Fedor Sergeev wrote:
> On Mon, Nov 17, 2008 at 02:01:23PM -0800, Alan Coopersmith wrote:
>> No, -m64 indicates "compile in 64-bit mode", not "Use exactly the original v9
>> ISA with no later extensions."
>
> Oh, come on.
> -xarch=v9 means "compile in LP64 mode using exactly the original v9 isa with
> no
> later extensions".
Right, but the question you were responding to, I specifically asked for the no
later extensions behavior.
> -m64 -xarch=generic (which is equivalent to -m64, as -xarch=generic is
> default)
> does just that.
I know it's the default now, I was looking for a option to future-proof our
Makefiles against future compiler upgrades, when the compiler team next decides
to update the default ISA (like the bump in Studio 11 or 12 from -xarch=v8 to
-xarch=v8plus as default), since when building Solaris we still need to support
platforms with CPU's like the Fujistu SPARC64 without VIS and other extensions.
>From other documentation, it sounds like -xarch=generic is only to override
other -xarch settings to restore the default, and there is no option to allow
specifying a lower ISA revision than the default.
--
-Alan Coopersmith- alan.coopersmith at sun.com
Sun Microsystems, Inc. - X Window System Engineering
