Re: changing the default compilers for autoconf

[Sanjay Gianchandani]

err i was gonna mail that to Ralf only, but ended mailing to the mailing
list(by mistake)
sry for spamming all of u guys, but if u hav any ideas, then pls do guide
me...
thanks!
sanjay

On 9/17/07, Sanjay Gianchandani <address@hidden> wrote:
>
> Hi Ralf,
> sorry for mailing you directly, but I wasnt getting much response on the
> mailing list, and I am still wondering as to which direction to proceed...
> these changes that u suggested, if i inject them in acspecific.m4 , wont
> that serve my purpose?
> I am not exactly sure though, as I am not completely aware of the flow of
> autoconf...
> any help would be greatly appreciated...
> moreover, I read somewhere that autoconf also uses some flags at compile
> time, which means that I would need to ensure that these flags work in the
> same way for the "changed" compiler too, right? any ideas abt which flags
> autoconf uses?
>
> any help would b greatly appreciated!
> thanks,
> sanjay
>
> On 9/7/07, Ralf Wildenhues <address@hidden > wrote:
> >
> > Hello Sanjay,
> >
> > * Sanjay Gianchandani wrote on Fri, Sep 07, 2007 at 02:55:16PM CEST:
> > > I have been working on Solaris, and have been trying to increase the
> > > efficiency of autoconf built softwares on the system.
> > > The main issue here is that autoconf by default, and as a rule, uses
> > the GNU
> > > based compilers to make the software, while
> > > on Solaris, Sun Studio compilers prove to be much more efficient.
> >
> > For yourself, just get in the habit of using
> >   .../configure -C CC=cc CXX=CC F77=f77 FC=f95
> >
> > or write a config.site file that sets these as defaults once and for
> > all, for your system; see
> > <http://www.gnu.org/software/autoconf/manual/html_node/Site-Defaults.html
> > >
> > for more information.
> >
> > If you want to change the defaults for your specific package, but every
> > user of it, then you can put something like
> >   : ${CC=cc}
> >   : ${CXX=CC}
> >   # ...
> >
> > in your configure.ac, right before AC_PROG_CC; but be warned that users
> > may not like your decision all that much and at least require that you
> > do this only on Solaris.  For that, invoke AC_CANONICAL_HOST and then
> > match $host against *-*-solaris*:
> >   AC_CANONICAL_HOST
> >   case $host in
> >   *-*-solaris*)  : ${CC=cc}  ... ;;
> >   esac
> >   AC_PROG_CC
> >
> > As to changing Autoconf's defaults globally, i.e., for everyone and
> > every package without package-specific modifications: preference of GCC,
> >
> > the GNU Compiler Collection, is a policy decision.  From an effort point
> > of view, you'd have more luck in improving GCC so that it ends up being
> > the better compiler, than getting GNU to promote a proprietary compiler
> > over its own free one.  ;-)
> >
> > Cheers,
> > Ralf
> >
>
>
>
> --
>
> ****************************************************************************
> §âñjây
> ************************Words from my heart****************************
> We dont need no education!
> give us free pizza instead ;)
> *****************************************************************************
>
>



-- 
****************************************************************************
§âñjây
************************Words from my heart****************************
We dont need no education!
give us free pizza instead ;)
*****************************************************************************