Project homepage: http://geos.osgeo.org/

Branch	Debbie	Travis CI	GitLab CI	AppVeyor	Drone
trunk

Using Autotools:

./autogen.sh  # in ${srcdir}, if obtained from SVN or GIT
${srcdir}/configure # in build dir

Using CMake:

cmake ${srcdir} # in build dir

Now, all versions:

make
make check
make install # as root
ldconfig # as root

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 or GIT checkout, first run: autogen.bat Then:

nmake /f makefile.vc MSVC_VER=1400

where 1400 is version number of Visual C++ compiler, here Visual C++ 8.0 from Visual Studio 2005 (supported versions are 1300, 1310, 1400 and 1500). The bootstrap.bat step is required to generate a couple of header files.

In order to build debug configuration of GEOS, additional flag DEBUG=1 is required:

nmake /f makefile.vc MSVC_VER=1400 DEBUG=1

To compile programs against the C lib (recommended):

CFLAGS += `geos-config --cflags`
LDFLAGS += `geos-config --ldflags` -lgeos_c
#include <geos_c.h>

Example usage:

capi/geostest.c contains basic usage examples.

NB: The C++ interface should not be used directly; the GEOS project views it as a bug for another program to use the C++ interface or even to directly link against the C++ library. The C++ library name will change on every minor release because it is too hard to know if there have been ABI changes. (The C library uses the C++ interface, but the C library follows normal ABI-change-sensitive versioning, so programs that link only against the C library should work without relinking when GEOS is upgraded.)

To compile programs against the C++ lib:

CFLAGS += `geos-config --cflags`
LDFLAGS += `geos-config --ldflags` -lgeos
#include <geos.h>

Basic usage examples can be found in doc/example.cpp.

Ruby bindings are fully supported. To build, use the --enable-ruby option when configuring:

./configure ... --enable-ruby

PHP bindings are fully supported. To build, use the --enable-php option when configuring:

./configure ... --enable-php

Since version 3.0, the Python bindings are unsupported. Recommended options:

1. Become or recruit a new maintainer.
2. Use Shapely with Python versions 2.4 or greater.
3. Simply call functions from libgeos_c via Python ctypes.

To build Doxygen documentation:

cd doc
make doxygen-html