4 dnl Find a new-enough version of Perl.
7 # Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004 Free Software
10 # This file is free software; the Free Software Foundation
11 # gives unlimited permission to copy and/or distribute it,
12 # with or without modifications, as long as this notice is preserved.
16 dnl FIXME: don't hard-code 5.003
17 dnl FIXME: should we cache the result?
18 AC_MSG_CHECKING([for perl5.003 or newer])
19 if test "${PERL+set}" = set; then
20 # `PERL' is set in the user's environment.
21 candidate_perl_names="$PERL"
24 candidate_perl_names='perl perl5'
30 PERL="$am_missing_run perl"
31 for perl in $candidate_perl_names; do
32 # Run test in a subshell; some versions of sh will print an error if
33 # an executable is not found, even if stderr is redirected.
34 if ( $perl -e 'require 5.003; use File::Compare' ) > /dev/null 2>&1; then
42 test $found = no && AC_MSG_WARN([
43 WARNING: You don't seem to have perl5.003 or newer installed, or you lack
44 a usable version of the Perl File::Compare module. As a result,
45 you may be unable to run a few tests or to regenerate certain
46 files if you modify the sources from which they are derived.