AC_PROG_PERL_VERSION(VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
, 

2002-09-25

Dean Povey <povey@wedgetail.com>

AllPermissive
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. Users of this software should generally follow the principles of the MIT License includings its disclaimer.

cryp.to ac-archive's Installed Packages (released)

Makes sure that perl supports the version indicated. If true the shell commands in ACTION-IF-TRUE are executed. If not the shell commands in ACTION-IF-FALSE are run. Note if $PERL is not set (for example by running AC_CHECK_PROG or AC_PATH_PROG), AC_CHECK_PROG(PERL, perl, perl) will be run.

Example:

 AC_PROG_PERL_VERSION(5.6.0)

This will check to make sure that the perl you have supports at least version 5.6.0.

AC_DEFUN([AC_PROG_PERL_VERSION],[dnl
# Make sure we have perl
if test -z "$PERL"; then
AC_CHECK_PROG(PERL,perl,perl)
fi

# Check if version of Perl is sufficient
ac_perl_version="$1"

if test "x$PERL" != "x"; then
  AC_MSG_CHECKING(for perl version greater than or equal to $ac_perl_version)
  # NB: It would be nice to log the error if there is one, but we cannot rely
  # on autoconf internals
  $PERL -e "use $ac_perl_version;" > /dev/null 2>&1
  if test $? -ne 0; then
    AC_MSG_RESULT(no);
    $3
  else
    AC_MSG_RESULT(ok);
    $2
  fi
else
  AC_MSG_WARN(could not find perl)
fi
])dnl