On 03/30/2010 03:13 AM, Konstantin Andreev wrote: > Hello. > > I need to write a macro, which will be expanded by various versions of > autoconf, including 2.13 :( Simultaneously targeting 2.59 and newer is moderately easy, and still supported by this list. Supporting 2.50 and newer is a bit tougher, but not intractable. But simultaneously supporting 2.13 and 2.50+ is MUCH harder, with very few people even attempting it (my gut feel is that it is technically still doable, although I won't be the one doing it). If m4_version_compare is defined (added in 2.53, documented in 2.62), then use it. Otherwise, you know that you are targeting an older autoconf. Read this thread for another person who attempted this feat for PHP, and later gave up, because the changes from 2.13 to 2.50 were so dramatic. He ended up instead keeping old PHP on the old autoconf, and starting from scratch with newer autoconf on the next new version of PHP. http://lists.gnu.org/archive/html/autoconf/2009-11/msg00076.html -- Eric Blake eblake@xxxxxxxxxx +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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