3 dnl Copyright (C) 1998-2001, 2003-2004, 2007, 2009-2024 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
9 dnl Find a new-enough version of Perl.
13 dnl FIXME: don't hard-code 5.005
14 AC_CACHE_CHECK([for Perl 5.005 or newer],
17 if test "${PERL+set}" = set; then
18 # 'PERL' is set in the user's environment.
19 candidate_perl_names="$PERL"
22 candidate_perl_names='perl perl5'
27 for perl in $candidate_perl_names; do
28 # Run test in a subshell; some versions of sh will print an error if
29 # an executable is not found, even if stderr is redirected.
30 if ( $perl -e 'require 5.005; use File::Compare; use warnings;' ) > /dev/null 2>&1; then
37 if test "$gl_cv_prog_perl" != no; then
40 PERL="$am_missing_run perl"
42 WARNING: You don't seem to have perl5.005 or newer installed, or you lack
43 a usable version of the Perl File::Compare module. As a result,
44 you may be unable to run a few tests or to regenerate certain
45 files if you modify the sources from which they are derived.