cmake: use local FindOpenMP for CMake < 3.26.0

Author: jcarpent

CMakeLists.txt

@@ -48,18 +48,12 @@ project(${PROJECT_NAME} ${PROJECT_ARGS})
 
 include(${CMAKE_CURRENT_LIST_DIR}/cmake-module/ide.cmake)
 include(${CMAKE_CURRENT_LIST_DIR}/cmake-module/apple.cmake)
-if(APPLE OR WIN32) # Use the handmade approach
+
+if(NOT ${CMAKE_VERSION} VERSION_GREATER "3.26.0")
   set(CMAKE_MODULE_PATH
       ${CMAKE_CURRENT_LIST_DIR}/cmake-module/find-external/OpenMP
       ${CMAKE_MODULE_PATH})
-elseif(UNIX)
-  if(${CMAKE_VERSION} VERSION_GREATER "3.20.0" OR ${CMAKE_VERSION}
-                                                  VERSION_EQUAL "3.20.0")
-    set(CMAKE_MODULE_PATH
-        ${CMAKE_CURRENT_LIST_DIR}/cmake-module/find-external/OpenMP
-        ${CMAKE_MODULE_PATH})
-  endif()
-endif(APPLE OR WIN32)
+endif()
 include(${CMAKE_CURRENT_LIST_DIR}/cmake-module/julia.cmake)
 include(CMakeDependentOption)