Re: gcc and little/big endian

FROM : Bill Northcott
DATE : Thu Jan 30 18:47:20 2003

> From: fernand reynaud <<email_removed>>
> Subject: gcc and little/big endian
> To: <email_removed>


> Hello,


> According to what I'v read, the PowerPC is supposed to
> be able to handle both little and big endian data
> formats.


> gcc defines -mlittle and -mbig to specify the desired
> mode.


> However apple's version of gcc does not seem to
> recognize these options.


> Has anyone managed to compile in little endian on the
> mac (I'd like to be able to natively treat
> little-endian network packets without going through
> the hasle of converting every second field...)?


AFAIK PowerPC Darwin is a big endian OS.  Any code compiled for it will be
big endian.  You would need to target some a small endian PowerPC OS.  I
am not sure there is one.

You could of course use the GNU gcc compiler on MacOS X, if it does what
you want.

I am fascinated about why you are trying to do this.

Bill Northcott