Geo::LibProj::FFI This module is a foreign function interface to the PROJ coordinate transformation library. Please see the PROJ library's C function reference for further documentation. You should be able to use those C functions as if they were Perl. This module is functional, but incomplete. INSTALLATION This is a Perl module distribution. It should be installed with whichever tool you use to manage your installation of Perl, e.g. any of cpanm . cpan . cpanp -i . Consult http://www.cpan.org/modules/INSTALL.html for further instruction. Should you wish to install this module manually, the procedure is perl Makefile.PL make make test make install API LICENSE The API this module gives access to is the "proj.h" API, which is available under the terms of the Expat MIT license. Copyright (c) 2016, 2017, Thomas Knudsen / SDFE Copyright (c) 2018, Even Rouault The API designers didn't write this Perl module, and the module author didn't design the API. COPYRIGHT AND LICENSE This software is Copyright (c) 2021 by Arne Johannessen. This is free software, licensed under: The Artistic License 2.0 (GPL Compatible)