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AX_PROG_RUBY_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE])
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_RUBY can be used to set that variable prior to running this macro. The $RUBY_VERSION variable will be valorized with the detected version.
http://autoconf-archive.cryp.to/ax_prog_ruby_version.m4
Copyright © 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.