Bump cmake_minimum_required version to 3.5

Author: Tessil

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.5)
 include(GNUInstallDirs)
 
 
@@ -21,47 +21,44 @@ target_sources(array_hash INTERFACE "$<BUILD_INTERFACE:${headers}>")
 
 
 
-# Installation (only compatible with CMake version >= 3.3)
-if(${CMAKE_VERSION} VERSION_GREATER "3.2")
-    include(CMakePackageConfigHelpers)
+include(CMakePackageConfigHelpers)
 
-    ## Install include directory
-    install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/tsl"
-            DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+## Install include directory
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/tsl"
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
 
 
 
-    ## Create and install tsl-array-hashConfig.cmake
-    configure_package_config_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake/tsl-array-hashConfig.cmake.in"
-                                  "${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfig.cmake"
-                                  INSTALL_DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")
+## Create and install tsl-array-hashConfig.cmake
+configure_package_config_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake/tsl-array-hashConfig.cmake.in"
+                                "${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfig.cmake"
+                                INSTALL_DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")
 
-    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfig.cmake"
-            DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfig.cmake"
+        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")
 
 
 
-    ## Create and install tsl-array-hashTargets.cmake
-    install(TARGETS array_hash
-            EXPORT tsl-array-hashTargets)
+## Create and install tsl-array-hashTargets.cmake
+install(TARGETS array_hash
+        EXPORT tsl-array-hashTargets)
 
-    install(EXPORT tsl-array-hashTargets
-            NAMESPACE tsl::
-            DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")
+install(EXPORT tsl-array-hashTargets
+        NAMESPACE tsl::
+        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")
 
 
 
-    ## Create and install tsl-array-hashConfigVersion.cmake
-    # tsl-array-hash is header-only and does not depend on the architecture.
-    # Remove CMAKE_SIZEOF_VOID_P from tsl-array-hashConfigVersion.cmake so that a
-    # tsl-array-hashConfig.cmake generated for a 64 bit target can be used for 32 bit
-    # targets and vice versa.
-    set(CMAKE_SIZEOF_VOID_P_BACKUP ${CMAKE_SIZEOF_VOID_P})
-    unset(CMAKE_SIZEOF_VOID_P)
-    write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfigVersion.cmake"
-                                     COMPATIBILITY SameMajorVersion)
-    set(CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P_BACKUP})
+## Create and install tsl-array-hashConfigVersion.cmake
+# tsl-array-hash is header-only and does not depend on the architecture.
+# Remove CMAKE_SIZEOF_VOID_P from tsl-array-hashConfigVersion.cmake so that a
+# tsl-array-hashConfig.cmake generated for a 64 bit target can be used for 32 bit
+# targets and vice versa.
+set(CMAKE_SIZEOF_VOID_P_BACKUP ${CMAKE_SIZEOF_VOID_P})
+unset(CMAKE_SIZEOF_VOID_P)
+write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfigVersion.cmake"
+                                COMPATIBILITY SameMajorVersion)
+set(CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P_BACKUP})
 
-    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfigVersion.cmake"
-            DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")
-endif()
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-array-hashConfigVersion.cmake"
+        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-array-hash")