cmake可见性和AppArmor示例

cmake/visibility/printer/public/printer/printer.h

@@ -0,0 +1,9 @@
+#pragma once
+#include <string>
+#include <color/color.h>     // 公开头引用了 color → color 必须是 PUBLIC 依赖
+                             // 注意：这里没有 timeutil.h，也没有 PRINTER_TIME_FORMAT
+
+class Printer {
+public:
+    void print(const std::string& msg, Color c);
+};

cmake/visibility/printer/src/printer.cpp

@@ -0,0 +1,12 @@
+#include "printer/printer.h"
+#include "timeutil.h"        // 只在实现里用 → timeutil 是 PRIVATE 依赖
+#include <iostream>
+
+#ifndef PRINTER_TIME_FORMAT  // 只在本 .cpp 里用的宏 → PRIVATE
+#define PRINTER_TIME_FORMAT "%H:%M:%S"   // 没从 CMake 传进来时的兜底
+#endif
+
+void Printer::print(const std::string& msg, Color c) {
+    std::cout << timestamp(PRINTER_TIME_FORMAT) << " "
+              << colorCode(c) << msg << "\033[0m" << std::endl;
+}