[flac-dev] Enabling universal building of libFLAC

[Cristian Adam]

Hi,

Building with CMake for both x86_64 and aarch64 for MacOS is as easy as
setting the CMake configuration
variable: "-DCMAKE_OSX_ARCHITECTURES=x86_64;arm64" when configuring the
project.

See How do I build cmake from source as universal(arm64 and x86_64) binary
on Mac? - Usage - CMake Discourse
<https://discourse.cmake.org/t/how-do-i-build-cmake-from-source-as-universal-arm64-and-x86-64-binary-on-mac/5862/3>

for a similar case.

Cheers,
Cristian.


On Sat, Sep 17, 2022 at 5:46 PM Martijn van Beurden <mvanb1 at gmail.com>
wrote:

> Hi all,
>
> As is being discussed here: https://github.com/xiph/flac/issues/453
> libFLAC has some issues building on MacOS. More specifically, building for
> aarch64 and x86_64 at the same time.
>
> The problem here is that autotools and CMake expect to configure for one
> architecture at a time. Also, code is dependent on that configuration, and
> not on runtime variables.
>
> It seems a challenge to me: we need both configuration and building to be
> aware of stuff being built in parallel for two architectures. Also, it is
> important not to break anything on other architectures, so we might need
> both approaches: relying on either run-time arch for MacOS and on static
> configuration for other systems.
>
> I do not have Apple hardware nor any experience with this. I can't seem to
> find much documentation on porting autotools or CMake scripts for Apple's
> universal builds. If there is anyone here up for this challenge, do not
> hesitate to let me know :)
>
> Kind regards, Martijn van Beurden
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> flac-dev at xiph.org
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>
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