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 _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
