AC_RUN_LOG undocumented ?

[John Levon]

I cannot find AC_RUN_LOG in the info pages macro index on my system
(2.53). Furthermore, the online manual :

http://www.gnu.org/manual/autoconf/html_chapter/autoconf_20.html#SEC194

appears to have broken indices - the given anchor does not exist

We have a macro that uses this AC_RUN_LOG. What does it do ? And is
there an equivalent that also works on autoconf 2.13 ?

thanks
john