Code:
checking for BSD compatible install...
This is just the usual GNU autohell cruft. 30 years ago there Unices, which didn't have a /usr/bin/install compatible to the version BSD shipped. So autoconf still checks for this. It also checks for a dozen different Fortran compilers, nobody uses today.
The whole configure.sh concept is broken, all these "checks" are executed even if the source is intended to be compiled on GNU/Linux only.