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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
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<head>
<title>
Autoconf Macro: ac_prog_perl_version
</title>
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<a href=
"http://autoconf-archive.cryp.to/ac_prog_perl_version.m4">Download M4
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<hr>
<h1>
ac_prog_perl_version
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AC_PROG_PERL_VERSION(VERSION, [ACTION-IF-TRUE],
[ACTION-IF-FALSE])</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
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 $PERL is not set (for example by running
AC_CHECK_PROG or AC_PATH_PROG), AC_CHECK_PROG(PERL, perl, perl) will be
run.
</p>
<p>
Example:
</p>
<pre>
AC_PROG_PERL_VERSION(5.6.0)
</pre>
<p>
This will check to make sure that the perl you have supports at least
version 5.6.0.
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Dean Povey <povey@wedgetail.com>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2002-09-25
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AC_PROG_PERL_VERSION],[dnl
# Make sure we have perl
if test -z "$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
</pre>
</div>
</body>
</html>
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