Merge pull request #1 from imbeacon/master

Added std::function support for non ESP boards.
thingsboard · Feb 21, 2023 · 0a6ee1e · 0a6ee1e
2 parents 2d228f2 + e49f361
commit 0a6ee1e
Showing 1 changed file with 10 additions and 6 deletions.
diff --git a/src/PubSubClient.h b/src/PubSubClient.h
@@ -76,12 +76,16 @@
 // Maximum size of fixed header and variable length size header
 #define MQTT_MAX_HEADER_SIZE 5
 
-#if defined(ESP8266) || defined(ESP32)
-#include <functional>
-#define MQTT_CALLBACK_SIGNATURE std::function<void(char*, uint8_t*, unsigned int)> callback
-#else
-#define MQTT_CALLBACK_SIGNATURE void (*callback)(char*, uint8_t*, unsigned int)
-#endif
+#  ifdef __has_include
+#    if __has_include(<functional>)
+#      include <functional>
+#      define MQTT_CALLBACK_SIGNATURE std::function<void(char*, uint8_t*, unsigned int)> callback
+#    else
+#      define MQTT_CALLBACK_SIGNATURE void (*callback)(char*, uint8_t*, unsigned int)
+#    endif
+#  else
+#    define MQTT_CALLBACK_SIGNATURE void (*callback)(char*, uint8_t*, unsigned int)
+#  endif
 
 #define CHECK_STRING_LENGTH(l,s) if (l+2+strnlen(s, this->bufferSize) > this->bufferSize) {_client->stop();return false;}