$ autoreconf --install
configure.ac:5: warning: The macro `AC_CONFIG_HEADER' is obsolete.
configure.ac:5: You should run autoupdate.
./lib/autoconf/status.m4:719: AC_CONFIG_HEADER is expanded from...
configure.ac:5: the top level
configure.ac:100: warning: The macro `AC_HEADER_STDC' is obsolete.
configure.ac:100: You should run autoupdate.
./lib/autoconf/headers.m4:704: AC_HEADER_STDC is expanded from...
configure.ac:100: the top level
configure.ac:12: installing './compile'
configure.ac:7: installing './install-sh'
configure.ac:7: installing './missing'
Makefile.am: installing './depcomp'
docs/Makefile.am:1: installing 'docs/texinfo.tex'
On MacOS 12.4 Monterey, autoconf 2.71: