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AC_TRY_COMPILE([#pragma GCC diagnostic ignored "-Wshadow"],[return 0;],
[AC_DEFINE(HAVE_DIAGNOSTIC_SHADOW,1,[define 1 if GCC supports -Wshadow])])
AC_TRY_COMPILE([#pragma GCC diagnostic ignored "-Wundef"],[return 0;],
[AC_DEFINE(HAVE_DIAGNOSTIC_UNDEF,1,[define 1 if GCC supports -Wundef])])
AC_TRY_COMPILE([#pragma GCC diagnostic ignored "-Wcast-qual"],[return 0;],
[AC_DEFINE(HAVE_DIAGNOSTIC_CAST_QUAL,1,[define 1 if GCC supports -Wcast-qual])])
AC_TRY_COMPILE([#pragma GCC diagnostic ignored "-Weffcpp"],[return 0;],
[AC_DEFINE(HAVE_DIAGNOSTIC_EFFCPP,1,[define 1 if GCC supports -Weffc++])])
AC_TRY_COMPILE([#pragma GCC diagnostic ignored "-Wsuggest-attribute=noreturn"],[return 0;],
[AC_DEFINE(HAVE_DIAGNOSTIC_SUGGEST_ATTRIBUTE,1,
[define 1 if GCC supports -Wsuggest-attribute=noreturn])])
AC_TRY_COMPILE([#pragma GCC diagnostic ignored "-Wdeprecated-register"],[return 0;],
[AC_DEFINE(HAVE_DIAGNOSTIC_DEPRECATED_REGISTER,1,
[define 1 if GCC supports -Wdeprecated-register])])
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