File eigen3-3.3.1-fixcmake.patch of Package eigen3

Index: eigen-3.3.8/CMakeLists.txt
===================================================================
--- eigen-3.3.8.orig/CMakeLists.txt
+++ eigen-3.3.8/CMakeLists.txt
@@ -536,7 +536,7 @@ set ( EIGEN_VERSION_MAJOR  ${EIGEN_WORLD
 set ( EIGEN_VERSION_MINOR  ${EIGEN_MAJOR_VERSION} )
 set ( EIGEN_VERSION_PATCH  ${EIGEN_MINOR_VERSION} )
 set ( EIGEN_DEFINITIONS "")
-set ( EIGEN_INCLUDE_DIR "${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}" )
+set ( EIGEN_INCLUDE_DIR ${INCLUDE_INSTALL_DIR} )
 set ( EIGEN_ROOT_DIR ${CMAKE_INSTALL_PREFIX} )
 
 # Interface libraries require at least CMake 3.0