xcode7: Undefined symbols for architecture i386: "_iconv_open", referenced from:

在整合cocos和quick时，出现这个错误，我按照以前的方法

link binary with libraries 中add libiconv.2.dylib ，发现已经没有了这个库。

网上找了一下，找到一个：

问题：

I use libxml to save game data. in order to support chinese character, i use iconv to convert format.
but a linke error was appeard:

Undefined symbols for architecture i386:
"_iconv_open", referenced from:
FConverter::code_convert(char*, char*, char*, unsigned long, char*, unsigned long)in GameData.o
"_iconv", referenced from:
FConverter::code_convert(char*, char*, char*, unsigned long, char*, unsigned long)in GameData.o
"_iconv_close", referenced from:
FConverter::code_convert(char*, char*, char*, unsigned long, char*, unsigned long)in GameData.o
ld: symbol(s) not found for architecture i386

I was not familiar with mac os and xcode, so i try to resolve it refer to visual c++.
I found a configuration in target/Build Phase and search iconv, there are three dylib under the list.
libiconv.2.4.0.dylib
libiconv.2.dylib
libiconv.dylib.
i select libiconv.dylib. compile error was resolved.

but i am not sure is this the best solution, and will it cause another problem later.

does dylib mean dynamic library like dll? if i have to public or share my application with this dylib file as windows application combine dll file.

thanks a lot.
:D

解答：

After Xcode 7, Apple did a lot to strip the size of apps, including changing .dylib to .tbd.
Here you don't need to add library & framework but you can add the library by changing the following option:
Other Linker Flags > Add "-l{yourlibraryname} (no space after -l)
In your case, you can add -liconv in Other Linker Flags.

原文地址：http://discuss.cocos2d-x.org/t/link-error-in-xcode-4-2-iconv-error/1173