if cdata.has('HAVE_SYS_TIMES_H') and cdata.has('HAVE_UNISTD_H')
  executable('adapter_test', 'adapter_test.c',
    install: false,
    dependencies : [gst_dep, gst_base_dep, gmodule_dep, mathlib],
    c_args: gst_c_args,
  )
endif