external/frozen/defines_h_constexpr_string.patch.0

   1 --- include/frozen/bits/defines.h
   2 +++ include/frozen/bits/defines.h
   3 @@ -59,7 +59,7 @@
   4    #define FROZEN_LETITGO_HAS_DEDUCTION_GUIDES
   5  #endif
   6
   7 -#if __cpp_lib_constexpr_string >= 201907L
   8 +#if defined(__cpp_lib_constexpr_string) && __cpp_lib_constexpr_string >= 201907L
   9    #define FROZEN_LETITGO_HAS_CONSTEXPR_STRING
  10  #endif
  11