[chuck-users] Anyone else running ChucK dual-core in 64-bit mode?

[Ken Restivo]

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On Sun, Apr 29, 2007 at 01:40:16PM -0700, Mark Pauley wrote:
> Not sure about linux, but I know that for darwin linking of 32 bit  
> binaries to 64 bit binaries is impossible.  In the best case, you will  
> have to do all sorts of tricks at the kernel level to allow 64 bit  
> code (with pointers possibly way way up in the address space) to run  
> in 32 bit mode.
> 
> Your particular seg-fault issue may be related to an invalid alignment  
> problem.  If your OBJ_MEMBER_DATA macro evaluates to a value that  
> isn't a multiple of the unsigned long size (8 bytes), then  
> OBJ_MEMBER_UINT could effectively be causing an invalid instruction to  
> be generated.
> 
> You could add a check to make sure that the value OBJ_MEMBER_DATA  
> returns in OBJ_MEMBER_UINT is a multiple of 8.
> 

Instead, I'm going to build libjack and its dependencies (libFLAC and libsoundfile) as a bi-arch, installing the 32-bit versions in /usr/lib32 and the 64-bit versions in /usr/lib64, per the Debian standard. Then I'll try building ChucK with -m32 and it should link properly (I hope) and run correctly (again, I hope).

I'll be back after I've done that, to report success or to ask for further help if needed. Probably looking at next week by the time I get that far.

- -ken
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