Compilation error: 'function' in namespace 'std' does not name a template type

[duccio]

Compilation error: 'function' in namespace 'std' does not name a template type

[dersimn]

The library works only on ESP8266 for now. Depending on how often you send messages a regular AVR based Arduino might be too slow anyways.

The problem why it doesn't compile now is because of this line. Here is how it should look like (not copy&paste, but just to get an impression). I don't have an Arduino Ethernet or similar to test though, since I'm only using ESP8266 when I need a network attached micro-controller.

[duccio]

Yeah, thanks for the reply @dersimn. I was looking for ArduinoPubSubClientTools thanks to another OS project, ArduinoUnifiedLog. I'm interested in Serial Logging (and MQTT in the future, but without the ESP8266) and I was unable to compile on Arduino because the Arduino toolkit try to compile all files in ArduinoUnifiedLog (also the MQTT one, that depends on ArduinoPubSubClientTools). I opened an issue on ArduinoUnifiedLog (dersimn/ArduinoUnifiedLog#1) and I'm trying to discover how to avoid all files compilation on Arduino 😉