Prefer config mode for finding OpenAL

CMakeLists.txt

@@ -98,6 +98,7 @@ if(WIN32)
 endif()
 
 set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_FIND_PACKAGE_PREFER_CONFIG ON)
 
 # Optional features
 #

src/CMakeLists.txt

@@ -89,8 +89,12 @@ endif()
 
 if(OPENAL)
     find_package(OpenAL REQUIRED)
+    if(TARGET OpenAL::OpenAL)
+        target_link_libraries(86Box OpenAL::OpenAL)
+    else()
         include_directories(${OPENAL_INCLUDE_DIR})
         target_link_libraries(86Box ${OPENAL_LIBRARY})
+    endif()
 endif()
 
 find_package(SDL2 REQUIRED)