[phobos] 32 and 64 bit libraries on Linux

[Walter Bright]

Michel Fortin wrote:
> Le 2011-01-03 à 18:00, Jonathan M Davis a écrit :
>
>   
>> On Monday 03 January 2011 14:48:38 Walter Bright wrote:
>>     
>>> Currently, dmd simply looks for libphobos.a
>>>
>>> I suggest changing it to:
>>>
>>>    lib32/libphobos.a    for -m32
>>>    lib64/libphobos.a    for -m64
>>>       
>> I assume that that's within the file hierarchy in the zip file? The correct 
>> directories for those varies from distribution to distribution if you're talking 
>> about /lib, /usr/lib, or /usr/local/lib. Some distros have lib for 32-bit and 
>> 64-bit. Others do lib for 64-bit and lib32 for 32-bit. However, any that have 
>> both lib32 and lib64 are going to have lib as well with either lib being a 
>> symlink to one of the other two or one of the other two being a symlink to lib.
>>     
>
> And on OS X, multiple architectures are generally merged in the same library/executable file as a "fat" or "universal" binary. Use the command "lipo" to create one.
>
> A naming change like this would break D for Xcode. So I'll have to release a new version and to keep it backward compatible for those who stick with older versions of DMD I'd have some detection job to do. On the other hand, creating a fat library using "lipo" wouldn't cause any disruption...
>
>   

Doing 64 bit OSX is a bit down the road. I don't think Linux supports 
such fat libraries.