Is there a versioned autoconf macro index, so I know which version to put in AC_PREREQ?

I would like to use AC_PREREQthe minimum version of my to indicate configure.ac. Neither the Versioning chapter nor the alphabetical index of the available macros in the autoconf manual tell me when specific macros are being entered (at least the chapter on Obsolete Macros tells me not to use).

Is there an easier way than comparing old versions of the manual or viewing the change log to display the required version for the macro, for example AC_PROG_SED?