Compilation errors in latest version

[avbalen]

After cloning the latest version (including pycom-esp-idf) on OS X I get the following compilation error:
/Users/avb/Work/Pycom/pycom-esp-idf/components/soc/esp32/include/soc/io_mux_reg.h: In function 'PIN_PULLUP_DIS':
/Users/avb/Work/Pycom/pycom-esp-idf/components/esp32/include/esp_assert.h:23:28: error: first argument to '__builtin_choose_expr' not a constant
_Static_assert(__builtin_choose_expr(__builtin_constant_p(CONDITION), (CONDITION), 1), #MSG);
... many similar messages to follow

This is for a LOPY on 868 MHz
As earlier versions compiled and worked correctly I think something is broken. Any suggestions how to fix this?

Tnx, Auke

[avbalen]

Followed yahia13's suggestion, see other thread, to install the newer toolchain. All errors automagically disappeared. Still wondering what the root cause was.