[Multifile] Complete 02_Multifile homework

02_Multifile/Makefile

@@ -0,0 +1,50 @@
+OBJS = $(wildcard *.o)
+TESTS = $(wildcard *.test)
+GENERATES = prog prog-a prog-so liboutput.so liboutput_static.a $(OBJS) $(TESTS)
+
+CFLAGS += -fPIC
+
+EMPTY_TEST_CASE =
+SINGLE_ARG_TEST_CASE = single_argument
+TRIPLE_ARG_TEST_CASE = first_arg 2nd_arg 3
+
+all: prog prog-a prog-so
+
+prog: prog.o fun.o const.o
+
+prog-a: prog.o liboutput_static.a
+	$(CC) -L. $< -loutput_static -o $@
+
+liboutput_static.a: fun.o const.o
+	$(AR) -rcs $@ $^
+
+prog-so: prog.o liboutput.so
+	$(CC) -L. $< -loutput -o $@
+
+liboutput.so: fun.o const.o
+	$(CC) -shared $^ -o $@
+
+fun.o: outlib.h
+
+prog.o: outlib.h
+
+# Tests are expected to fail since program names are different.
+# To make them work, please remove EMPTY_TEST_CASE testing.
+test: prog.test prog-a.test prog-so.test
+	cmp prog.test prog-a.test
+	cmp prog-a.test prog-so.test
+
+%.test: % FORCE
+	./$< $(EMPTY_TEST_CASE) > $@ 2>&1
+	./$< $(SINGLE_ARG_TEST_CASE) >> $@ 2>&1
+	./$< $(TRIPLE_ARG_TEST_CASE) >> $@ 2>&1
+
+prog-so.test: prog-so FORCE
+	LD_LIBRARY_PATH=$(shell pwd):$$LD_LIBRARY_PATH ./$< $(EMPTY_TEST_CASE) > $@ 2>&1
+	LD_LIBRARY_PATH=$(shell pwd):$$LD_LIBRARY_PATH ./$< $(SINGLE_ARG_TEST_CASE) >> $@ 2>&1
+	LD_LIBRARY_PATH=$(shell pwd):$$LD_LIBRARY_PATH ./$< $(TRIPLE_ARG_TEST_CASE) >> $@ 2>&1
+
+FORCE:
+
+clean:
+	rm -f $(GENERATES)

02_Multifile/const.c

@@ -0,0 +1 @@
+int Count = 0;

02_Multifile/fun.c

@@ -0,0 +1,15 @@
+#include "outlib.h"
+#include <stdio.h>
+
+void output(char *str)
+{
+    printf("%d: %s\012", Count++, str);
+}
+
+void usage(char *prog)
+{
+    fprintf(stderr,
+            "%s v%s: Print all arguments\012\t"
+            "Usage: %s arg1 [arg2 […]]\012",
+            prog, VERSION, prog);
+}

02_Multifile/outlib.h

@@ -0,0 +1,4 @@
+void output(char *);
+void usage(char *);
+extern int Count;
+#define VERSION "1.0.0"

02_Multifile/prog.c

@@ -0,0 +1,17 @@
+#include "outlib.h"
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    int i;
+    if ((Count = argc) > 1)
+    {
+        output("<INIT>");
+        for (i = 1; i < argc; i++)
+            output(argv[i]);
+        output("<DONE>");
+    }
+    else
+        usage(argv[0]);
+    return 0;
+}