fggl/audio/fallback/CMakeLists.txt

+target_sources(fggl
+    PRIVATE
+        audio.cpp
+)

fggl/audio/openal/CMakeLists.txt

+find_package(OpenAL CONFIG)
+if (NOT OpenAL_FOUND)
+    # ubuntu/debian openal-soft package doesn't seem to have a config file
+    # it's probably falling back to findOpenAL.cmake
+    message(STATUS "OpenAL-Soft config missing - falling back")
+    find_package(OpenAL REQUIRED)
+    target_link_libraries(fggl PUBLIC ${OPENAL_LIBRARY})
+    target_include_directories(fggl PUBLIC ${OPENAL_INCLUDE_DIR})
+else ()
+    # we're using target-based
+    message(STATUS "Using OpenAL-Soft config file")
+    if (TARGET OpenAL::OpenAL)
+        target_link_libraries(fggl PUBLIC OpenAL::OpenAL)
+    else ()
+        target_link_libraries(fggl PUBLIC OpenAL)
+    endif ()
+
+endif ()
+
+target_sources(fggl
+    PRIVATE
+        audio.cpp
+        module.cpp
+)
+