>>>>> "Paul" == Paul Eggert <[EMAIL PROTECTED]> writes:
Paul> How about if we add an AC_PROG_EXPR that searches for a working
Paul> expr and sets EXPR to its value, or to "false" if it can't find
Paul> one. Then AS_DIRNAME_EXPR can AC_REQUIRE([AC_PROG_EXPR]) and
Paul> use "$EXPR" instead of "expr".
That's the plan, that's why I need to know what shall be tested.
But our troubles could be worse than this, since `expr' is not used
only in AS_DIRNAME. For instance any CVS configure contains
ac_optarg=`expr "x$ac_option" : 'x[^=]*=\(.*\)'`
in its parsing the options.
So it is my understanding that
./configure --bindir=
is equivalent to
./configure --bindir=0
on these systems.
Such a good news...
