Hi, I am writing to ask for a solution to my Autoconf problem related to Libtool. dxhdf5, a package which I am developing, does not have auto-generated files in CVS. When someone checks it out from CVS, then only "autoreconf -i" is required to generate all the needed files. But because of this reason I cannot be sure what version of auto-tools one is using, in particular I don't know the version of Libtool. The package requires Libtool 1.5, and any previous version should not be used. Is there a way to check for the version of Libtool in configure.in? My dream would be to get a macro like "LT_PREREQ(1.5)". How to check for the version of Libtool? I do not want to search the "ltmain.sh" file for "VERSION=\(..*\)$". Please send me a copy of your response, because I am not on the list. Thank you & best, Irek