Arm-Intel-PowerPC Universal Binaries Are Possible

Casual MacRumors visitors may not realize that we have a very active PowerPC forum where users discuss issues related to PowerPC Macs that have not been produced since 2006. Threads range from hardware upgrades and software options to nostalgia:

Apple's recently announced transition to Apple Silicon (Arm) based Macs raised some interesting questions about future support for these old machines.

In particular, MacRumors forum member Wowfunhappy asked about ongoing support for Universal binaries in the upcoming Arm-based macOS, and whether or not a four-way universal binary was possible:

During their 2020 WWDC keynote, Apple announced the reintroduction of Universal Binaries, for developers to create apps that work on both Intel and Arm Macs during the transition.

But Universal Binaries never really went away the first time! You can run PPC-Intel apps on Mojave, and I assume also Catalina. Also, many Intel-only apps are still "universal," in that they contain versions for both i386 (32bit Intel) and x86_64 (64bit Intel).

Thus, I am intensely curious: would it be possible for a developer to create a single universal binary that works natively on all four architectures: PPC, i386, x86_64, and ARM?

The answer, it appears, is yes. The TenFourFox developer blogged about the possibility, confirming that it is indeed possible:

A question I got repeatedly the last couple days was, now that AARM (Apple ARM) is a thing, is the ultimate ARM-Intel-PowerPC Universal Binary possible? You bet it is! In fact, Apple already documents that you could have a five-way binary, i.e., ARM64, 32-bit PowerPC, 64-bit PowerPC, i386 and x86_64. Just build them separately and lipo them together

TenFourFox is a Firefox port for PowerPC Macs running OS X 10.4 or 10.5. It provides those users with modern browser support. The developer actually points out that each architecture can even have its own subtype, meaning that ultimately a so-called "Super Duper Universal Binary" could have support for 17 different instruction sets, which could run on any machine from PowerPC to future Arm-based Mac with full support for all processor subtypes.

Top Rated Comments

fairuz Avatar
16 months ago
Came here to see who found this, of course it's the TenFourFox dev. This is awesome.
Score: 28 Votes (Like | Disagree)
Westside guy Avatar
16 months ago
Yawn. Wake me when they decide to include a 6502 binary in the mix.
Score: 19 Votes (Like | Disagree)
Mr. Awesome Avatar
16 months ago
It’s amazing that things like this are possible. I’m glad that there are some people out there who devote countless hours of their lives to these noble causes.
Score: 17 Votes (Like | Disagree)
Porco Avatar
16 months ago

but_why.gif
.jpg.png.svg.tiff
Score: 13 Votes (Like | Disagree)
casperes1996 Avatar
16 months ago

Yawn. Wake me when they decide to include a 6502 binary in the mix.
What do you mean "they"? While macOS itself doesn't run on 6502 or 68k, the binary packaging system Apple uses for their Mach-O executables could hold an arbitrary number of architecture including 6502
Score: 11 Votes (Like | Disagree)
farewelwilliams Avatar
16 months ago
but_why.gif
Score: 8 Votes (Like | Disagree)

Top Stories

apple california streaming event

Apple Event Announced: 'California Streaming' on September 14 With iPhone 13, Apple Watch Series 7 Expected

Tuesday September 7, 2021 9:03 am PDT by
Apple today announced that it will be holding a special event on Tuesday, September 14 at 10:00 a.m. The event will take place at the Steve Jobs Theater on the Apple Park campus in Cupertino, California. As with WWDC and last year's fall events, this new event will be held digitally with no members of the media invited to attend in person. Apple will likely provide pre-taped segments for...
Apple Prefer Lightning Over USB C Feature

iPhone Sticking With Lightning Port Over USB-C for 'Foreseeable Future'

Tuesday March 2, 2021 9:32 am PST by
Apple will retain the Lightning connector on the iPhone for the "foreseeable future," with no intention of switching to USB-C, according to reliable analyst Ming-Chi Kuo. In spite of much of the industry moving toward USB-C, Apple will not be using it to replace the Lightning connector on the iPhone 13, or indeed on any iPhone model for the time being. In a note seen by MacRumors yesterday,...
youtube apple tv

YouTube Discontinuing 3rd-Generation Apple TV App, AirPlay Still Available

Wednesday February 3, 2021 3:09 pm PST by
YouTube is planning to stop supporting its YouTube app on the third-generation Apple TV models, where YouTube has long been available as a channel option. A 9to5Mac reader received a message about the upcoming app discontinuation, which is set to take place in March.Starting early March, the YouTube app will no longer be available on Apple TV (3rd generation). You can still watch YouTube on...
original iphone

Phil Schiller Says iPhone Was 'Earth-Shattering' Ten Years Ago and Remains 'Unmatched' Today

Monday January 9, 2017 7:15 am PST by
To commemorate the tenth anniversary of the iPhone, Apple marketing chief Phil Schiller sat down with tech journalist Steven Levy for a wide-ranging interview about the smartphone's past, present, and future. The report first reflects upon the iPhone's lack of support for third-party apps in its first year. The argument inside Apple was split between whether the iPhone should be a closed...
iOS 15 icon on phone

Apple Seeds Sixth Betas of iOS and iPadOS 15 to Developers

Tuesday August 17, 2021 10:05 am PDT by
Apple today seeded the sixth betas of iOS and iPadOS 15 to developers for testing purposes, with the updates coming one week after Apple released the fifth betas. Registered developers can download the profile for the iOS and iPadOS betas from the Apple Developer Center, and once the profile is installed, beta updates will be available over the air. iOS 15 is a major update that...
maroon5memories

Apple Collaborates With Maroon 5 to Add 'Memories' Song to Photos App

Wednesday September 25, 2019 12:02 pm PDT by
Apple has teamed up with Maroon 5 to add the group's new song "Memories" to the Memories feature in the Photos app, allowing it to be used for photo slide show creations, reports Billboard. "Memories" will be available as a soundtrack option for a limited time and it is available to iPhone and iPad users running the latest iOS 13 and iPadOS software. Memories in the Photos app are created ...
it home ecommerce app iphone 13

iPhone 13 to Launch on September 17, AirPods 3 on September 30, Claims Report

Wednesday August 25, 2021 2:42 am PDT by
Apple may be planning to launch the iPhone 13 on Friday, September 17 and third-generation AirPods on Thursday, September 30, according to an image of an e-commerce app discovered by Chinese language site IT Home. The screenshot, originally posted by Weibo account @PandaIsBald, suggests all four iPhone 13 models will go on sale on September 17, followed by the AirPods 3 on September 30....
MacBook Pro Coating

Apple Launches Quality Program for MacBook Pro Anti-Reflective Coating Issues

Saturday October 17, 2015 7:58 am PDT by
Apple has issued an internal notice about a new Quality Program that addresses anti-reflective coating issues on MacBook and MacBook Pro models with Retina displays, as confirmed by multiple sources. These issues include the anti-reflective coating on displays wearing off or delaminating under certain circumstances. Apple will replace Retina displays on affected MacBook or MacBook Pro models ...
iPhone 13 Dummy Thumbnail 2

Full iPhone 13 Feature Breakdown: Everything Rumors Say We Can Expect

Tuesday August 31, 2021 7:50 am PDT by
With the launch of Apple's iPhone 13 lineup believed to be just a few weeks away, we have compiled all of the coherent rumors from our coverage over the past year to build a full picture of the features and upgrades coming to the company's new smartphones. For clarity, only explicit improvements, upgrades, and new features compared to the iPhone 12 lineup are listed. It is worth noting that...
iphone 12 colors 2021

iPhone 12 Colors: Deciding on The Right Color

Thursday November 5, 2020 8:35 am PST by
The iPhone 12 and iPhone 12 Pro arrived in October 2020 in a range of color options, with entirely new hues available on both devices, as well as some popular classics. The 12 and 12 Pro have different color choices, so if you have your heart set on a particular shade, you might not be able to get your preferred model in that color. iPhone 12 mini and iPhone 12 The iPhone 12 mini and iPhone...