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.

3 files changed, 46 insertions, 88 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3226338ff..7ba7d3872 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -592,82 +592,48 @@ 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
-  add_library (eigen INTERFACE)
-  add_library (Eigen3::Eigen ALIAS eigen)
-  target_compile_definitions (eigen INTERFACE ${EIGEN_DEFINITIONS})
-  target_include_directories (eigen INTERFACE
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-    $<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>
-  )
-
-  # Export as title case Eigen
-  set_target_properties (eigen PROPERTIES EXPORT_NAME Eigen)
-
-  install (TARGETS eigen EXPORT Eigen3Targets)
-
-  configure_package_config_file (
-    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Eigen3Config.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
-  )
-  # Remove CMAKE_SIZEOF_VOID_P from Eigen3ConfigVersion.cmake since Eigen does
-  # not depend on architecture specific settings or libraries. More
-  # specifically, an Eigen3Config.cmake generated from a 64 bit target can be
-  # used for 32 bit targets as well (and vice versa).
-  set (_Eigen3_CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P})
-  unset (CMAKE_SIZEOF_VOID_P)
-  write_basic_package_version_file (Eigen3ConfigVersion.cmake
-                                    VERSION ${EIGEN_VERSION_NUMBER}
-                                    COMPATIBILITY SameMajorVersion)
-  set (CMAKE_SIZEOF_VOID_P ${_Eigen3_CMAKE_SIZEOF_VOID_P})
-
-  # The Eigen target will be located in the Eigen3 namespace. Other CMake
-  # targets can refer to it using Eigen3::Eigen.
-  export (TARGETS eigen NAMESPACE Eigen3:: FILE Eigen3Targets.cmake)
-  # Export Eigen3 package to CMake registry such that it can be easily found by
-  # CMake even if it has not been installed to a standard directory.
-  export (PACKAGE Eigen3)
-
-  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 ()
+include (CMakePackageConfigHelpers)
+
+# Imported target support
+add_library (eigen INTERFACE)
+add_library (Eigen3::Eigen ALIAS eigen)
+target_compile_definitions (eigen INTERFACE ${EIGEN_DEFINITIONS})
+target_include_directories (eigen INTERFACE
+  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+  $<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>
+)
+
+# Export as title case Eigen
+set_target_properties (eigen PROPERTIES EXPORT_NAME Eigen)
+
+install (TARGETS eigen EXPORT Eigen3Targets)
+
+configure_package_config_file (
+  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Eigen3Config.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
+)
+# Remove CMAKE_SIZEOF_VOID_P from Eigen3ConfigVersion.cmake since Eigen does
+# not depend on architecture specific settings or libraries. More
+# specifically, an Eigen3Config.cmake generated from a 64 bit target can be
+# used for 32 bit targets as well (and vice versa).
+set (_Eigen3_CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P})
+unset (CMAKE_SIZEOF_VOID_P)
+write_basic_package_version_file (Eigen3ConfigVersion.cmake
+                                  VERSION ${EIGEN_VERSION_NUMBER}
+                                  COMPATIBILITY SameMajorVersion)
+set (CMAKE_SIZEOF_VOID_P ${_Eigen3_CMAKE_SIZEOF_VOID_P})
+
+# The Eigen target will be located in the Eigen3 namespace. Other CMake
+# targets can refer to it using Eigen3::Eigen.
+export (TARGETS eigen NAMESPACE Eigen3:: FILE Eigen3Targets.cmake)
+# Export Eigen3 package to CMake registry such that it can be easily found by
+# CMake even if it has not been installed to a standard directory.
+export (PACKAGE Eigen3)
+
+install (EXPORT Eigen3Targets NAMESPACE Eigen3:: DESTINATION ${CMAKEPACKAGE_INSTALL_DIR})
 
 install ( FILES ${CMAKE_CURRENT_SOURCE_DIR}/cmake/UseEigen3.cmake
                 ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
diff --git a/lapack/CMakeLists.txt b/lapack/CMakeLists.txt
index 0c50d5cd8..a85115b03 100644
--- a/lapack/CMakeLists.txt
+++ b/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}
diff --git a/unsupported/test/CMakeLists.txt b/unsupported/test/CMakeLists.txt
index cea4bbe69..6bbcf50d5 100644
--- a/unsupported/test/CMakeLists.txt
+++ b/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")