Remove code checking for CMake < 3.5

As the CMake version is at least 3.5 the code checking for earlier versions can be removed.

CMakeLists.txt

@@ -592,8 +592,6 @@ set ( EIGEN_DEFINITIONS "")
 set ( EIGEN_INCLUDE_DIR "${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}" )
 set ( EIGEN_ROOT_DIR ${CMAKE_INSTALL_PREFIX} )
 
-# Interface libraries require at least CMake 3.0
-if (NOT CMAKE_VERSION VERSION_LESS 3.0)
 include (CMakePackageConfigHelpers)
 
 # Imported target support
@@ -637,38 +635,6 @@ if (NOT CMAKE_VERSION VERSION_LESS 3.0)
 
 install (EXPORT Eigen3Targets NAMESPACE Eigen3:: DESTINATION ${CMAKEPACKAGE_INSTALL_DIR})
 
-else ()
-  # Fallback to legacy Eigen3Config.cmake without the imported target
-
-  # If CMakePackageConfigHelpers module is available (CMake >= 2.8.8)
-  # create a relocatable Config file, otherwise leave the hardcoded paths
-  include(CMakePackageConfigHelpers OPTIONAL RESULT_VARIABLE CPCH_PATH)
-
-  if(CPCH_PATH)
-    configure_package_config_file (
-      ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Eigen3ConfigLegacy.cmake.in
-      ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
-      PATH_VARS EIGEN_INCLUDE_DIR EIGEN_ROOT_DIR
-      INSTALL_DESTINATION ${CMAKEPACKAGE_INSTALL_DIR}
-      NO_CHECK_REQUIRED_COMPONENTS_MACRO # Eigen does not provide components
-    )
-  else()
-    # The PACKAGE_* variables are defined by the configure_package_config_file
-    # but without it we define them manually to the hardcoded paths
-    set(PACKAGE_INIT "")
-    set(PACKAGE_EIGEN_INCLUDE_DIR ${EIGEN_INCLUDE_DIR})
-    set(PACKAGE_EIGEN_ROOT_DIR ${EIGEN_ROOT_DIR})
-    configure_file ( ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Eigen3ConfigLegacy.cmake.in
-                     ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
-                     @ONLY ESCAPE_QUOTES )
-  endif()
-
-  write_basic_package_version_file( Eigen3ConfigVersion.cmake
-                                    VERSION ${EIGEN_VERSION_NUMBER}
-                                    COMPATIBILITY SameMajorVersion )
-
-endif ()
-
 install ( FILES ${CMAKE_CURRENT_SOURCE_DIR}/cmake/UseEigen3.cmake
                 ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
                 ${CMAKE_CURRENT_BINARY_DIR}/Eigen3ConfigVersion.cmake

lapack/CMakeLists.txt

@@ -137,16 +137,15 @@ if(EXISTS ${eigen_full_path_to_testing_lapack})
   add_subdirectory(testing/MATGEN)
   add_subdirectory(testing/LIN)
   add_subdirectory(testing/EIG)
-  cmake_policy(SET CMP0026 OLD)
   macro(add_lapack_test output input target)
     set(TEST_INPUT "${LAPACK_SOURCE_DIR}/testing/${input}")
     set(TEST_OUTPUT "${LAPACK_BINARY_DIR}/TESTING/${output}")
-    get_target_property(TEST_LOC ${target} LOCATION)
     string(REPLACE "." "_" input_name ${input})
     set(testName "${target}_${input_name}")
     if(EXISTS "${TEST_INPUT}")
-      add_test(LAPACK-${testName} "${CMAKE_COMMAND}"
-        -DTEST=${TEST_LOC}
+      add_test(NAME LAPACK-${testName}
+        COMMAND "${CMAKE_COMMAND}"
+        -DTEST=$<TARGET_FILE:${target}>
         -DINPUT=${TEST_INPUT} 
         -DOUTPUT=${TEST_OUTPUT} 
         -DINTDIR=${CMAKE_CFG_INTDIR}

unsupported/test/CMakeLists.txt

@@ -321,18 +321,11 @@ if(CUDA_FOUND AND EIGEN_TEST_CUDA)
     set(EIGEN_CUDA_RELAXED_CONSTEXPR "--relaxed-constexpr")
   endif()
 
-  if(( (NOT EIGEN_TEST_CXX11) OR (CMAKE_VERSION VERSION_LESS 3.3)) AND EIGEN_TEST_CXX11)
-    set(EIGEN_CUDA_CXX11_FLAG "-std=c++11")
-  else()
-    # otherwise the flag has already been added because of the above set(CMAKE_CXX_STANDARD 11)
-    set(EIGEN_CUDA_CXX11_FLAG "")
-  endif()
-
   set(NVCC_ARCH_FLAGS)
   foreach(ARCH IN LISTS EIGEN_CUDA_COMPUTE_ARCH)
     string(APPEND NVCC_ARCH_FLAGS " -gencode arch=compute_${ARCH},code=sm_${ARCH}")
   endforeach()
-  set(CUDA_NVCC_FLAGS  "${EIGEN_CUDA_CXX11_FLAG} ${EIGEN_CUDA_RELAXED_CONSTEXPR} -Xcudafe \"--display_error_number\" ${NVCC_ARCH_FLAGS} ${CUDA_NVCC_FLAGS}")
+  set(CUDA_NVCC_FLAGS  "${EIGEN_CUDA_RELAXED_CONSTEXPR} -Xcudafe \"--display_error_number\" ${NVCC_ARCH_FLAGS} ${CUDA_NVCC_FLAGS}")
   cuda_include_directories("${CMAKE_CURRENT_BINARY_DIR}" "${CUDA_TOOLKIT_ROOT_DIR}/include")
   set(EIGEN_ADD_TEST_FILENAME_EXTENSION "cu")