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Re: [PATCH] LTO plugin for coff, part 1: break out ELF-specific code and enable COFF builds
On Sat, Oct 02, 2010 at 10:17:14PM +0100, Dave Korn wrote:
> On 02/10/2010 21:20, Jack Howarth wrote:
>
> > Regarding part (b), I am unclear if this lto-plugin will require the use
> > of binuils on darwin.
>
> Well, yes, unless you can add it to cctools!
>
> > If so, it will definitely be a niche change for darwin
> > as the vast majority of users will want to build with FSF gcc using the standard
> > darwin cctools from Xcode. IMHO, binutils is not likely to be well supported on
> > darwin for use beyond cross-platform builds of the darwin target. I definitely
> > would not want to see lto require binutils for standard usage.
>
> OK, but bear in mind that whether we build/install it is separate from
> whether we actually invoke it at runtime in the installed compiler, which is
> controlled by whether we have -fuse-linker-plugin or not. I haven't yet
> figured out where exactly -fuse-linker-plugin comes from yet, but in general
> top-level configure can only decide what to build or not, while gcc/
> subconfigure is responsible for knowing the details of how to invoke target
> native tools at runtime. So would you be OK with it getting built but unused,
> or would you like me to make it depend (in the darwin case only) on being
> configured --with-gnu-ld?
Dave,
I would lean towards tethering it --with-gnu-ld. Iain should be able to test
this option since he appears to do regular builds against binutils for the darwin
targets.
Jack
>
> cheers,
> DaveK