I am coding an OCR app where I am using GPUImage library for image filtering. I added GPUImage xcode project manually by adding files. I followed the steps given properly and GPUImage builds successfully. However, my project build is unsuccessful because it doesn't recognize GPUImage functions though the import is recognized.\
Also the build fails when I try to convert it to swift 4.0
I am coding an OCR app where I am using GPUImage library for image filtering. I added GPUImage xcode project manually by adding files. I followed the steps given properly and GPUImage builds successfully. However, my project build is unsuccessful because it doesn't recognize GPUImage functions though the import is recognized.\![screen shot 2018-01-26 at 11 14 53 am](https://user-images.githubusercontent.com/25450035/35426625-61a89a12-028a-11e8-90ac-63b2853994b7.png)
Also the build fails when I try to convert it to swift 4.0
Please help me. Thanks in Advance.