Error compiling master branch lwip in arduino core ESP8266

[buitre-buitaker]

Hi!

Trying yo apply changes in lwip library but I get an error (original error message in Spanish):

No se esperaba v6 en este momento. ---> Don´t wait V6 in this moment.

PS C:\Users\XXXXXX\Documents\Arduino\hardware\esp8266com\esp8266\tools\sdk\lwip2> make install git submodule update --init --recursive builder
make -C builder -f Makefile.arduino install
make[1]: Entering directory 'C:/Users/XXXXX/Documents/Arduino/hardware/esp8266com/esp8266/tools/sdk/lwip2/builder'
for v6 in 0 1; do
for mss in 536 1460; do
for feat in 0 1; do
test ( $feat = 0 ) -a ( $v6 = 1 ) && continue;
featname= ;
test $feat = 1 && featname=-feat ;
make -f makefiles/Makefile.build-lwip2
target=arduino
DEFINE_TARGET=ARDUINO
SDK=../..
LWIP_ESP=glue-esp/lwip-1.4-arduino/include
LWIP_LIB=liblwip$((2+4v6))-$mss$featname.a
LWIP_LIB_RELEASE=../../lib/liblwip$((2+4v6))-$mss$featname.a
LWIP_INCLUDES_RELEASE=../include
TOOLS=C:/Users/XXXXXXX/Documents/Arduino/hardware/esp8266com/esp8266/tools/xtensa-lx106-elf/bin/xtensa-lx106-elf-
TCP_MSS=$mss LWIP_FEATURES=$feat LWIP_IPV6=$v6
BUILD=build-$mss$featname-v$((4+2*v6))
install ;
done; done; done
No se esperaba v6 en este momento.
Makefile.arduino:4: recipe for target 'install' failed
make[1]: *** [install] Error 255
make[1]: Leaving directory 'C:/Users/XXXXX/Documents/Arduino/hardware/esp8266com/esp8266/tools/sdk/lwip2/builder'
Makefile:3: recipe for target 'install' failed
make: *** [install] Error 2

[d-a-v]

One hardly understands to which line of the Makefile this "v6" error refers to.
This script is currently working with Linux.
You are running windows, did you try to use WSL2 ?

[buitre-buitaker]

I have in mind this option. I wil try.

Thank you!

[d-a-v]

Any update ?