day 4

Makefile

@@ -2,14 +2,27 @@ FILES = $(wildcard ./*)
 SRCS  = $(filter %.c,$(FILES))
 BINS  = $(SRCS:%.c=%.elf)
 
-CFLAGS = -Wall -Werror -pedantic -Wno-unused -D_GNU_SOURCE -std=gnu2y\
-		 -O3 -g -Ttext=C475000 -static -nostartfiles -fno-stack-protector\
-		 -march=x86-64 -msse2 -msse3 -mssse3 -mpclmul -mpopcnt -madx -mbmi2 -mrdrnd -mrdseed
+MUSLFILES = $(wildcard ./musl/*)
+MUSLSRCS  = $(filter %.s,$(MUSLFILES))
+MUSLOBJS  = $(MUSLSRCS:%.s=%.o)
+
+CFLAGS = -Wall -Werror -pedantic -Wno-unused -std=gnu2y\
+		 -O3 -c -g -fno-stack-protector -fno-pie\
+		 -fno-semantic-interposition -fno-trapping-math\
+		 -march=x86-64 -mprefer-vector-width=128 -mpopcnt -malign-data=compat -malign-stringops
+
+LFLAGS = -Ttext=C475000 -static -nostdlib -no-pie
 
 all: $(BINS)
 
-%.elf: %.c
+%.elf: %.o start.o | %.c lib.h $(MUSLOBJS)
+	ld -o $@ $(LFLAGS) start.o $< $(MUSLOBJS)
+
+start.o: start.s
+	nasm -f elf64 -o $@ $<
+
+%.o: %.c
 	gcc-tree -o $@ $(CFLAGS) $<
 
 clean:
-	rm ./*.elf
+	rm -f *.elf *.o