Can't compile firmware anymore: 'nullptr' was not declared in this scope  

Can't compile firmware anymore: 'nullptr' was not declared in this scope

Trying to compile new firmware 3.5
I'm getting this compile error: 'nullptr' was not declared in this scope
I'm using all prusa steps and my gcc version shows version 4.8.1.
Also i checked plantform file and gnu11 is present since nullptr is a c++11 feature.

Then i also tried with latest arduino 1.8.7 and i get same error.

Anyone have this problem too?

Complete log:

Aviso: platform.txt do núcleo «Marlin AVR Boards» contém recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}" deprecados, convertidos automaticamente para recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}". Considere actualizar este núcleo.
In file included from sketch\ConfigurationStore.cpp:6:0:

ultralcd.h:160: error: 'nullptr' was not declared in this scope

uint8_t choose_menu_P(const char *header, const char *item, const char *last_item = nullptr);

^

ConfigurationStore.cpp:171: error: expected constructor, destructor, or type conversion before '(' token

static_assert (EXTRUDERS == 1, "ConfigurationStore M500_conf not implemented for more extruders, fix filament_size array size.");

^

ConfigurationStore.cpp:172: error: expected constructor, destructor, or type conversion before '(' token

static_assert (NUM_AXIS == 4, "ConfigurationStore M500_conf not implemented for more axis."

^

ConfigurationStore.cpp:180: error: expected constructor, destructor, or type conversion before '(' token

static_assert (sizeof(M500_conf) == 188, "sizeof(M500_conf) has changed, ensure that EEPROM_VERSION has been incremented, "

^

exit status 1
'nullptr' was not declared in this scope