Re: More Snow Leopard fun: multiarch problems while building plperl

hi tom,

> $ file /System/Library/Perl/lib/5.10/libperl.dylib
> /System/Library/Perl/lib/5.10/libperl.dylib: Mach-O universal binary  
> with 3 architectures
> /System/Library/Perl/lib/5.10/libperl.dylib (for architecture  
> x86_64):  Mach-O 64-bit dynamically linked shared library x86_64
> /System/Library/Perl/lib/5.10/libperl.dylib (for architecture  
> i386):    Mach-O dynamically linked shared library i386
> /System/Library/Perl/lib/5.10/libperl.dylib (for architecture  
> ppc7400): Mach-O dynamically linked shared library ppc
>
> which I found rather surprising because I thought Snow Leopard had
> yanked out all support for PPC.  However, there it is.  But you do  
> *not*

these universal libraries are needed for older programs to run. you  
can run
programs with ppc-architecture on snow leopard. and you probably need it
if you cross-compile for a ppc-machine.

> $ file plperl.so
> plperl.so: Mach-O universal binary with 3 architectures
> plperl.so (for architecture x86_64):    Mach-O 64-bit bundle x86_64
> plperl.so (for architecture i386):      Mach-O bundle i386
> plperl.so (for architecture ppc):       Mach-O bundle ppc

another way is to extract the needed architectures after the build.  
e.g. for x86_64:

ditto --rsrc --arch x86_64 libperl.so libperl.so.tmp && mv  
libperl.so.tmp libperl.so

regards, jan otto