fix clang 12/13 c++17 mode

Hana Dusíková · Hana Dusíková · commit ecd2e3a7ba63 · 2022-01-13T09:56:40.000+01:00
diff --git a/include/ctll/utilities.hpp b/include/ctll/utilities.hpp
@@ -11,7 +11,9 @@
     #elif __cpp_nontype_template_args >= 201411L
         #if defined __clang_major__ && __clang_major__ >= 12
             #if !defined __apple_build_version__ || !__apple_build_version__
-                #define CTLL_CNTTP_COMPILER_CHECK 1
+                #if __cplusplus > 201703L
+                    #define CTLL_CNTTP_COMPILER_CHECK 1
+                #endif
             #endif
         #endif
     #endif
diff --git a/single-header/ctre-unicode.hpp b/single-header/ctre-unicode.hpp
@@ -462,7 +462,9 @@ template <size_t N> fixed_string(fixed_string<N>) -> fixed_string<N>;
     #elif __cpp_nontype_template_args >= 201411L
         #if defined __clang_major__ && __clang_major__ >= 12
             #if !defined __apple_build_version__ || !__apple_build_version__
-                #define CTLL_CNTTP_COMPILER_CHECK 1
+                #if __cplusplus > 201703L
+                    #define CTLL_CNTTP_COMPILER_CHECK 1
+                #endif
             #endif
         #endif
     #endif
diff --git a/single-header/ctre.hpp b/single-header/ctre.hpp
@@ -459,7 +459,9 @@ template <size_t N> fixed_string(fixed_string<N>) -> fixed_string<N>;
     #elif __cpp_nontype_template_args >= 201411L
         #if defined __clang_major__ && __clang_major__ >= 12
             #if !defined __apple_build_version__ || !__apple_build_version__
-                #define CTLL_CNTTP_COMPILER_CHECK 1
+                #if __cplusplus > 201703L
+                    #define CTLL_CNTTP_COMPILER_CHECK 1
+                #endif
             #endif
         #endif
     #endif
