From: Eric Hodel <drbrain@...7.net>
Date: 2009-07-02T06:16:23+09:00
Subject: Re: 64-bit Ruby for OS X ?

On Jun 30, 2009, at 18:36, Greg Willits wrote:

> Has anyone built a 64-bit Ruby for Leopard. I've googled my brains  
> out,
> but am finding nothing.
>
> I'm using 1.8.6 right now, but I could start testing 1.9.x if  
> necessary.
>
> I need it for pure Ruby projects to work on some large data  
> aggregation
> tasks that are whacking the 4GB RAM limit.


Read:

http://developer.apple.com/documentation/Darwin/Conceptual/64bitPorting/building/building.html#/ 
/apple_ref/doc/uid/TP40001064-CH208-BHCHDAFB

For 1.9 I configured:

$ LDFLAGS="-arch x86_64" CFLAGS="-arch x86_64 -mmacosx-version- 
min=10.5 -D_FILE_OFFSET_BITS=64" ./configure

(ignore the error from fuse, it seems configure doesn't use CFLAGS  
there)

`make test` finishes most tests, `make test-all` fails with a missing  
encoding (maybe iconv isn't compiled 64-bit?)

The built ruby is 64-bit though:

$ ./ruby -ve 'p 1.size'
ruby 1.9.1p129 (2009-05-12 revision 23412) [i386-darwin9.7.0]
8

Compared to Apple ruby:

$ ruby -ve 'p 1.size'
ruby 1.8.6 (2008-08-11 patchlevel 287) [universal-darwin9.0]
4

I imagine the same configure flags would work for 1.8.