将框架包含到xcode C ++项目中-链接器错误

Question

I'm trying to use libpng for reading data from image file in my c++ project, making on xcode and have some problems to include it.

So, I've make the next steps:

1. download libpng sources from http://libpng.sourceforge.net (version 1.6.29) and unarchive
2. download xcode project folder from here https://github.com/IGRSoft/libpng-xcode-project and put it into ./projects folder
3. open libpng.xcodeproj and make build. As a result I have /Users/admin/Library/Developer/Xcode/DerivedData/libpng-efgdtopqjltxorcwlnlvdirxqclm/Build/Products/Debug/ libpng.framework
4. I copied this file to my xcode project folder
5. Add this file to Project->General->Linked Frameworks and Libraries

Then, when I'm trying to compile project, I have an error:

ld: framework not found libpng clang: error: linker command failed with exit code 1 (use -v to see invocation)

What I'm doing wrong or what step was missed?

I'm new in xcode so be patient and give a detailed answer, please.

Answer 1

找不到库的错误通常是引荐人将标题搜索路径设置为错误，因此请建立设置/标题搜索路径，然后添加$（inherit）

Answer 2

Now I found solution.

I moved framework file from project folder to folder with .xcodeproj and it linked successfull: screenshot

But there is another one error on starting program:

dyld: Library not loaded: @loader_path/../Frameworks/libpng.framework/Versions/A/libpng
Referenced from: /Users/admin/Library/Developer/CoreSimulator/Devices/B875D4BF-EE6B-4601-9DFC-9C534AD6C085/data/Containers/Bundle/Application/981ECC6B-5EDB-4646-A990-510FEB619650/Happy Ball.app/Happy Ball
Reason: image not found