gdl

USE flags

• eigen - Build matrix manipulation with dev-cpp/eigen
• fftw - Use FFTW library for computing Fourier transforms
• glpk - Use GNU Linear Programming Kit sci-mathematics/glpk
• graphicsmagick - Build and link against GraphicsMagick instead of ImageMagick (requires USE=imagemagick if optional)
• gshhs - Add support for projection adn continent maps with sci-geosciences/gshhs-data
• hdf - Add support for the Hierarchical Data Format v.4
• hdf5 - Add support for the Hierarchical Data Format v5
• imagemagick - Enable optional support for the ImageMagick or GraphicsMagick image converter
• netcdf - Enable NetCDF data format support
• openmp - Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
• png - Add support for libpng (PNG images)
• postscript - Enable support for the PostScript language (often with ghostscript-gpl or libspectre)
• proj - Add support for sci-libs/proj (geographic projections)
• python - Add optional support/bindings for the Python language
• python_single_target_python3_10 - Build for Python 3.10 only
• python_single_target_python3_11 - Build for Python 3.11 only
• python_single_target_python3_9 - Build for Python 3.9 only
• shapelib - Add support for manipulating ESRI Shapefiles with sci-libs/shapelib
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• tiff - Add support for the TIFF image format
• udunits - Add support for manipulating units of physical quantities
• wxwidgets - Add support for wxWidgets/wxGTK GUI toolkit