Recompile lwip libraries in Windows - Step by step

[vpapanik]

Install Git for windows (https://git-scm.com/download/win)

Install MinGW for windows (https://sourceforge.net/projects/mingw)

In MinGW installation manager, enable:

• mingw-developer-toolkit
• mingw32-base
• mingw32-gcc-g++
• msys-base

(not sure if all are necessary but just in case)

put C:\MinGW\bin in Windows PATH (check this https://www.rapidee.com)

reboot PC

rename C:\MinGW\bin\mingw32-make.exe to C:\MinGW\bin\make.exe

open bash terminal (just type bash in run)

(from now on assume that hardware files are in \Documents\Arduino\hardware\esp8266com\esp8266)

go to \tools\sdk\lwip2

optional: change lwip options in \tools\sdk\lwip2\builder\glue-lwip\arduino\lwipopts.h

(caution : NOT \tools\sdk\lwip2\include\lwipopts.h, this will be overwritten !)

type in bash: make install to build libraries in \esp8266com\esp8266\tools\sdk\lwip2\builder

type in bash: make clean to clean \esp8266com\esp8266\tools\sdk\lwip2\builder

finally copy new libraries to \esp8266com\esp8266\tools\sdk\lib

[mcspr]

Also note that https://github.com/d-a-v/esp82xx-nonos-linklayer has cmake support, see README-CMake.md there
Readme here could also use an update about the dependencies, at least for common systems