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INSTALL.md

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Building GEOS From Source

Prerequisites

GEOS has no external library dependencies and can be built with any C++14 compiler.

Unix

GEOS can be built on Unix systems using the CMake build system.

To build GEOS using CMake, create a build directory and run the cmake command from that location:

mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release ..

Setting CMAKE_BUILD_TYPE to Release is necessary to enable compiler optimizations.

Once the cmake tool has run, GEOS can be built by:

  • running make and installed by running make install, or
  • running cmake --build . and cmake --build . --target install

The entire test suite can be run by:

  • using make check, or
  • using ctest --output-on-failure .

The ctest command can be used to control which tests are run. For example, ctest -R unit-capi -j2 uses a regular expression to run all tests associated with the C API, using two processes in parallel. A list of available tests can be obtained using ctest -N.

Microsoft Windows

GEOS can be built with Microsoft Visual C++ by opening the CMakeLists.txt in the project root using File > Open > CMake.

Build with CMake generator for Ninja (fast)

If you prefer the command-line, in the Visual Studio 2019 command prompt, x64 Native Tools Command Prompt for VS 2019 or x64_x86 Cross Tools Command Prompt for VS 2019 run:

cmake -S . -B _build_vs2019_ninja -G Ninja -DCMAKE_BUILD_TYPE=Release
cmake --build _build_vs2019_ninja -j 16 --verbose

Build with CMake generator for MSBuild (default)

In the non-specific Command Prompt:

64-bit
cmake -S . -B _build_vs2019x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_GENERATOR_TOOLSET=host=x64
cmake --build _build_vs2019x64 --config Release -j 16 --verbose
32-bit
cmake -S . -B _build_vs2019x32 -G "Visual Studio 16 2019" -A x32 -DCMAKE_GENERATOR_TOOLSET=host=x64
cmake --build _build_vs2019x32 --config Release -j 16 --verbose