1 in base, because it doesn't support C11 or C++11. The lack of C++11 support is a problem because it means gcc architectures can't build libc++, so they need to use an old libstdc++ to build C++ things in the base system (which also means that these things can't take advantage of C++11, which cleans up the language a huge amount). The prerequisite for this is the availability of external toolchains for the non-clang platforms. If we could build base with gcc47 from ports, that would be okay, because then we'd have a modern C/C++ compiler in the base system and a modern(ish - 4.8 / 4.9 would be better, but 4.7 is a reasonable baseline) C/C++ compiler in ports to drive an external toolchain. For embedded uses, we'd also like to build FreeBSD with vendor's-ugly-hacked-up-gcc-of-the-week. This is less of an issue now for ARM, but MIPS vendors still hack up gcc in such a way that there's no way that they can get their changes upstreamed and then ship the result with their chips. David _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
