Dear all, I just noticed a behaviour of a configure script that surprises me. The configure.ac script does contain the AC_CANONICAL_BUILD, AC_CANONICAL_HOST and AC_CANONICAL_TARGET macros. I am calling the generated configure script as follows: ./configure --build=x86_64-pc-linux-gnu --host=aarch64-linux-gnu I am getting the following output: checking build system type... x86_64-pc-linux-gnu checking host system type... aarch64-unknown-linux-gnu checking target system type... aarch64-unknown-linux-gnu I am okay with the first line but to absolutely not understandthe second and third line. Why do the host and system types contain an "unknown" string? Since I gave the --host=aarch64-linux-gnu arguemnt, I expected this to be the canonical system type. And also, I thought the target system type would default to the user-provided host system type, which does not seem to be the case. Should I then rely on the host_alias and target_alias variables? It feels odd because they may not be in canonical form and also this means that the target will have to be explicitly given, which I thought I don't have to do. Any help would be greatly appreciated. Thanks! Sébastien.
