Android and iOS triplets are still not recognized. I'm using config.guess and confg.sub dated 2020- 2020-01-01. It is the latest fetched using https://www.gnu.org/software/gettext/manual/html_node/config_002eguess.html. According to the docs at https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Specifying-Target-Triplets.html: Autoconf-generated configure scripts ... target triplet, which has the form: ‘cpu-vendor-os’, where os can be ‘system’ or ‘kernel-system’ OK, sounds good. Unfortunately, none of these are recognized: armv7a-android-linux aarch64-android-linux x86-android-linux i686-android-linux x86_64-android-linux amd64-android-linux Swapping-in "aosp" (Android Open Source Project, which is the official vendor name) for "android" also fails. And none of these are recognized for Apple mobile devices: armv7a-apple-ios armv7s-apple-ios aarch64-apple-ios armv8a-apple-ios arm64-apple-ios These devices have been around for about a decade. There is no reason to fail to recognize them after 10 years. Jeff