test fmt-10.1.1 and spedlog v1.12.0 - ok

platformio.ini

@@ -12,7 +12,9 @@ platform = https://github.com/Jason2866/platform-espressif32.git#Arduino/IDF5
 framework = arduino
 
 build_flags =
-	-DFMT_HEADER_ONLY
+	-DTEST_SPDLOG
+	; -std=c++20
+	; -DFMT_HEADER_ONLY
 	-DBOARD_HAS_PSRAM
 	-DEMBEDDED  ; for fmtlib
 	-DSPDLOG_COMPILED_LIB ; for spdlog
@@ -38,5 +40,5 @@ debug_speed = 40000
 lib_deps = 
 	https://github.com/mhaberler/M5GFX.git#arduino-3.0
 	m5stack/M5Unified@^0.1.10
-	https://github.com/mhaberler/fmtlib#mah-10.0.0
-	/home/mah/src/spdlog
+	https://github.com/mhaberler/fmtlib#mah-10.1.1
+	https://github.com/gabime/spdlog#v1.12.0

src/main.cpp

@@ -2,6 +2,7 @@
 #undef B1 // fmt workaround
 #undef F
 #include <fmt/core.h>
+#ifdef TEST_SPDLOG
 
 #include <array>
 #include <numeric>
@@ -11,6 +12,7 @@
 #include "spdlog/fmt/bin_to_hex.h"
 
 auto main_log = spdlog::stdout_color_mt("main", spdlog::color_mode::always);
+#endif
 
 M5GFX display;
 
@@ -36,7 +38,7 @@ void setup(void)
   M5.begin(cfg);
 
   std::string s = fmt::format("The answer is {}.", 42);
-
+#ifdef TEST_SPDLOG
   spdlog::set_level(spdlog::level::trace); // Set global log level to trace
   spdlog::set_pattern("[%t] [%C-%m-%d %H:%M:%S.%e] [%n] [%^%l%$] %v");
 
@@ -51,7 +53,7 @@ void setup(void)
   std::array<char, 64> a;
   std::iota(a.begin(), a.end(), 1);
   main_log->critical("{:s:X}", spdlog::to_hex(a));
-
+#endif
   display.init();
   display.startWrite();
   display.fillScreen(TFT_BLACK);