...
CC /opt/ESP/esp-open-rtos/lwip/lwip/src/apps/altcp_tls/altcp_tls_mbedtls.c
AR build/lwip.a
CC /opt/ESP/esp-open-rtos/core/esp_interrupts.c
CC /opt/ESP/esp-open-rtos/core/app_main.c
/opt/ESP/esp-open-rtos/core/app_main.c:31:29: fatal error: esplibs/libmain.h: No such file or directory
#include "esplibs/libmain.h"
^
compilation terminated.
../../core/component.mk:6: recipe for target 'build/core//app_main.o' failed
make: *** [build/core//app_main.o] Error 1
make: Leaving directory '/opt/ESP/esp-open-rtos/examples/blink'
don't know why it doesn't see esplibs/..
this is what 'make' returns