compile error of smartconfig(2.5.0 dev)

[i3water]

Basic Infos

• This issue complies with the issue POLICY doc.
• I have read the documentation at readthedocs and the issue is not addressed there.
• I have tested that the issue is present in current master branch (aka latest git).
• I have searched the issue tracker for a similar issue.
• If there is a stack dump, I have decoded it.
• I have filled out all fields below.

Platform

• Hardware: [WiFiduino (ESP-12)]
• Core Version: 8b3f496
• Development Env: [Arduino IDE 1.8.8]
• Operating System: [Windows]

Settings in IDE

• Module: [WiFiduino]
• Flash Mode: [dio]
• Flash Size: [4MB-3MBSPIFFS]
• lwip Variant: [v2 Lower Memory]
• Reset Method: [ck|nodemcu]
• Flash Frequency: [40Mhz]
• CPU Frequency: [80Mhz]
• Upload Using: [SERIAL]
• Upload Speed: [115200] (serial upload only)

Problem Description

can not compile with smartconfig. latest three day, i had test with the latest git version every day, but all con`t compile.the package i download at 27 november can compile smartconfig codes.

MCVE Sketch

#include <ESP8266WiFi.h>
#define LED 2
 
void smartConfig()
{
  WiFi.mode(WIFI_STA);
  Serial.println("\r\nWait for Smartconfig");
  WiFi.beginSmartConfig();
  while (1)
  {
    Serial.print(".");
    digitalWrite(LED, 0);
    delay(500);
    digitalWrite(LED, 1);
    delay(500);
    if (WiFi.smartConfigDone())
    {
      Serial.println("SmartConfig Success");
      Serial.printf("SSID:%s\r\n", WiFi.SSID().c_str());
      Serial.printf("PSW:%s\r\n", WiFi.psk().c_str());
      break;
    }
  }
}
 
void setup()
{
  Serial.begin(115200);
  Serial.println("Start module");
  pinMode(LED, OUTPUT);
  digitalWrite(LED, 0);
  smartConfig();
}
 
void loop()
{
  delay(100);
  Serial.println("Start module");
}

Debug Messages

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_sniffer.o):(.text.smartconfig_stop+0x2c): undefined reference to `espconn_delete'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_sniffer.o):(.text.smartconfig_stop+0x61): undefined reference to `espconn_delete'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_sniffer.o): in function `smartconfig_stop':

(.text.smartconfig_stop+0x104): undefined reference to `espconn_delete'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Send_udp+0x8): undefined reference to `espconn_sent'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Send_udp+0x79): undefined reference to `espconn_sent'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Udp_send_cb+0x3a): undefined reference to `espconn_delete'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Answer+0x14): undefined reference to `espconn_port'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Answer+0x18): undefined reference to `espconn_regist_sentcb'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Answer+0x1c): undefined reference to `espconn_create'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Answer+0x7d): undefined reference to `espconn_port'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Answer+0xa8): undefined reference to `espconn_regist_sentcb'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_airkiss.o):(.text.KISS_Answer+0xb0): undefined reference to `espconn_create'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_esptouch.o):(.text.TOUCH_Send_platform+0x85): undefined reference to `espconn_sent'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_esptouch.o):(.text.TOUCH_udp_send_cb+0x6a): undefined reference to `espconn_delete'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_esptouch.o):(.text.TOUCH_Send_ACK+0x14): undefined reference to `espconn_regist_recvcb'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_esptouch.o):(.text.TOUCH_Send_ACK+0x52): undefined reference to `espconn_port'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_esptouch.o):(.text.TOUCH_Send_ACK+0x7d): undefined reference to `espconn_regist_sentcb'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_esptouch.o):(.text.TOUCH_Send_ACK+0x89): undefined reference to `espconn_regist_recvcb'

c:/users/12102/documents/arduino/hardware/esp8266/esp8266/tools/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: C:\Users\12102\Documents\Arduino\hardware\esp8266\esp8266/tools/sdk/lib\libsmartconfig.a(sc_esptouch.o):(.text.TOUCH_Send_ACK+0x92): undefined reference to `espconn_create'

collect2.exe: error: ld returned 1 exit status

[earlephilhower]

Looks to be defined in liblwip_gcc.a

~/Arduino/hardware/esp8266com/esp8266/tools/sdk/lib$ nm liblwip_gcc.a  | grep espconn_create
00000340 T espconn_create

[d-a-v]

#5444

[d-a-v]

Closed by #5444