I'm new in iOS development, and met this library linking problem in last few days.
I was trying to use GMGridView in a project, but cannot make it working.
This project is shipped as static library, so I just drag the xcodeproj file in my project. Then I added libGMGridView.a in Link Binary With Libraries, GMGridView in Target Dependencies. I also added the path in Header Search Paths.
However, Xcode still report .h file not found error when I tried to import GMGridView.h.
Could anyone give me a hand on this? Thanks in advance!
Had the same issue!!! Made it work!!!!
soooooooo:
copy GMGridView folder from https://github.com/gmoledina/GMGridView to your project dir
in xcode right click on any file group and choose add files
find GMGridView folder in your folder dir and choose GMGridView.xcodeproj - (dont copy, create groups not folders, add targets)
go to your project targets - search - HEADER_SEARCH_PATHS add- GMGridView/**
select Building phases in settings - choose target dependencies and add GMGridView
select Building phases in settings - link binary libraries and add libGMGridView.a
import should be:
#import "GMGridView.h"
#import <QuartzCore/QuartzCore.h>
Related
I want to include the FMDB library into an existing XCode Project. I know how to install it with pods. But is there a way to link it somehow with Build Phases - Compile Sources or Build Phases - Link Binary with Libraries? I am not sure how to do that, what files from FMDB to link, where to get the files, where to Drag & Drop what...
Simply download this project first: https://github.com/ccgus/fmdb
After extracting zip you see a folder under fmdb/src.Under src have another directory named fmdb. You need to drag this folder and drop into your project. Then you can easily access FMDB code.
I am trying to add many Objective-C files to my Swift project with folder reference mode that means when I drag and drop my files into project I am selecting "Create Folder Reference".
This is because all of my obj-c files use #include "/folder/folder/folder/" for example. These files are generated with j2objc project.
Now my problem is when I want to #import or #include some .h of these files in myproject-Bridging-Header.h Xcode can't find the header files.
I use #import "/folder/folder/folder/" like generated files but no chance.
I add $(PROJECT_DIR)/ in build settings - search header paths but it does need to write path completely like $(PROJECT_DIR)/folder/folder/folder/.
Is there any way to set main folder and Xcode find subfolders ? Or do I need to write every path separately ?
I found the answer after many days by myself!
When I drag and drop my files to my project in Xcode in mode "Create Folder Reference", just a reference to the files is added to Xcode and the files were in their folder where in my Mac.
I resolve this problem by add files to project's folder manually and then drag and drop from that location to Xcode. After that, I could access my file by its address in myproject-Bridging-Header.h like #import "/folder/folder/folder/file.h"
I have written customise controllers in swift in xcode, and with git i have uploaded them on gitlab, now when i'm trying to clone this library with other projects, i had to add all files in xcode to use those files, it's pretty annoying though to add files if we want to use them, is there any other way to overcome this
Basically you want to maintain library files and add them all at once to your Xcode, follow these steps
go to project file -> Build Phases -> Copy Bundle Resources
and then click on + icon
select "Add Other..."
Select your folder
Now it will always build your library files along with your project files.
Hope this Helps!!
I have created a sample application to perform bump distortion, using the GPUImage framework. I added this framework to my application, but I'm seeing the following error
Lexical or preprocessor issue 'GPUImage.h' file not found.
I have added the -ObjC flag to the Other Linker Flags, but I'm still seeing this error. How can I solve this problem and get my application to compile?
Adding GPUImage framework to XCode project could be tricky. So I haved added detailed step-by-step instructions w/ images on how to do it.
Static Compilation Method (detailed solution so we don't mess up)
This is Static compilation method. In this basically we will compile the framework using ./build.sh file. And simply add it to our XCode project, then configure XCode to properly use it.
Download GPUImage from Github and extract it (or just clone it).
Go to the GPUImagefolder in terminal
Run ./build.sh
Note: This will compile and create ready-to-use binary for all the sdks on your mac.
build.sh creates a folder called build and generates compiled binaries and dumps them to folders like: Release-iPhone, Release-iPhoneOS, Release-iphonesimulator etc folders.
For iPhone use Release-iphone (This also works for simulator).
Copy (not drag-drop) Release-iphone to your XCode project's root directory so that we have a local copy of framework.
Now iPhone drag-and-drop Release-iphone onto your XCode project. Make sure to check "Copy to .." option.
Note:
This Release-iphone folder contains two sub-folders: include and lib
include folder contains all the header .h files
lib folder contains compiled binary version file called libGPUImage.a
We now need to simply configure XCode to use .h and .a files.**
Select your project in the project explorer > Project name under Targets > select Build Phases > Expand Link Binary With Libraries
Add the libGPUImage.a to Link Binary With Libraries section. You may want to Right-click on libGPUImage.a then Open in Finder and finally drag-drop it.
While we are at it, also add the following GPUImage's dependent frameworks/ libraries
CoreMedia, CoreVideo, OpenGLES, AVFoundation, QuartzCore to Link Binary With Libraries section
Now, lets configure .h headers.
Select your project in the project explorer > Project name under Targets > select Build Settings > and type search paths to see search paths section.
Open Headers Search Paths by clicking on the value field.
Drag-and-drop the lib folder to that popup. Note: If it shows absolute path, change it to looks $(SRCROOT)/path/to/lib/. (You should have the framework relative to your xcode project see step 6).
Repeat 11 & 12 for Library Search Paths as well.
Additional tips: You can add .h files to Library Search Paths or Headers Search Paths, you can make them Recursive. I have a main root-folder called Dependencies folder where I keep all the dependencies like MySDK-framework including Release-iPhone. And I just have one search-path at the Dependencies (root folder) and made it recursive.
Did you follow all of the instructions from the Readme on the project page? From the installation instructions:
You'll also need to find the framework headers, so within your
project's build settings set the Header Search Paths to the relative
path from your application to the framework/ subdirectory within the
GPUImage source directory. Make this header search path recursive.
If you're seeing the above error, it means that you did not point the Header Search Paths at the right directory where you've installed GPUImage relative to your project, and / or did not click the checkbox to the left to make those search paths recursive.
I show some screenshots of where you need to go to set this in this answer, which explains something similar for the Core Plot framework. The same principles apply, only you need to find where you installed the GPUImage framework at.
I add relative path to "Header Search Paths", but there is still a error that is "not found".
Then, I add path to "User Header Search Paths", and it works.
May help you.
finally, I realized the KEY WORD is relative！
I put GPUImage source files in my project root dir:
before I solved the problem, I add Header Search Paths is:
$(PROJECT_DIR)/GPUImage/framework
$(PROJECT_DIR)/GPUImage/framework/iOS
and make them Recursive, but error is still there, So I changed Paths to:
GPUImage/framework and make it Recursive, then it works.
Hope it helps.
How do I add c library to Xcode Cocoa project?
Or what is the best option, I don't want to copy them into Cocoa project directory.
I have a C project called a which compiles into library a.dylib and header file a.h, the project is located in it's own directory.
I want to use this library from my objective-c application in Xcode.
How do I add the header file and library to my Xcode project?
I can drag the a.dylib into other frameworks but what do I do with a.h?
I figured it out.
I point to location of project a deployment directory (headers) to Search Path in project settings either:
as Header Search Paths, if used as <a/a.h>
or into User Header Search Paths, if used as "a/a.h"
As for library I just drag it to Xcode project and set it to refer to library instead of copy.
Here are the steps before adding a header file test.h in your project. Here is the files location root -> Library -> include -> test.h
click on build settings
Find User Header Search path. add your header file location here. add following value to Debug, Release and Any Architecture field. $(SRCROOT)/Library/include. Your project Root is the folder that contains your project, it conatins .xcodeproj file.
After adding path you will be able to add header in like this
# include "test.h"
You can drag them both the .a and .h files to Xcode, but make sure to not check the "Copy items to project folder". As for referencing the header file, you'll need to put it in a place where you can add a path to it in your #include/#import statements. Is there a reason you don't want to copy the header to your project file?