Integrate flaterm terminal

kernel/Makefile

@@ -1,14 +1,22 @@
 .PHONY: all clean
 
 ARCH ?= x86_64
+PUTCHAR_ ?= fb
 
 CFLAGS := -ffreestanding -Wall -Wextra -g -fcommon -nostdinc
 
 CFLAGS += -I. \
 					-I../limine \
 					-I./std/include \
+					-I./flanterm/src \
 					-DPRINTF_INCLUDE_CONFIG_H=1
 
+ifeq ($(PUTCHAR_),fb)
+CFLAGS += -DPUTCHAR_=PUTCHAR_FB
+else
+CFLAGS += -DPUTCHAR_=PUTCHAR_SERIAL
+endif
+
 LDFLAGS := -nostdlib -static -T arch/$(ARCH)/link.ld
 
 include arch/$(ARCH)/$(ARCH).mk
@@ -20,10 +28,14 @@ SRCFILES := $(wildcard *.c) \
 	$(wildcard pmm/*.c) \
 	$(wildcard bootinfo/*.c) \
 	$(wildcard spinlock/*.c) \
+	$(wildcard term/*.c) \
 	$(wildcard hal/*.c) \
 	$(wildcard hal/$(ARCH)/*.c) \
 	$(wildcard hal/$(ARCH)/*.S) \
-	$(wildcard *.S)
+	$(wildcard *.S) \
+	$(wildcard std/*.c) \
+	$(wildcard flanterm/src/*.c) \
+	$(wildcard flanterm/src/flanterm_backends/*.c)
 CFILES := $(filter %.c,$(SRCFILES))
 ASFILES := $(filter %.S,$(SRCFILES))
 OBJ := $(patsubst %.c,%.o,$(CFILES)) $(patsubst %.S,%.o,$(ASFILES))