问题描述
我不得不用 C++ 为 Arduino 编写一些代码.代码运行良好，但不能在 Arduino 中运行，因为我使用了一些库，如向量、ifstream 等.
I had to write some code for Arduino in C++. The code works perfectly, but wouldn't work in Arduino as I had used some libraries like vectors, ifstream, etc.
所以我包含了 StandardCplusplus 库.我下载了 zip 版本的库.
So I included the StandardCplusplus library. I downloaded the zip version of the library.
我将提取的版本复制到 Arduino 的库文件夹中.现在矢量库可以工作了，即它不会给出任何编译错误.
I copied the extracted version into the library folder of Arduino. Now the vector library works, i.e. it doesn't give any compile error.
但是在 #include fstream 上，Arduino 给出以下错误:fatal error: unistd.h: No such file or directory
But on #include fstream, Arduino gives the following error: fatal error: unistd.h: No such file or directory
推荐答案
有点晚了，但也许其他人遇到了同样的问题，就像我几分钟前正在寻找答案一样.我通过定义一个符号 ARDUINO(我使用 eclipse，所以我在项目的 Properties --> C/C++ Build 中添加了一个新符号，从而将问题从错误变成了警告> --> Settings --> AVR Compiler/AVR C++ Compiler --> Symbols. 不要知道您在使用什么，但您可以在调用 avr-g++ 时添加 -DARDUINO).问题出在 ios.cpp 文件中，其中包含:#ifdef ARDUINO#include #include #别的#include <fstream>#万一一旦在 ios.cpp 文件中看到 ARDUINO 符号，就会使用两个较早的包含而不是 fstream.
A bit late, but maybe someone else encounters the same problem, just like me looking for an answer couple of minutes ago. I turned the problem from an error to a warning by defining a symbol ARDUINO (I use eclipse, so I added a new symbol in the project's Properties --> C/C++ Build --> Settings --> AVR Compiler / AVR C++ Compiler --> Symbols. Don't know what you're using, but you could add -DARDUINO when calling avr-g++). The problem is in ios.cpp file, where you have: #ifdef ARDUINO #include <HardwareSerial.h> #include <serstream> #else #include <fstream> #endifAs soon as the ARDUINO symbol is seen in the ios.cpp file, two earlier includes are taken instead of the fstream.
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