Support for Apple Silicon (M1) in Allegro CL

64-bit Allegro CL Express

As of 2021-02-19 11:00 PST, the downloads from our website were updated to include the fixes needed to run on M1 Macs. If you downloaded before this date, please download a new version of the Express from here.

64-bit Allegro CL Enterprise and Professional

NOTE: please update to macOS 11.4 or later, because this version has important fixes in the operating system which allow Allegro CL to operate properly.

On Sept 1, 2021 we released this patch, which should greatly improve performance of Intel 64-bit versions of Allegro CL when run on Apple Silicon processors.

The native port to Apple Silicon is ongoing and will be released soon as a beta for the next release of Allegro CL.

There are two ways to install Allegro CL on Apple Silicon:

  1. Copy an updated /Applications/ from an Intel Mac to /Applications/ on an M1 Mac.
  2. Using, the original ACL distribution and your license file, install directly on an M1 Mac. See the instructions in the script for details.

Problems or questions?

If you have questions not answered by the above, please email us at

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