sci-geosciences/gmt
Powerful map generator
USE Flags
blas
Global: Adds support for the virtual/blas numerical library
+fftw
* This flag is undocumented *
ffmpeg
Global: Enable ffmpeg-based audio/video codec support
+gdal
* This flag is undocumented *
geos
Global: Add the sci-libs/geos library for exact topological tests
gmttria
Global: Non GNU triangulation method, more efficient
Local: Non GNU triangulation method, more efficient
lapack
Global: Adds support for the virtual/lapack numerical library
openmp
Global: Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
pcre
Global: Adds support for Perl Compatible Regular Expressions
threads
Global: Adds threads support for various packages. Usually pthreads
zlib
Global: Adds support for zlib (de)compression