[ first, this is the wrong list to ask such question, gcc-help is the
right one ]
On Nov 27, 2006, at 7:25 PM, Ulf Magnusson wrote:
How are you supposed to find the canonical name of a system (of
known type) in CPU-Vendor-OS form in the general case?
In the general case, you ask someone that has such a machine to run
config.guess, or failing that, you ask someone, or failing that, you
just invent the obvious string and use it.
Most portable software doesn't much care just what configuration you
specify, some very non-portable software will fail to function unless
you provide exactly the right string. gcc is of the later type, if
you're interested in building it.
If you have access to a system of that particular type, you can run
config.guess to find out, but you might not have, and that approach
won't work for many systems anyway.
That approach always works on all host systems. :-) If it didn't,
that'd be a bug and someone would fix it.
The canonical name needs to be known e.g. when cross-compiling and
building cross-compilers.
Ah, for crosses, you have to know what you want, and what you want is
what you specify. If your question is, what do you want, well, you
want what you want. Either, it works, or, you've not ported the
compiler.
For example, you can configure --target=arm, if you want an arm, or --
target=m68k if you want an m68k, or sparc, if you want sparc, or ppc
if you want ppc, or powerpc if you want powerpc, or x86_64, if you
want x86_64, or arm-elf, if you want arm-elf, or sparc-aout if you
want that. The list _is_ endless. If you interested in a specific
target, tell us which one and we'll answer the question specifically.
If you want pre-formed ideas for targets that might be useful, you
can check out:
http://gcc.gnu.org/install/specific.html
http://gcc.gnu.org/buildstat.html
http://gcc.gnu.org/ml/gcc-testresults/
I was thinking there was one other that tried to be exhaustive, but
maybe we removed the complete list years ago.
Aside from that, yes, reading though the config type files is yet
another way.
