Compillation error with the git esp8266 Core 2.5.0-dev

[jgrulich]

When used the last ESP git core 2.5.0-dev, the following build error appears:

libraries\WiFiManager-master\WiFiManager.cpp.o: In function `WiFiManager::waitForConnectResult()':

D:\arduino-1.8.5\projects\libraries\WiFiManager-master/WiFiManager.cpp:759: undefined reference to `WPS_is_unavailable_in_this_configuration__Please_check_FAQ_or_board_generator_tool'

libraries\WiFiManager-master\WiFiManager.cpp.o: In function `String::operator+=(__FlashStringHelper const*)':

D:\arduino-1.8.5\projects\libraries\WiFiManager-master/WiFiManager.cpp:759: undefined reference to `WPS_is_unavailable_in_this_configuration__Please_check_FAQ_or_board_generator_tool'

collect2.exe: error: ld returned 1 exit status

[tablatronix]

#645

[tablatronix]

704a7ae