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Re: [PATCH v5] xen: Add Darwin.mk
- To: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 9 Feb 2026 15:13:17 +0100
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Mon, 09 Feb 2026 14:13:21 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 09.02.2026 14:42, Bertrand Marquis wrote:
>> On 9 Feb 2026, at 14:39, Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
>> On Mon, Feb 09, 2026 at 01:33:13PM +0000, Bertrand Marquis wrote:
>>>> On 9 Feb 2026, at 14:26, Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
>>>> On Mon, Feb 09, 2026 at 11:46:44AM +0100, Bertrand Marquis wrote:
>>>>> Xen does not provide a Darwin build configuration useable on Mac OS.
>>>>> It is possible to build Xen Hypervisor (tools are not supported) with a
>>>>> toolchain able to produce ELF binaries (GCC or others).
>>>>>
>>>>> Add config/Darwin.mk to include StdGNU.mk and force
>>>>> XEN_COMPILE_ARCH=unknown, ensuring Darwin builds always follow
>>>>> the cross-compile path so compiling on Mac OS is always handled as a
>>>>> cross compilation case.
>>>>>
>>>>> Only compiling the hypervisor has been tested !
>>>>>
>>>>> An example of how to build the hypervisor for arm64 on Mac OS
>>>>> (tools cannot be build for now) using a compiler from brew:
>>>>> - brew install aarch64-elf-gcc aarch64-elf-binutils
>>>>> - make XEN_TARGET_ARCH=arm64 CROSS_COMPILE=aarch64-elf- HOSTCC=clang
>>>>
>>>> This needs 'xen' target passed.
>>>
>>> Without any target, xen is built by default so i kept the simplest possible
>>> command
>>> But I am ok with adding xen
>>
>> With the `cd xen` omitted, won't that also attempt to build the tools
>> then?
>
> This is supposed to be called in the xen sub-directory not in the main
> directory.
>
> Now i get why you wanted the xen (and hence why there was the cd xen before)
>
> Maybe having -C xen would be a better idea, building from main Makefile could
> bring other side effects i guess.
Happy to add "-C xen" while committing, if that's what we now have settled
upon?
Jan
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