add files

Makefile

+CC := gcc
+CFLAGS := -O3 -Wall -Wextra -Wpedantic
+LFLAGS := -O3 -Wall -Wextra -Wpedantic -fPIC
+
+LPATH := /usr/local/lib/
+LSRCS := mars.c
+LOBJS := $(LSRCS:.c=.o)
+LTARGET := $(LPATH)libmars.so.1.0.1
+LNAME :=  libmars.so.1
+
+TARGET := out
+SRCS := main.c
+LIBS := -lmars
+
+IPATH :=  /usr/local/include/
+INCLUDE := mars.h
+ITARGET := $(IPATH)$(INCLUDE)
+
+.PHONY: clean all
+
+$(LTARGET): $(LOBJS)
+	$(CC) $(CFLAGS) -shared -Wl,-soname,$(LNAME) -o $(LTARGET) $(LOBJS)
+
+$(TARGET): $(SRCS)
+	$(CC) $(CFLAGS) -Wl,-rpath,$(LPATH) -o $(TARGET) $(SRCS) $(LIBS)
+
+$(ITARGET): $(INCLUDE)
+	cp $(INCLUDE) $(ITARGET)
+.c.o:
+	$(CC) $(LFLAGS) -c $< -o $@
+
+all: $(TARGET) $(LTARGET) $(ITARGET)
+	@echo Successful compilation
+
+clean:
+	$(RM) *.o

main.c

+#include <stdio.h>
+#include <stdlib.h>
+
+#include <mars.h>
+
+int main(void){
+
+  printf("%s\n", "Hello earth!");
+  printf("%s\n", mars());
+  return EXIT_SUCCESS;
+}

mars.c

+char* mars(void){
+  return "Hello Mars!";
+}

mars.h

+#ifndef MARS_H_
+#define MARS_H_
+
+extern char* mars(void);
+
+#endif /* mars.h */