project('static library test', 'c')

lib = static_library('mylib', get_option('source'),
  link_args : '-THISMUSTNOBEUSED') # Static linker needs to ignore all link args.

has_not_changed = false
if is_disabler(lib)
    has_not_changed = true
else
    has_not_changed = true
endif
assert(has_not_changed, 'Static library has changed.')

assert(not is_disabler(lib), 'Static library is a disabler.')