G ++ -I编译程序选项 [英] G++ -I option for compiling program

问题描述

这是一个小问题，不能由我解决这样的Linux程序新手。

Here is a little problem that cannot be resolved by me such a Linux program newbie.

现在我有一个main.cpp程序，需要编译，是

Now I have a main.cpp program which need to be compiled, there is a

#include "Down.h"

。

实际上，这个头文件存在于另一个目录中，它位于
../../../ include
目录。此外，Down.h所需的一些其他头文件也位于这个../../../include目录。

Actually, this header file exist in the other directory, which locates at ../../../include directory. Besides, some other header files needed by Down.h also locate at this ../../../include directory.

这里是问题，我编译main .cpp with command

Here is the problem, I compile main.cpp with command

g++ -I /../../../include main.cpp

但是，它提供了大量的错误信息，这意味着这样做是不正确的。

However, it gives lots of error info which means it is not correct to be done like this.

还是应该将include声明改成这个呢？

Or should I also change the include declaration into this one?

#include "../../../include/DownConvert.h"

所以，你能给我一些建议？感谢。

So, can you leave me some advices? Thanks.

使用g ++ -I ../../../后，包括main.cpp，我得到以下错误，也许你可以看看他们， 谢谢。

after using g++ -I../../../include main.cpp, I get the following errors, maybe you can take a look at them, thanks.

$ g++ -I ../../../include main.cpp 

In file included from ../../../include/DownConvert.h:98,
from main.cpp:92: ../../../include/ResizeParameters.h:4:22: error:
TypeDefs.h: No such file or directory 

In file included from /usr/include/c++/4.4/bits/stl_algo.h:61, 
from /usr/include/c++/4.4/algorithm:62, 
from ../../../include/H2 

推荐答案

g++ -I /../../../include main.cpp

在-I后面看到前导斜杠，这是一个绝对路径。将其更改为相对路径（如下所示），它会正常工作

See that leading slash after the -I, that's an absolute path. Change it to a relative path (shown below) it'll work ok

g++ -I ../../../include main.cpp

这篇关于G ++ -I编译程序选项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！