Igor Delovski Board

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

MacPorts - Using build_arch

"MacPorts 1.8 introduced a new option to macports.conf: build_arch. This
allows you to control the architecture targeted by builds. For example, you
can use this to build 64bit on 10.5 (where 32bit is the default) or 32bit on
10.6 (where 64bit is usually the default).

Documentation on this feature can be found in the man page for
macports.conf, and also in the Guide."

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

so - How to check if a static library is built for 64-bit?

"I want to make sure that the .a library is properly including that
architecture, but when i run lipo -info on it, I see:

Architectures in the fat file: library.a are: armv7 armv7s (cputype
(16777228) cpusubtype (0))"

delovski · Joined: 14 Jun 2006 Posts: 3524 Location: Zagreb

mdfind "(kMDItemExecutableArchitectures == 'i386') && (kMDItemExecutableArchitectures != 'x86_64')"

Ike · Kapetan Joined: 17 Jun 2006 Posts: 3285 Location: Europe

so - How to build a static library on M1 mac that supports iOS simulator on Intel mac?

"I have a fat iOS library which supports both real devices (arm64...) and iOS
simulator of Intel Mac (x86_64). But when I switched to M1 mac, things get
tough."

Suson Tapa - Apple Silicon and the library incompatibility problem for iOS development

"So, with Xcode 12 Apple switched Xcode from x86 to ARM so that it can run
natively on M1 Macbook. Simulators before iOS 14 only supported x86 (by
running the Simulator using Rosetta) but the Simulators running iOS 14 and
above support both ARM and x86(using Rosetta), Simulator in this case
actually run natively on M1 but any apps that don't support ARM runs
through Rosetta."

Ike · Kapetan Joined: 17 Jun 2006 Posts: 3285 Location: Europe

r - DiscussionWhat will happen to Rosetta 2 in 2027/macOS 28

"Rosetta was designed to make the transition to Apple silicon easier, and we
plan to make it available for the next two major macOS releases -- through
macOS 27 -- as a general-purpose tool for Intel apps to help developers
complete the migration of their apps. Beyond this timeframe, we will keep a
subset of Rosetta functionality aimed at supporting older unmaintained gaming
titles, that rely on Intel-based frameworks."