gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//openmp/CMakeLists.txt",
    "//openmp/cmake/modules/LibompCheckFortranFlag.cmake",
    "//openmp/cmake/modules/LibompHandleFlags.cmake",
    "//openmp/cmake/modules/LibompUtils.cmake",
    "//openmp/module/CMakeLists.txt",
    "//openmp/module/omp_lib.F90.var",
    "//openmp/module/omp_lib.h.var",
    "//openmp/runtime/CMakeLists.txt",
    "//openmp/runtime/cmake/LibompExports.cmake",
    "//openmp/runtime/cmake/config-ix.cmake",
    "//openmp/runtime/src/CMakeLists.txt"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}