Add file

Author: robertodr

.ci/eigen.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -eu -o pipefail
+
+Eigen_VERSION="3.3.4"
+echo "-- Installing Eigen $Eigen_VERSION"
+if [[ -f $HOME/Deps/eigen/include/eigen3/signature_of_eigen3_matrix_library ]]; then
+  echo "-- Eigen $Eigen_VERSION FOUND in cache"
+else
+  echo "-- Eigen $Eigen_VERSION NOT FOUND in cache"
+  cd "$HOME"/Downloads
+  mkdir -p eigen
+  curl -Ls http://bitbucket.org/eigen/eigen/get/${Eigen_VERSION}.tar.gz | tar -xz -C eigen --strip-components=1
+  cd eigen
+  cmake -H. -Bbuild_eigen -DCMAKE_INSTALL_PREFIX="$HOME"/Deps/eigen &> /dev/null
+  cmake --build build_eigen -- install &> /dev/null
+  cd "$TRAVIS_BUILD_DIR"
+  rm -rf "$HOME"/Downloads/eigen
+fi
+echo "-- Done with Eigen $Eigen_VERSION"