AS_IF([test "$ac_cv_safe_to_use_Wredundant_decls_" = "yes"],
[CXX_WARNINGS="${CXX_WARNINGS} -Wredundant-decls"],
[CXX_WARNINGS="${CXX_WARNINGS} -Wno-redundant-decls"])
AS_IF([test "$ac_cv_safe_to_use_Wredundant_decls_" = "yes"],
[CXX_WARNINGS="${CXX_WARNINGS} -Wredundant-decls"],
[CXX_WARNINGS="${CXX_WARNINGS} -Wno-redundant-decls"])