Autoconf can use a cache file to speed up tests: https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/Cache-Files.html https://www.gnu.org/softw

Autoconf can use a cache file to speed up tests: https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/Cache-Files.html https://www.gnu.org/software/autoconf/manual/autoconf-2.60/h...