gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Semantics/check-omp-structure.cpp",
    "//flang/test/Semantics/OpenMP/depend01.f90",
    "//lldb/include/lldb/Interpreter/OptionValueFileSpecList.h",
    "//lldb/include/lldb/Utility/FileSpec.h",
    "//lldb/source/Interpreter/OptionValueFileSpecList.cpp",
    "//lldb/source/Utility/FileSpec.cpp",
    "//lldb/test/API/commands/settings/TestSettings.py",
    "//lldb/tools/debugserver/source/MacOSX/MachException.cpp",
    "//lldb/tools/debugserver/source/MacOSX/MachException.h",
    "//llvm/utils/gn/secondary/bolt/lib/Passes/BUILD.gn",
    "//llvm/utils/gn/secondary/lldb/tools/lldb-dap/BUILD.gn"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}