重新设计了cmake编译过程

lib/CMakeLists.txt

@@ -0,0 +1,5 @@
+aux_source_directory(. LIB_SRCS)
+
+include_directories(../include)
+
+add_library(bus_lib ${LIB_SRCS})

lib/example.c

@@ -0,0 +1,9 @@
+//
+// Created by ricardo on 2022/4/29.
+//
+#include "example.h"
+
+void print(char* str)
+{
+    printf("%s", str);
+}