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crosstool-NG with support for Xtensa

CrossTool-NG

For a manual on how to install crosstool see our wiki https://github.com/esp8266/esp8266-wiki/wiki/Compiler

Online community http://www.esp8266.com supporting all aspects of the ESP8266 and ESP8266EX

For more info see our wiki https://github.com/esp8266/esp8266-wiki/wiki