On 07/18/2013 11:05 AM, Guido Günther wrote: >> >> When was AC_LINK_IFELSE first introduced to autoconf ? > At least 2.64 has it: > > http://www.flameeyes.eu/autotools-mythbuster/forwardporting/autoconf.html We require support back to 2.59 + gnulib, for use on RHEL 5. Thankfully: $ cd autoconf.git $ git grep AC_LINK_IFELSE AUTOCONF-2.59 | wc 75 289 6300 this is one of those macros that works without needing any gnulib help. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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