Resolve "Refactoring WOLF installation system"

Closes #451 (closed)

test/gtest/CMakeLists.txt

@@ -69,6 +69,12 @@ endif()
   
 function(wolf_add_gtest target)
   add_executable(${target} ${ARGN})
-  target_link_libraries(${target} PUBLIC gtest_main)
+  if(${CMAKE_VERSION} VERSION_LESS "3.11.0") 
+    add_dependencies(${target} libgtest)
+    target_link_libraries(${target} libgtest)
+    target_include_directories(${target} ${GTEST_INCLUDE_DIRS})
+  else()
+    target_link_libraries(${target} PUBLIC gtest_main)
+  endif()
   add_test(NAME ${target} COMMAND ${target})
 endfunction()