Top-Level configure needs autoconf 2.13

[Mohan Embar]

Hi All,

This is in reference to:

http://gcc.gnu.org/ml/java/2006-12/msg00021.html

The top-level configure for gcj-eclipse-merge-branch needs
autoconf 2.13, not 2.59.

In particular, the problem I'm experiencing is that
this section in configure.in:

=================================================
# Base args.  Strip norecursion, cache-file, srcdir, host, build,
# target and nonopt.  These are the ones we might not want to pass
# down to subconfigures.  Also strip program-prefix, program-suffix,
# and program-transform-name, so that we can pass down a consistent
# program-transform-name.  If autoconf has put single quotes around
# any of these arguments (because they contain shell metacharacters)
# then this will fail; in practice this only happens for
# --program-transform-name, so be sure to override --program-transform-name
# at the end of the argument list.
# These will be expanded by make, so quote '$'.
cat <<\EOF_SED > conftestsed
s/ --no[[^ ]]*/ /g
s/ --c[[a-z-]]*[[= ]][[^ ]]*//g
s/ --sr[[a-z-]]*[[= ]][[^ ]]*//g
s/ --ho[[a-z-]]*[[= ]][[^ ]]*//g
s/ --bu[[a-z-]]*[[= ]][[^ ]]*//g
s/ --t[[a-z-]]*[[= ]][[^ ]]*//g
s/ --program-[[pst]][[a-z-]]*[[= ]][[^ ]]*//g
s/ -cache-file[[= ]][[^ ]]*//g
s/ -srcdir[[= ]][[^ ]]*//g
s/ -host[[= ]][[^ ]]*//g
s/ -build[[= ]][[^ ]]*//g
s/ -target[[= ]][[^ ]]*//g
s/ -program-prefix[[= ]][[^ ]]*//g
s/ -program-suffix[[= ]][[^ ]]*//g
s/ -program-transform-name[[= ]][[^ ]]*//g
s/ [[^' -][^ ]*] / /
s/^ *//;s/ *$//
s,\$,$$,g
EOF_SED
sed -f conftestsed <<EOF_SED > conftestsed.out
 ${ac_configure_args} 
EOF_SED
baseargs=`cat conftestsed.out`
rm -f conftestsed conftestsed.out
=================================================

...fails to strip crucial things like --host, --target, etc.
from ac_configure_args because autoconf 2.59 is single-quoting
each command-line argument and they therefore don't start
with a space character, as the above script requires.

One solution would be to fix the actual problem, but doing so
seems to far exceed the scope of gcj-eclipse-merge-branch.

I don't really know how to submit this as a patch
other than a small changelog saying I regenerated
configure with autoconf 2.13.

-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/