Detect OSX on Intel and pre-Intel systems?

[thomthom]

How can one detect if the Ruby version running OSX is on an Intel system or pre-Intel system?

[tbd]

Snow Leopard Ruby code (1.8.7);
> puts RUBY_PLATFORM
universal-darwin10.0

Sketchup Ruby (1.8.5);
> RUBY_PLATFORM
i686-darwin8.10.1

Terminal code;
> file /usr/bin/ruby
/usr/bin/ruby; Mach-O universal binary with 3 architectures
/usr/bin/ruby (for architecture x86_64);	Mach-O 64-bit executable x86_64
/usr/bin/ruby (for architecture i386);	Mach-O executable i386
/usr/bin/ruby (for architecture ppc7400);	Mach-O executable ppc

[thomthom]

Thanks!

hmmm... universal binaries....
Can one compile a Ruby C Extension that runs on both PowerPC and Intel macs?

[tbd]

if you look at the Makefile generated via extconf.rb you have

CFLAGS   =  -fno-common -arch i386 -arch x86_64 -g -Os ...

so you can add/modify for PPC to suit your needs. didn't tried it, so I dont know if it works ok. btw, are there a lot of PPC users to worth the effort ?

[thomthom]

I have no idea. Just a thought in case it was easy.
Atm - the only mac I have is a PPC... it's mad how expensive second hand macs are. Even really old PPC variants. Nuts!

[thomthom]

I just checked on an older PPC mac. So to sum up this thread:

` # Sketchup Ruby OSX 10.4 PPC

* RUBY_PLATFORM: fat-darwin8.8.0

* RUBY_VERSION: 1.8.5

Sketchup Ruby OSX 10.5 Intel

* RUBY_PLATFORM: i686-darwin8.10.1

* RUBY_VERSION: 1.8.5`