llvm/test/LLVMC/ExternOptions.td

// Check that extern options work.
// The dummy tool and graph are required to silence warnings.
// RUN: tblgen -I %p/../../include --gen-llvmc %s -o %t
// RUN: FileCheck -input-file %t %s
// RUN: %compile_cxx -fexceptions -x c++ %t

include "llvm/CompilerDriver/Common.td"

// CHECK: extern cl::opt<bool> AutoGeneratedSwitch_Wall

def OptList : OptionList<[(switch_option "Wall", (extern)),
                          (parameter_option "std", (extern)),
                          (prefix_list_option "L", (extern))]>;

def dummy_tool : Tool<[
(cmd_line "dummy_cmd $INFILE"),
(in_language "dummy"),
(out_language "dummy"),
(actions (case
         (switch_on "Wall"), (stop_compilation),
         (not_empty "std"), (stop_compilation),
         (not_empty "L"), (stop_compilation)))
]>;

def DummyGraph : CompilationGraph<[SimpleEdge<"root", "dummy_tool">]>;