I'm playing around with lots of little C files whilst going through a book. Eg:
defs.h
chapter01
pointers.c
structPointers.c
vectorOps.c
defsTest.c
chapter02
selectionSort.c
recursion.c
bubbleSort.c
etc…
I'm currently using a great little app called CodeRunner, but I do miss the debugging and intellisense features in Xcode.
Is there a way to set it up the project so I can run each file individually from within the one project? I know I could always make a single workspace with a project for every single file, but that seems very cumbersome – there's gotta be a better way.
1)
Yep. Using the command line (you have to install the "Command Line Additions" that you can download from the "Looking for additional developer tools" link on this page building can be as easy as:
gcc -o selectionSort selectionSort.c
(provided you have a "main" function in your .c file).
Or:
2)
To build from within the Xcode IDE, you'd have to create a new product (or target) for each little app you want to build and add the appropriate .c file you want to build to that new product. The type of app you'd be building would be called a "Command Line Tool".
When you create a new project or select "New Target", this is what you would see and select:
Related
I want to run the example project which is available for free from this link. It is a simple FFT library and needs no compiler. In it, there is an example c file with its required header files and .c files.
When I try to run it in Vivado SDK I get errors of multiple definitions of fft and ifft. How can I run this example inside SDK?
What I had done is created an empty application project and then imported all these files inside src folder and then selected build the project option but didn't succeed in building and running the project.
I guess, looking at the ufft.zip archive, that you've tried to link files issued form the compilation of fft-dit.c and fft-dif.c.
Both files define ftt functions using differents method (see README).
You have to choose betwen using ftt-dif.c or ftt-dit.c, not both.
This is the same for itt-dif.c and itt-dit.c, choose one, not both.
I am trying to call this C library from my Swift code. I dragged the source files into my project and created a module.map file and added the directory containing the module map to Build Settings->Search Paths->Import Paths.
It seems to work. I can import the library and the name even shows up in autocomplete:
And I can access functions from the library and again autocomplete knows they are there:
But when I build, I get this error:
This name, "_mtex2MML_parse", is the same as the name of C function I'm trying to call except prefixed with an underscore.
I've gotten this same error before in similar circumstances trying to get cmark to work, but fixed it there by making sure that the .c file was included in the Target Membership, and then everything was fine. When I fiddled with doing that in this project, I've not had any luck. And in that case, autocomplete didn't even know about the function.
I've tried cleaning, deleting derived data, quitting Xcode, restarting computer, etc. I've tried on Xcode 8.3.3 Swift 3.1 and on Xcode 9b4, Swift 4.0. I'm on macOS 10.12.6. There is no other thing in the project besides this.
Can anyone offer any advice on how to proceed? Thanks.
I am using the LPCXpresso IDE to program my microcontroller to use the libjpeg library for a particular application. However, I cannot seem to get the LPCXpresso IDE to recognize libjpeg. The way I see it, there are two options:
1) Take the jpeglib.a file, include it as an external library, and then attempt to import jpeglib.h. I have tried this, at the IDE still does not recognize jpeglib.h.
2) Create a new static library from the libjpeg source code. Is this my only option? It seems a bit excessive.
Any tips regarding adding/linking external libraries in LPCXpresso would be greatly appreciated. Thanks!
You can easily add a library to Eclipse/LPCXpresso by creating a new project (not a C project or a LPCXpresso project but a 'normal' project) by clicking File->New->Project. Name is as you wish, let's say 'JPEG'. Add your library file to it under the folder 'lib' (you have to create the folder first). Call the library file 'libJPEG.a'. Also include the header file under the folder 'inc'. It is not mandatory to create these folders by the way, but it makes it all more organised.
The edit the properties of the project that's needs to include the header and library. Right click the project and choose properties. Go to C/C++ Build->Settings->MCU C compiler->Includes and add the include path of the inc folder of the library project. The go to C/C++ Build->Settings->MCU Linker->Libraries and add the library file WITHOUT the lib in front of the file name, hence just JPEG. Also add the library search path below (point to the lib folder).
That's all!
Not sure how to phrase the question.
I've created a few files for my c project that I would like to use for multiple projects.
Project root: ~/workspace/myproject
Files :
~/workspace/myproject/customlib/myfile.h
~/workspace/myproject/customlib/myfile.c
I was able to move them from my eclipse (Code Composer Studio) workspace and replace them with symlinks to their new location.
Custom lib dir: ~/myfiles/customlib
This is working fine but I'd rather not use the symlinks as it becomes necessary to add those symlinks to any project where I want my customlib files. Also when copy/pasting a project in eclipse it doesn't seem to understand the symlink and creates a copy of the file rather than the symlink.
I've set up an include path to ~/myfiles/ but when I compile I get a bunch of unresolved symbol errors.
My custom files depend on files from other include paths as well. (if that might be a hint as to why things are breaking)
Is there another way I can link in these files?
I figured out how I can do what I'm looking for but can't actually post the answer for 8 hours so I'll answer it here.
I was able to add the .c files as "Linked Resources" to my project.
So in the end I had an include path to ~/myfiles and a linked resource ~/myfiles/customlib/myfile.c.
Linked Resources can be found under Project Properties -> Resource -> Linked Resources -> Linked Resources(tab)
Unfortunately, my environment, Code Composer Studio 6 on Ubuntu would not allow me to actually add a linked resource through the IDE.
As a workaround I added the linked resource directly to the .project file.
~/workspace/myproject/.project
Under the section labeled "natures" I added
<linkedResources>
<link>
<name>myfile.c</name>
<type>1</type>
<locationURI>$%7BPARENT-2-PROJECT_LOC%7D/myfiles/customlib/myfile.c</locationURI>
</link>
</linkedResources>
The "$%7BPARENT-2-PROJECT_LOC%7D" refers to ~/workspace/myproject/../../ (a.k.a. ~/). The 2 tells it how many ../'s
In case you don't get the locationURI right the first time you should be able to edit the file path from Project Properties -> Resource -> Linked Resources -> Linked Resources(tab)
You can use any defined build variables for the locationURI. Here is another way to write the location URI. PROJECT_LOC/../../myfiles/customlib/myfile.c
Since this is an eclipse project file it will be overwritten with whatever eclipse decides is the proper format for locationURI
You can place the linked resource into a folder in your project by modifying the tag. projectsubfolder/myfile.c. This will create a folder projectsubfolder under your project directory. ~/workspace/myproject/projectsubfolder
Unfortunately this isn't an optimal solution as I will need to add linkedresource entries for every source file I create in my custom lib. CCS fumbles the linked resources when doing a project copy/paste, requiring you to add the linked resources again to your copied project.
In the end it feels like a solution but it really doesn't have much benefit over symlinked files. The only one being that when I copy/paste a project I will know the project isn't using the correct files when it doesn't compile. (symlinking will make a working project with copies of the files instead of the originals)
I imagine I will need to learn about creating .lib files to make the inclusion a little more pain free.
When I run a iOS App on my device , This error will appear
'CoreVideo/CoreVideo.h' file not found
not matter what project even though create a new project , once run the app on my device this error will appear
but the Simulator will be OK～
and I can't find some frameworks in
Target--Build Phase--Link Binary With Librares--add
like AVFoundation.framework AudioToolBox.framework
Should i reinstall the xcode on my mac~???
Make certain you've added the CoreVideo framework to your project.
Here's how I do it in my own projects:
If you need help figuring out where it is (it's hidden within the XCode app package itself), let me know and I can show you.
Also, make certain "Target Membership" is checked for CoreVideo in the File Inspector of your project. It looks like this: