Date: Wed, 9 Apr 2014 11:10:59 -0500 From: Brooks Davis <brooks@freebsd.org> To: Warner Losh <imp@bsdimp.com> Cc: freebsd-arch <freebsd-arch@freebsd.org> Subject: Re: Separating out building bootstrap and system compilers Message-ID: <20140409161059.GA14501@lor.one-eyed-alien.net> In-Reply-To: <09D78C17-A4F6-4A79-96D4-413B937265F4@bsdimp.com> References: <09D78C17-A4F6-4A79-96D4-413B937265F4@bsdimp.com>
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[-- Attachment #1 --] On Tue, Apr 08, 2014 at 09:25:15PM -0600, Warner Losh wrote: > I?d love to be able to say > > make buildworld WITHOUT_GCC=t WITHOUT_CLANG=t > > and get a working system out of it, without compilers. Too bad I can?t right now. > > Luckily, I worked up these patches. Here?s my proposed commit message. Please comment on the patch > (which can be found at http://people.freebsd.org/~imp/patch-queue/bootstrap) > > Separate out enabling building clang and/or gcc for the system and > building clang and/or gcc as the bootstrap compiler. Normally, the > default compiler is used. WITH_CLANG_BOOTSTRAP and/or > WITH_GCC_BOOTSTRAP will enable building these compilers as part > bootstrap phase. WITH/WITHOUT_CLANG_IS_CC controls which compiler is > used by default for the bootstrap phase, as well as which compiler is > installed as cc. buildworld now successfully completes building the > cross compiler with WITHOUT_CLANG=t and WITHOUT_GCC=t and produces a > built system with neither of these included. > > MK_CROSS_COMPILER will now force MK_CLANG_BOOTSTRAP=no and > MK_GCC_BOOTSTRAP=no. > > BOOTSTRAP_COMPILER was considered, but rejected, since pc98 needs both > clang and gcc to bootstrap still. It should be revisisted in the > future if this requirement goes away. Values should be gcc, clang or > none. > > Chances are good that MK_BINUTILS is a good candidate for similar > treatment. We likely need to fold Xxx causing things to magically not > happen into this scheme as well, but that may be a larger, more disruptive > change. > > Comments? Looks good to me. Thanks for taking the next step in disentangling these variables. -- Brooks [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iKYEARECAGYFAlNFcRNfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3Bl bnBncC5maWZ0aGhvcnNlbWFuLm5ldDY1NUQ1MTlDMjZBNzgyRTcyNTI5OUJGMDVE OEU4QkU5RjIzODFBRDQACgkQXY6L6fI4GtRs/wCgooYMLB1WsRu9mE9IcG4D5p7H qrUAoI4xtag7j2wl6pR38/oYOzNG11Ki =+SWV -----END PGP SIGNATURE-----
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