CMakeFindFrameworks: Search CMAKE_FRAMEWORK_PATH

Modules/CMakeFindFrameworks.cmake

@@ -17,13 +17,25 @@ if(NOT CMAKE_FIND_FRAMEWORKS_INCLUDED)
   macro(CMAKE_FIND_FRAMEWORKS fwk)
     set(${fwk}_FRAMEWORKS)
     if(APPLE)
-      foreach(dir
-          ~/Library/Frameworks/${fwk}.framework
-          /usr/local/Frameworks/${fwk}.framework
-          /Library/Frameworks/${fwk}.framework
-          /System/Library/Frameworks/${fwk}.framework
-          /Network/Library/Frameworks/${fwk}.framework
-          ${CMAKE_FIND_FRAMEWORK_EXTRA_LOCATIONS})
+      file(TO_CMAKE_PATH "$ENV{CMAKE_FRAMEWORK_PATH}" _cmff_CMAKE_FRAMEWORK_PATH)
+      set(_cmff_search_paths
+            ${CMAKE_FRAMEWORK_PATH}
+            ${_cmff_CMAKE_FRAMEWORK_PATH}
+            ~/Library/Frameworks
+            /usr/local/Frameworks
+            /Library/Frameworks
+            /System/Library/Frameworks
+            /Network/Library/Frameworks
+            ${CMAKE_SYSTEM_FRAMEWORK_PATH})
+
+      # For backwards compatibility reasons,
+      # CMAKE_FIND_FRAMEWORK_EXTRA_LOCATIONS includes ${fwk}.framework
+      list(TRANSFORM _cmff_search_paths APPEND /${fwk}.framework)
+      list(APPEND _cmff_search_paths ${CMAKE_FIND_FRAMEWORK_EXTRA_LOCATIONS})
+
+      list(REMOVE_DUPLICATES _cmff_search_paths)
+
+      foreach(dir IN LISTS _cmff_search_paths)
         if(EXISTS ${dir})
           set(${fwk}_FRAMEWORKS ${${fwk}_FRAMEWORKS} ${dir})
         endif()