Tests: Fix FindOpenAL test for macOS framework

- Use framework-style includes.
- Hush deprecation warnings when compiling test.

Tests/FindOpenAL/Test/CMakeLists.txt

@@ -12,3 +12,9 @@ add_executable(test_var main.cxx)
 target_include_directories(test_var PRIVATE ${OPENAL_INCLUDE_DIR})
 target_link_libraries(test_var PRIVATE ${OPENAL_LIBRARY})
 add_test(NAME test_var COMMAND test_var)
+
+# OpenAL has been deprecated on macOS since Catalina (10.15)
+if(APPLE)
+  target_compile_options(test_tgt PRIVATE "-Wno-deprecated-declarations")
+  target_compile_options(test_var PRIVATE "-Wno-deprecated-declarations")
+endif()

Tests/FindOpenAL/Test/main.cxx

@@ -1,5 +1,10 @@
-#include <AL/al.h>
-#include <AL/alc.h>
+#ifdef __APPLE__
+#  include "OpenAL/al.h"
+#  include "OpenAL/alc.h"
+#else
+#  include <AL/al.h>
+#  include <AL/alc.h>
+#endif
 #include <stdio.h>
 
 int main()