C错误:“对'sf_open'的未定义引用"来自libsndfile [英] C error: "Undefined reference to 'sf_open'" from libsndfile

问题描述

我正在使用Code :: Blocks测试一些代码，但我无法接受此代码:

  #include< stdio.h>#include< stdlib.h>#include< sndfile.h>int main(){SNDFILE * sf;sf = sf_open("file.wav"，SFM_READ，& info);//此行中发生错误... 

错误是未定义对'sf_open'的引用"，这不仅发生在sf_open上，而且还发生在sndfile.h中的任何函数上.

实际上，这是我到达这里的目的:

• 我首先从mega-nerd网站下载并安装了Windows x64的libsndfile(我正在使用Windows 10)，并尝试运行此代码...无法正常工作，这次的错误是"sndfile.h:没有这样的文件或目录"

• 所以过了一会儿，我转到了安装目录(C:\ Program Files \ Mega-Nerd \ libsndfile \ include)，并将标头复制到CodeBlocks defaut dir中，以获取标头(C:\ Program Files(x86)\ CodeBlocks \ MinGW \ include)，然后我再次尝试，终于找到了标头！但是现在发生了这个错误...

所以，我想我没有以正确的方式打开标题，对此我没有太多的经验...我在互联网上的任何地方都找不到答案，我希望我能在这里找到一些运气，谢谢！

解决方案

正如Jeremy所说，除了sndfile.h的include之外，还必须链接libsndfile库(它应该是.lib或.a文件./p>

仅通过链接即可他提供了

I am using Code::Blocks to test some codes, and I just can't biuld this code:

#include <stdio.h>
#include <stdlib.h>
#include <sndfile.h>

int main()
{
SNDFILE *sf;

sf = sf_open("file.wav",SFM_READ,&info); //error happens in this line

...

And the error is "undefined reference to `sf_open'", this not only happens to sf_open but also to any function from sndfile.h.

Actually here is what I did to get here:

• I've first downloaded and installed libsndfile for Windows x64 (I'm using Windows 10) from mega-nerd website, and tried to run this code...didn't work, the error this time was "sndfile.h: no such file or directory"

• So after a while I went to the installation dir (C:\Program Files\Mega-Nerd\libsndfile\include) and copied the headers to the CodeBlocks defaut dir for headers (C:\Program Files (x86)\CodeBlocks\MinGW\include), then I tried again and it finally found the header! But now this error is happening...

Sooo I guess I didn't open the header in the right way, I don't have much experience with this...I couldn't find the answer anywhere in the internet, I hope I get some luck here, thanks!

解决方案

As Jeremy stated, apart from include for sndfile.h, you have to link against the libsndfile library (it should be a .lib or .a file.

To link it just follow the link he provided

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