On 21 September 2018 at 15:31, Mark Johnston <ma...@freebsd.org> wrote:
>
> Perhaps the following? It's not quite right since it'll still use
> -zifunc-noplt with an external LLVM toolchain, but I can't seem to
> figure out how to define a linker feature for only non-cross toolchains.
> In any case, we're going to upstream the option soon.
I wouldn't worry too much about out-of-tree since it will be upstream
soon as you say, otherwise looks good.
> +.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
> +.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
> .error amd64/i386 kernel requires linker ifunc support
> .endif
> +.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc-noplt} != ""
Maybe roll && defined(LINKER_FEATURES) into the outer .if?
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