pytorch

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#include <c10/macros/Macros.h>
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#ifdef C10_USE_GFLAGS
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#include <c10/util/Flags.h>
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#include <string>
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namespace c10 {
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using std::string;
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C10_EXPORT void SetUsageMessage(const string& str) {
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  if (UsageMessage() != nullptr) {
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    // Usage message has already been set, so we will simply return.
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    return;
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  }
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  gflags::SetUsageMessage(str);
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}
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C10_EXPORT const char* UsageMessage() {
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  return gflags::ProgramUsage();
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}
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C10_EXPORT bool ParseCommandLineFlags(int* pargc, char*** pargv) {
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  // In case there is no commandline flags to parse, simply return.
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  if (*pargc == 0)
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    return true;
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  return gflags::ParseCommandLineFlags(pargc, pargv, true);
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}
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C10_EXPORT bool CommandLineFlagsHasBeenParsed() {
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  // There is no way we query gflags right now, so we will simply return true.
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  return true;
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}
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} // namespace c10
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#endif // C10_USE_GFLAGS
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