imagemagick

USE flags

• bzip2 - Use the bzlib compression library
• corefonts - Use media-fonts/corefonts which is required by some commands
• cxx - Build support for C++ (bindings, extra libraries, code generation, ...)
• djvu - Support DjVu, a PDF-like document format esp. suited for scanned documents
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• fftw - Use FFTW library for computing Fourier transforms
• fontconfig - Support for configuring and customizing font access via media-libs/fontconfig
• fpx - Enable media-libs/libfpx support
• graphviz - Add support for the Graphviz library
• hdri - Enable High Dynamic Range Images formats
• heif - Enable support for ISO/IEC 23008-12:2017 HEIF/HEIC image format using media-libs/libheif
• jbig - Enable jbig-kit support for tiff, Hylafax, ImageMagick, etc
• jpeg - Add JPEG image support
• jpeg2k - Support for JPEG 2000, a wavelet-based image compression format
• lcms - Add lcms support (color management engine)
• lqr - Enable experimental liquid rescale support using media-libs/liblqr
• lzma - Support for LZMA (de)compression algorithm
• opencl - Enable OpenCL support
• openexr - Support for the OpenEXR graphics file format
• openmp - Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
• pango - Enable Pango support using x11-libs/pango
• pdf - Add general support for PDF (Portable Document Format), this replaces the pdflib and cpdflib flags
• perl - Add optional support/bindings for the Perl language
• png - Add support for libpng (PNG images)
• postscript - Enable support for the PostScript language (often with ghostscript-gpl or libspectre)
• q32 - Set quantum depth value to 32
• q8 - Set quantum depth value to 8
• raw - Add support for raw image formats
• static-libs - Build static versions of dynamic libraries as well
• svg - Add support for SVG (Scalable Vector Graphics)
• 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
• truetype - Add support for FreeType and/or FreeType2 fonts
• video_cards_nvidia - VIDEO_CARDS setting to build driver for nvidia video cards
• webp - Add support for the WebP image format
• wmf - Add support for the Windows Metafile vector image format
• X - Add support for X11
• xml - Add support for XML files
• zlib - Add support for zlib (de)compression

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