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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_prog_ruby_version.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PROG_RUBY_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE])
#
# DESCRIPTION
#
# Makes sure that ruby 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 $RUBY is not set (for example by
# running AC_CHECK_PROG or AC_PATH_PROG) the macro will fail.
#
# Example:
#
# AC_PATH_PROG([RUBY],[ruby])
# AC_PROG_RUBY_VERSION([1.8.0],[ ... ],[ ... ])
#
# This will check to make sure that the ruby you have supports at least
# version 1.6.0.
#
# NOTE: This macro uses the $RUBY variable to perform the check.
# AX_WITH_PROG([RUBY],[ruby],[VALUE-IF-NOT-FOUND],[PATH]) can be used to
# set that variable prior to running this macro. The $RUBY_VERSION
# variable will be valorized with the detected version.
#
# LICENSE
#
# Copyright (c) 2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 11
AC_DEFUN([AX_PROG_RUBY_VERSION],[
AC_REQUIRE([AC_PROG_SED])
AC_REQUIRE([AC_PROG_GREP])
AS_IF([test -n "$RUBY"],[
ax_ruby_version="$1"
AC_MSG_CHECKING([for ruby version])
changequote(<<,>>)
ruby_version=`$RUBY --version 2>&1 | $GREP "^ruby " | $SED -e 's/^.* \([0-9]*\.[0-9]*\.[0-9]*\) .*/\1/'`
changequote([,])
AC_MSG_RESULT($ruby_version)
AC_SUBST([RUBY_VERSION],[$ruby_version])
AX_COMPARE_VERSION([$ax_ruby_version],[le],[$ruby_version],[
:
$2
],[
:
$3
])
],[
AC_MSG_WARN([could not find the ruby interpreter])
$3
])
])
|
