On Wed Apr 6 11, Warner Losh wrote: > > On Apr 6, 2011, at 3:41 PM, Alexander Best wrote: > > > On Wed Apr 6 11, Juli Mallett wrote: > >> On Wed, Apr 6, 2011 at 14:04, Alexander Best <arun...@freebsd.org> wrote: > >>> On Wed Apr 6 11, Ulrich Spoerlein wrote: > >>>> Author: uqs > >>>> Date: Wed Apr 6 20:08:23 2011 > >>>> New Revision: 220401 > >>>> URL: http://svn.freebsd.org/changeset/base/220401 > >>>> > >>>> Log: > >>>> Complete WITHOUT_CXX support. It implies WITHOUT_GROFF and > >>>> WITHOUT_CLANG. > >>> > >>> is there no way to build clang/llvm without CXX support? > >> > >> Clang and LLVM are written in C++. Even if their support for > >> compiling C++ could be disabled, you'd still need a C++ cross-compiler > >> to build them, which ought to be disabled by WITHOUT_CXX, right? > > > > good point. is it even possible to build a world *with* C++ support, if the > > installed world *doesn't* have C++ support? is the C++ part of gcc written > > in > > C? if that's the case it's possible. > > Yes. We don't need c++ to bootstrap g++ or anything else in the base system. > Once we build the compilers, we can build the c++ that's in the tree.
however that means that FreeBSD can never get rid of gcc. so clang can never become the main and only base compiler. > > > couldn't we install clang *without* C++ support and then do the following to > > build it *with* C++ support: > > > > 1) use gcc to build a bootstrap gcc *with* C++ support > > 2) use the bootstrap gcc to build clang > > I suppose you could do that, but I'm unsure how much that buys you... > > Warner -- a13x _______________________________________________ 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"
