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Re: [RFC PATCH] xen: Add macOS hypervisor build support
- To: Bertrand Marquis <bertrand.marquis@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 4 Feb 2026 16:31:12 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 04 Feb 2026 15:31:25 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 04.02.2026 14:16, Bertrand Marquis wrote:
> Xen does not currently document how to build the hypervisor on macOS, and
> there is no Darwin configuration for a Homebrew-based toolchain. In
> addition, the Makefile silent-mode detection can be tripped by -I paths
> that contain an "s", which hides build commands unexpectedly.
This wants submitting as a standalone fix, so it can be backported. But see
also below. I don't, however, understand how -I could be useful here - our
build system is self-contained, so any include directives used should be
satisfiable without any -I.
> --- /dev/null
> +++ b/config/Darwin.mk
> @@ -0,0 +1,4 @@
> +include $(XEN_ROOT)/config/StdGNU.mk
Darwin isn't really a GNU environment, is it? The definitions in that file
may be suitable, but perhaps a brief comment is warranted?
> --- a/xen/Makefile
> +++ b/xen/Makefile
> @@ -116,7 +116,7 @@ endif
> # If the user is running make -s (silent mode), suppress echoing of
> # commands
>
> -ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
> +ifneq ($(findstring s,$(firstword $(MAKEFLAGS))),)
While probably this would do, assuming make isn't going to make drastic
changes to how $(MAKEFLAGS) is set up, how about
-ifneq ($(findstring s,$(filter-out -%,$(MAKEFLAGS))),)
instead?
Jan
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