Add cmake config files

3 files changed, 62 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ad0269ea6..4135339b1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -418,3 +418,31 @@ else()
 endif()
 
 message(STATUS "")
+
+set ( EIGEN_CONFIG_CMAKE_PATH
+      lib${LIB_SUFFIX}/cmake/eigen3
+      CACHE PATH "The directory where the CMake files are installed"
+    )
+if ( NOT IS_ABSOLUTE EIGEN_CONFIG_CMAKE_PATH )
+  set ( EIGEN_CONFIG_CMAKE_PATH ${CMAKE_INSTALL_PREFIX}/${EIGEN_CONFIG_CMAKE_PATH} )
+endif ()
+
+set ( EIGEN_USE_FILE ${EIGEN_CONFIG_CMAKE_PATH}/UseEigen3.cmake )
+set ( EIGEN_VERSION_STRING ${EIGEN_VERSION_NUMBER} )
+set ( EIGEN_VERSION_MAJOR  ${EIGEN_WORLD_VERSION} )
+set ( EIGEN_VERSION_MINOR  ${EIGEN_MAJOR_VERSION} )
+set ( EIGEN_VERSION_PATCH  ${EIGEN_MINOR_VERSION} )
+set ( EIGEN_DEFINITIONS "")
+set ( EIGEN_INCLUDE_DIR ${INCLUDE_INSTALL_DIR} )
+set ( EIGEN_INCLUDE_DIRS ${EIGEN_INCLUDE_DIR} )
+set ( EIGEN_ROOT_DIR ${CMAKE_INSTALL_PREFIX} )
+
+configure_file ( ${CMAKE_SOURCE_DIR}/cmake/Eigen3Config.cmake.in
+                 ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
+                 @ONLY ESCAPE_QUOTES
+               )
+
+install ( FILES ${CMAKE_SOURCE_DIR}/cmake/UseEigen3.cmake
+                ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
+          DESTINATION ${EIGEN_CONFIG_CMAKE_PATH}
+        )
diff --git a/cmake/Eigen3Config.cmake.in b/cmake/Eigen3Config.cmake.in
new file mode 100644
index 000000000..257c595ed
--- /dev/null
+++ b/cmake/Eigen3Config.cmake.in
@@ -0,0 +1,28 @@
+#                                               -*- cmake -*-
+#
+#  Eigen3Config.cmake(.in)
+
+# Use the following variables to compile and link against Eigen:
+#  EIGEN_FOUND              - True if Eigen was found on your system
+#  EIGEN_USE_FILE           - The file making Eigen usable
+#  EIGEN_DEFINITIONS        - Definitions needed to build with Eigen
+#  EIGEN_INCLUDE_DIR        - Directory where signature_of_eigen3_matrix_library can be found
+#  EIGEN_INCLUDE_DIRS       - List of directories of Eigen and it's dependencies
+#  EIGEN_ROOT_DIR           - The base directory of Eigen
+#  EIGEN_VERSION_STRING     - A human-readable string containing the version
+#  EIGEN_VERSION_MAJOR      - The major version of Eigen
+#  EIGEN_VERSION_MINOR      - The minor version of Eigen
+#  EIGEN_VERSION_PATCH      - The patch version of Eigen
+
+set ( EIGEN_FOUND 1 )
+set ( EIGEN_USE_FILE     "@EIGEN_USE_FILE@" )
+
+set ( EIGEN_DEFINITIONS  "@EIGEN_DEFINITIONS@" )
+set ( EIGEN_INCLUDE_DIR  "@EIGEN_INCLUDE_DIR@" )
+set ( EIGEN_INCLUDE_DIRS "@EIGEN_INCLUDE_DIRS@" )
+set ( EIGEN_ROOT_DIR     "@EIGEN_ROOT_DIR@" )
+
+set ( EIGEN_VERSION_STRING "@EIGEN_VERSION_STRING@" )
+set ( EIGEN_VERSION_MAJOR  "@EIGEN_VERSION_MAJOR@" )
+set ( EIGEN_VERSION_MINOR  "@EIGEN_VERSION_MINOR@" )
+set ( EIGEN_VERSION_PATCH  "@EIGEN_VERSION_PATCH@" )
diff --git a/cmake/UseEigen3.cmake b/cmake/UseEigen3.cmake
new file mode 100644
index 000000000..a38bac82d
--- /dev/null
+++ b/cmake/UseEigen3.cmake
@@ -0,0 +1,6 @@
+#                                               -*- cmake -*-
+#
+#  UseEigen3.cmake
+
+add_definitions     ( ${EIGEN3_DEFINITIONS} )
+include_directories ( ${EIGEN3_INCLUDE_DIRS} )