compilation error

[poaongithub]

hi, @donny681, I got compilation error after clone your code and install "idf.py", how to solve it?
Any help appreciated, thanks in advance.

/home/bo/ESP32_CAMERA_QR/main/app_main.c:54:8: error: unknown type name 'esp_ip4_addr_t'
static esp_ip4_addr_t s_ip_addr;
^~~~~~~~~~~~~~
In file included from /home/bo/projects/esp/esp-idf/components/lwip/lwip/src/include/lwip/ip_addr.h:43,
from /home/bo/projects/esp/esp-idf/components/tcpip_adapter/include/tcpip_adapter.h:24,
from /home/bo/projects/esp/esp-idf/components/esp_event/include/esp_event_legacy.h:22,
from /home/bo/projects/esp/esp-idf/components/esp_event/include/esp_event.h:26,
from /home/bo/projects/esp/esp-idf/components/esp_wifi/include/esp_wifi.h:64,
from /home/bo/ESP32_CAMERA_QR/main/app_main.c:27:
/home/bo/ESP32_CAMERA_QR/main/app_main.c: In function 'app_main':
/home/bo/projects/esp/esp-idf/components/lwip/lwip/src/include/lwip/ip4_addr.h:176:65: error: request for member 'addr' in something not a structure or union
#define ip4_addr_get_byte(ipaddr, idx) (((const u8_t*)(&(ipaddr)->addr))[idx])
^

[ArkYk]

I'm not sure,maybe you can watch follow url.
https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/network/tcpip_adapter_migration.html#updating-network-connection-code

[shun-dgut]

main/app_main.c 修改为下面这样应该就可以了
//static esp_ip4_addr_t s_ip_addr;
static ip4_addr_t s_ip_addr;