On Sat, Sep 12, 2020, 2:16 AM Philippe Mathieu-Daudé <f4...@amsat.org> wrote:
> On 9/11/20 10:10 PM, Warner Losh wrote: > > > > > > On Fri, Sep 11, 2020 at 2:07 PM Eduardo Habkost <ehabk...@redhat.com > > <mailto:ehabk...@redhat.com>> wrote: > > > > On Fri, Sep 11, 2020 at 08:06:10PM +0100, Peter Maydell wrote: > > > On Fri, 11 Sep 2020 at 19:49, Eduardo Habkost <ehabk...@redhat.com > > <mailto:ehabk...@redhat.com>> wrote: > > > > > > > > I'm wondering: do our supported build host platforms all include > > > > compilers that are new enough to let us redefine typedefs? > > > > > > > > The ability to redefine typedefs is a C11 feature which would be > > > > very useful for simplifying our QOM boilerplate code. The > > > > feature is supported by GCC since 2011 (v4.6.0)[1], and by clang > > > > since 2012 (v3.1)[2]. > > > > > > In configure we mandate either GCC v4.8 or better, or > > > clang v3.4 or better, or XCode Clang v5.1 or better > > > (Apple uses a different version numbering setup to upstream). > > > So you should probably double-check that that xcode clang has > > > what you want, but it looks like we're good to go otherwise. > > > > Can anybody confirm if the following is accurate? > > > > https://gist.github.com/yamaya/2924292#file-xcode-clang-vers-L67 > > # Xcode 5.1 (5B130a) > > Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn) > > Target: x86_64-apple-darwin13.1.0 > > Thread model: posix > > > > If we know we have GCC 4.8+ or clang 3.4+, can we move to C11 and > > start using -std=gnu11? > > > > > > All supported branches of FreeBSD tier 1 platforms would be fine since > > they all use clang. Most of the tier 2 ones do too, but the ports/pkg > > system we have will install a newer compiler if need be (the ones that > > don't are still stuck at gcc 4.2.1 for GPLv3 reasons). > > See the quoted message from Peter: "In configure we mandate either > GCC v4.8 or better"... You shouldn't be able to build QEMU in ports/pkg. > Ah, I was grepping for gcc/clang. It specifies compiler:c11 so I missed that it already brings in a better compiler on those weird, old platforms. In any event, FreeBSD won't be a problem.... Warner Regards, > > Phil. >
