...

makefile

@@ -1,16 +1,16 @@
-CC = i686-elf-gcc
-LD = i686-elf-ld
+CC = x86_64-elf-gcc
+LD = x86_64-elf-ld
 AS = nasm
 
 # Modify these settings here for defines and debug info
-CFLAGS  = -g -D DEBUG
-LDFLAGS	= -g
-ASFLAGS = -g -F dwarf
+CFLAGS  =
+LDFLAGS	=
+ASFLAGS =
 
 # Do not modify
-CFLAGS += -m32 -ffreestanding -fno-stack-protector -nostdlib -nostdinc -Wall -Wextra -std=c23 -Isrc/shared
+CFLAGS += -m64 -ffreestanding -fno-stack-protector -nostdlib -nostdinc -Wall -Wextra -std=c23 -Isrc/shared
 LDFLAGS	+=
-ASFLAGS	+= -f elf32
+ASFLAGS	+= -f elf64
 
 SRC_C   := $(shell find src -name '*.c')
 SRC_ASM := $(shell find src -name '*.asm')