GEOS is a complete C++ implementation of the functions and predicates defined
in the OpenGIS "Simple Features for SQL" specification. It includes high
quality implementations of all the important spatial relationships and
operations, robust versions of all functions in the dimensionally extended
9 intersection predicate model, implementations of the operators, Buffer(),
Union(), and Intersection(), and all other SFSQL functions including Area(),
Length(), Centroid(), etc.
BUILDING, TESTING, INSTALLING
# make check
# make install
If you use Microsoft Visual C++ (7.1 or later) compiler, you can build
GEOS using NMAKE program and provided makefile.vc files.
If you are building from SVN checkout, first run: autogen.bat
nmake /f makefile.vc MSVC_VER=1400
where 1400 is version n