Could be temporarily fixed by changing uintptr_t to unsigned int * :
... GEN build.h CC bootblock/arch/x86/id.o CC bootblock/arch/x86/memcpy.o In file included from src/arch/x86/memcpy.c:5: src/include/asan.h:63:1: error: unknown type name 'uintptr_t'; did you mean 'wint_t'? uintptr_t __asan_shadow_offset(uintptr_t addr); ^~~~~~~~~ wint_t src/include/asan.h:63:32: error: unknown type name 'uintptr_t'; did you mean 'wint_t'? uintptr_t __asan_shadow_offset(uintptr_t addr); ^~~~~~~~~ wint_t cc1: error: unrecognized command line option '-Wno-address-of-packed-member' [-Werror] cc1: all warnings being treated as errors make: *** [Makefile:362: build/bootblock/arch/x86/memcpy.o] Error 1