removed autconfig and adjusted dpp for formatters without it

.gitignore

@@ -12,7 +12,6 @@ buildtools/composer.phar
 src/build
 cmake-build-debug
 docpages/example_code/build
-*autoconfig.h
 
 # tests
 test

CMakeLists.txt

@@ -25,6 +25,7 @@ option(DPP_INSTALL "Generate the install target" ON)
 option(DPP_BUILD_TEST "Build the test program" ON)
 option(DPP_NO_VCPKG "No VCPKG" OFF)
 option(DPP_CORO "Experimental support for C++20 coroutines" OFF)
+option(DPP_FORMATTERS "Support for C++20 formatters" OFF)
 option(DPP_USE_EXTERNAL_JSON "Use an external installation of nlohmann::json" OFF)
 option(DPP_USE_PCH "Use precompiled headers to speed up compilation" OFF)
 option(AVX_TYPE "Force AVX type for speeding up audio mixing" OFF)
@@ -115,53 +116,3 @@ else()
 	# that made no sense, it seems they may have changed their parsing rules somehow.
 	message("-- Using bundled nlohmann::json")
 endif()
-
-if(CMAKE_CXX_STANDARD GREATER_EQUAL 20 OR DPP_CORO)
-	include(CheckCXXSourceCompiles)
-	unset(HAS_FORMAT CACHE)
-	set(temp_flags "${CMAKE_REQUIRED_FLAGS}")
-	if (MSVC)
-		set(CMAKE_REQUIRED_FLAGS "/std:c++20")
-	else ()
-		set(CMAKE_REQUIRED_FLAGS "-std=c++20")
-	endif ()
-	check_cxx_source_compiles(
-		"
-		#include <format>
-		#include <string>
-
-		struct MyType {
-		int value;
-		std::string str() const { return std::to_string(value); }
-		};
-
-		template <>
-		struct std::formatter<MyType> : std::formatter<std::string> {
-		auto format(const MyType& item, std::format_context& ctx) const -> decltype(ctx.out()) {
-		  return std::format_to(ctx.out(), \"{}\", item.str());
-		}
-		};
-
-		int main() {
-		MyType my{42};
-		auto s = std::format(\"{}\", my);
-		return 0;
-		}
-		"
-		HAS_FORMAT
-
-	)
-	set(CMAKE_REQUIRED_FLAGS ${temp_flags})
-	if(HAS_FORMAT)
-		message("-- INFO: Found std::format support")
-		set(DPP_HAS_FORMAT 1)
-	else ()
-		message("-- INFO: std::format support not found")
-	endif()
-endif ()
-
-configure_file(
-		${CMAKE_CURRENT_SOURCE_DIR}/include/dpp/autoconfig.h.in
-		${CMAKE_CURRENT_SOURCE_DIR}/include/dpp/autoconfig.h
-		@ONLY
-)

include/dpp/snowflake.h

@@ -23,11 +23,10 @@
 #include <dpp/export.h>
 #include <dpp/json_fwd.h>
 #include <dpp/exception.h>
-#include <dpp/autoconfig.h>
 #include <cstdint>
 #include <type_traits>
 
-#ifdef DPP_HAS_FORMAT
+#ifdef DPP_FORMATTERS
 #include <format>
 #endif
 
@@ -287,7 +286,7 @@ struct std::hash<dpp::snowflake>
 	}
 };
 
-#ifdef DPP_HAS_FORMAT
+#ifdef DPP_FORMATTERS
 /*
  * @brief implementation of formater for dpp::snowflake for std::format support
  * https://en.cppreference.com/w/cpp/utility/format/formatter
@@ -305,4 +304,4 @@ struct std::formatter<dpp::snowflake>
                 return std::format_to(ctx.out(), "{}", snowflake.str());
         }
 };
-#endif //DPP_HAS_FORMAT
+#endif //DPP_FORMATTERS

library/CMakeLists.txt

@@ -341,6 +341,10 @@ if(DPP_CORO)
 					COMMAND php buildtools/make_struct.php "\\Dpp\\Generator\\CoroGenerator")
 endif()
 
+if(DPP_FORMATTERS)
+	target_compile_definitions(dpp PUBLIC DPP_FORMATTERS)
+endif()
+
 if (DPP_BUILD_TEST)
 	enable_testing(${CMAKE_CURRENT_SOURCE_DIR}/..)
 	file(GLOB testnamelist "${CMAKE_CURRENT_SOURCE_DIR}/../src/*")
@@ -351,7 +355,7 @@ if (DPP_BUILD_TEST)
 			set (testsrc "")
 			file(GLOB testsrc "${modules_dir}/${testname}/*.cpp")
 			add_executable(${testname} ${testsrc})
-			if (DPP_CORO)
+			if (DPP_CORO OR DPP_FORMATTERS)
 				target_compile_features(${testname} PRIVATE cxx_std_20)
 			else()
 				target_compile_features(${testname} PRIVATE cxx_std_17)

src/unittest/test.cpp

@@ -381,15 +381,15 @@ Markdown lol \\|\\|spoiler\\|\\| \\~\\~strikethrough\\~\\~ \\`small \\*code\\* b
 
         { // test snowflake: std::format support
 
-                #ifdef DPP_HAS_FORMAT
+                #ifdef DPP_FORMATTERS
                         set_test(SNOWFLAKE_STD_FORMAT,
                             std::format("{}",dpp::snowflake{}) == "0" &&
                             std::format("{}",dpp::snowflake{12345}) == "12345" &&
                             std::format("{} hello {}", dpp::snowflake{12345}, dpp::snowflake{54321}) == "12345 hello 54321"
                         );
                 #else
                         set_status(SNOWFLAKE_STD_FORMAT,ts_skipped);
-                #endif // DPP_HAS_FORMAT
+                #endif // DPP_FORMATTERS
         };
 
 	{ // test dpp::json_interface