cmake: add "-Wno-error=unused-function" for tests
+# Disable error when functions are unused. This allows commenting out calls to
+# `tcase_add_test()` to skip running certain tests during a debug session.
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error=unused-function")
+
include_directories(
${CMAKE_CURRENT_SOURCE_DIR}/../../src/gst-plugins
${gstreamer-1.5_INCLUDE_DIRS}
