- change foreign key check, so that it is enabled outside of the
transaction where we insert things, and can make the sqlite3
process fail in case of violations, without the postcheck done
in the autoconf build
- autoconf and cmake builds: simplification related to the above
(which also means that cmake builds now have the fkey check, which
was omitted until now)
This work mostly consists of:
- a C++ implementation of the ISO-19111:2018 / OGC Topic 2
"Referencing by coordinates" classes to represent Datums,
Coordinate systems, CRSs (Coordinate Reference Systems) and
Coordinate Operations.
- methods to convert between this C++ modeling and WKT1, WKT2
and PROJ string representations of those objects
- management and query of a SQLite3 database of CRS and Coordinate Operation definition
- a C API binding part of those capabilities
This is all-in-one squashed commit of the work of
https://github.com/OSGeo/proj.4/pull/1040
Even Rouault