source $GRIMOIRE/CMAKE_FUNCTIONS
           SPELL=eigen3
          SPELLX=eigen
         VERSION=3.4.1
     SOURCE_HASH=sha512:806be7536f811eb77898a9431eac4fe446fbdd41c2a33ebe30e56750920c105e24bc41d8cbb4a5c01ee770ded9c58f06ff37058d17c6e2301bc9021a864bb549
SOURCE_DIRECTORY=$BUILD_DIRECTORY/eigen-$VERSION
          SOURCE=eigen-$VERSION.tar.bz2
	WEB_SITE=https://gitlab.com/libeigen/eigen
   SOURCE_URL[0]=$WEB_SITE/-/archive/$VERSION/$SOURCE
      LICENSE[0]=LGPL
         ENTERED=20110322
        KEYWORDS="linear algebra"
           SHORT="C++ template library for vector and matrix math"
cat << EOF
Eigen is a C++ template library for linear algebra: vectors, matrices,
and related algorithms. It
is versatile, fast, elegant and works on many platforms
EOF
