Em ~//.arduino15/packages/esp32/hardware/esp32/3.3.6#
add platform.local.txt
compiler.c.extra_flags=-fpermissive
compiler.cpp.extra_flags=-fpermissive
compiler.S.extra_flags=-fpermissive
compiler.c.elf.extra_flags=-fpermissive
compiler.ar.extra_flags=-fpermissive
compiler.objcopy.eep.extra_flags=-fpermissive
compiler.elf2hex.extra_flags=-fpermissive