On Mon, Nov 17, 2008 at 02:43:15PM -0800, Alan Coopersmith wrote: > > -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.
No, thats not true. We can choose to make -xarch=generic to be higher than the lowest supported ISA In this case you can always specify a lower ISA manually. Say, -xarch=386 is not a default anymore, but you can use it. For 32-bit sparc the lowest I believe is -xarch=v7 and default/generic is -xarch=v8plus. You still can use -xarch=v7 manually (and we still keep v7-optimized run-time libs etc). For 64-bit sparc the lowest and the default should be -xarch=sparc. And that is the ISA you get with -xarch=v9. regards, Fedor. > > -- > -Alan Coopersmith- alan.coopersmith at sun.com > Sun Microsystems, Inc. - X Window System Engineering > > _______________________________________________ > tools-compilers mailing list > tools-compilers at opensolaris.org
