Error in LwIP. implicit declaration of function 'gethostbyname'; did you mean 'getsockname'?

Hi,

I tried to port the X-CUBE-IOTA1 Lib to the STM32F7-Disco.

So i startet with a void Project added the Cube Iota files and enabled the LwIP Module.

But in the http_manager.c file all gethostbyname calls throw the above error.

I don't understand how the compiler can't find the function.

All Files should be included correctly.

Do i have to change some LwIP Settings?

I know that may be a dump question, but i can't find the error.

If you need some Code let me know.

Thanks for your Help,

Kevin