Date: Sat, 21 Sep 2019 20:32:19 +1000 From: Peter Jeremy <peter@rulingia.com> To: freebsd-arm@freebsd.org Subject: Re: ARM programs expecting misspelt __ARM_ARCH_6ZK__ Message-ID: <20190921103219.GN97181@server.rulingia.com> In-Reply-To: <CANCZdfr0v6jQ_G8EEGxjUehz8LUk=Rner9BO-XhTcc4=QcTAHQ@mail.gmail.com> References: <20190921081649.GM97181@server.rulingia.com> <CANCZdfr0v6jQ_G8EEGxjUehz8LUk=Rner9BO-XhTcc4=QcTAHQ@mail.gmail.com>
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On 2019-Sep-21 11:55:15 +0200, Warner Losh <imp@bsdimp.com> wrote:
>On Sat, Sep 21, 2019, 10:17 AM Peter Jeremy <peter@rulingia.com> wrote:
>> The options for ports would seem to be:
>> 1) Hack clang to export __ARM_ARCH_6ZK__ as well as __ARM_ARCH_6KZ__
>
>I'd prefer #1. Or a 1a that defines the bad one if the good one is defined
>in some appropriate system header. It has become a defacto API...
The definition is in contrib/llvm/tools/clang/lib/Basic/Targets/ARM.cpp:
void ARMTargetInfo::getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const {
=2E..
if (!CPUAttr.empty())
Builder.defineMacro("__ARM_ARCH_" + CPUAttr + "__");
So it probably needs special casing to export __ARM_ARCH_6ZK__ when
CPUAttr is "6KZ".
--=20
Peter Jeremy
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