shell can launch another user processgit add .git add .!

programs/test/makefile

@@ -0,0 +1,23 @@
+CC = i686-elf-gcc
+LD = i686-elf-ld
+
+CFLAGS = -ffreestanding -O2 -Wall -Wextra -I../../rocklibc/include
+LDFLAGS = -m elf_i386 -nostdlib
+
+TARGET = test.elf
+
+all: $(TARGET)
+
+crt0.o: crt0.S
+	$(CC) $(CFLAGS) -c crt0.S -o crt0.o
+
+main.o: main.c
+	$(CC) $(CFLAGS) -c main.c -o main.o
+
+$(TARGET): crt0.o main.o ../lib/rlibc.a
+	$(LD) $(LDFLAGS) -T linker.ld crt0.o main.o ../lib/rlibc.a -o $(TARGET)
+
+clean:
+	rm -f *.o $(TARGET)
+
+.PHONY: all clean test