curl being new to me, I am figuring out an easier way to compile it on Windows. I've managed to find a good documentation explaining in layman's terms all the steps, however this doc is based on curl-7.9.6.
It was simpler since curllib.dsw which is the Visual Studio Project file for curllib was found in folder curl-7.9.6\lib. So building it was resulting in libcurl.dll + libcurl.lib
Unfortunately this project file is no more in the latest version 7.46.0, and I would not like to mess around using other techniques I am not familiar with, compiler other than msvc (e.g MinGw), and if possible without resorting to cmd.
I have already done some researches online before posting this thread, but we never know maybe someone has written on this topic very simple documentation that everyone could understand and willing to share it publicly to get both the static library file and DLL (raised just above) or have found a way to get back the project file (.dsw) in the latest release which will a priori be straightforward to compile using Visual Studio 2013 (v120)
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There's a great article here that describes how to use native C++ libraries in Xamarin/C#, and I would assume that this would extend to MAUI: https://learn.microsoft.com/en-us/xamarin/cross-platform/cpp/
I followed these instructions, and put together an end-to-end demo solution of it here: https://github.com/whodges/bindingsample. This does require that you link Visual Studio to a MacBook to build the full solution.
That example essentially uses the default MAUI template, and modifies it slightly so that the actual 'click counter' value is set and retrieved from a native library on a per-platform basis. For Windows, that's a C++ DLL (works great). For Android, that's a .so library (works great). And for iOS, that's a static .a library, and here's where I'm running into trouble: when I try to launch this app using the iOS Simulator, it fails with a clang++ error, and something along the lines of "Could not extract the native library 'libCounteriOS.a' from .../obj/Debug/net6.0-ios/iossimulator-x64/linker-cache/libCounteriOS.a'. Please ensure the native library was properly embedded in the managed assembly (if the assembly was built using a binding project, the native library must be included in the project, and its Build Action must be 'ObjcBindingNativeLibrary')".
I created a C# .NET iOS Binding Library project (Counter.iOS in my example), and this is supposed to bundle libCounteriOS.a, which is generated when CounteriOS (a C++ project) is compiled. First, when Counter.iOS is built using Visual Studio on Windows, it fails to generate the Counter.resources folder in its 'bin' folder, along with the subsequent 'manifest' file. When I use Visual Studio for Mac, these files do get generated. So, I stuck with Visual Studio for Mac to build the iOS.Counter project (everything else is built with Visual Studio on Windows).
Regardless, I still get the "could not extract the native library" error I described. I've tried setting the library file's Build Action in Counter.iOS to ObjcBindingNativeLibrary, but that just results in an unhelpful "Build failed - see build log for details" error in Visual Studio for Mac, and I cannot find said log file for the life of me. On top of that, it's not an Objective C library anyway - it's a C++ one - so I'm not sure if this step is actually appropriate. Does it have to be Objective C? The Xamarin article suggests otherwise, and the native reference option 'Is C++' is there as well. I've also tried setting libCounteriOS.a's Build Action to 'BundleResource' - no luck with that either. I've tried it with .NET 7.0 as well - also no luck there.
I'm really at a loss. Is this even possible? It doesn't seem to work and I've been poking at it for weeks on it. That Xamarin article seems to suggest it should be possible. Any help would be greatly appreciated.
BUMP
Good afternoon,
I've been browsing google looking for a comprehensible guide to installing and adding the dependencies of cURL for Visual Studio Community with no real progress.
I've downloaded and extracted the package to C:\curl\curl-7.47.1 and built it by using the Developer Command Prompt from the winbuild\ (nmake /f Makefile.vc mode=dll).
The problems start as I try to find the libraries and includes that I am supposed to add to MVS' dependencies.
The three builds are built with no issues and added to the root of the cURL directory, but there is no release\ or debug\ in the package that I can add to my dependencies (the lib\ only has two libcurl files in it).
I've attempted to use a trial/error approach to finding the correct dependencies in a test project, but can't seem to get rid of the errors (ie. not having the correct dependencies).
I'm not sure if this has to do with the fact that I am using VS community, or if I simply am making some sort of errors in the "installation" process, and since none of the guides that I have found seem to help me I thought I'd turn to you guys.
cURL seems to be a somewhat commonly used library (if not the best URL-library?) and should see quite frequent use, but I can't for the love of me find a solution to the above mentioned problem(s).
Thank you for your help and please do tell me if you need any further information!
This was solved by looking into the (un)marked answer of one of many questions of SO.
Look at mtlynch's answer at:
Getting LibCurl to work with Visual Studio 2013
In the same spirit as the question Can I download the Visual C++ Command Line Compiler without Visual Studio? I would like to see if it is easy to bundle the appropriate part of Visual Studio to build Universal App written in C++. Following the answer by #Alek to the aforementioned question, I managed to create an archive where I can basically unzip and use. But this is for traditional desktop (I would say, command-line) programs. I tried to do similar thing for Universal App and there are a couple of issues
The official way (i.e. what Visual Studio does under the hood) is to use MSBuild. Unfortunately, I do not know what are and how to get all of its dependencies. It seems to require significant configuration effort as well.
There is no documentation on how to build resources (e.g. generate C++ source and headers from XAML), how to generate the .appx. If possible, a Makefile template is very much appreciated.
The reason to ask for this is because Visual Studio failed me so many times. For instance, the November Update messed up my entire system; the SDK installer fail at 96% and rolled back. Previously, the upgrade to VS2015 (from 2013) also messed me up entirely. It seems that the only solution to these problems is complete uninstall. Having a portable archive where I can just unzip and restore my production environment back to health is something I would say extremely desirable.
Note: I do not care about the IDE. I only need the ability to build apps from source code on the command prompt.
I set up OpenCV with Code::Blocks as per this tutorial: http://kevinhughes.ca/tutorials/opencv-install-on-windows-with-codeblocks-and-mingw/.
I've got as far as building the test program at the end successfully, but when I try to run it I get the following error: "The application was unable to start correctly (0xc00000be). Click OK to close the application."
The one thing that is certainly different from the tutorial for me is that I'm working with OpenCV 3.0.0, Code::Blocks 13.12 and the latest version of mingw (number not obvious from their website or the installer).
I found that other people had had this problem in the past, e.g. The application was unable to start correctly (0xc00000be)
However, it has been a long time since that thread was active, I'm working with newer versions of the software and, most importantly, the answer given there didn't help (I compiled openCV with the same mingw that I'm using with Code::Blocks), so I thought this question would be worth asking (sorry if it's not, I'm rather new to this).
Could anybody suggest a fix that might get rid of this error?
A few other things to note:
I didn't download the Code::Blocks that came with mingw as I was advised against it, I got them separately as per the tutorial
I have installed OpenCV and Code::Blocks on my E: drive, though mingw is still on my C:.
I have added both mingw and OpenCV to my PATH variable, and mingw to my Path variable
I have linked the libraries in both the main compiler settings for Code::Blocks and the Build Options of my project.
I'm working from a 64-bit Windows 7 Laptop, but I have done everything 32-bit style as advised in the tutorial.
Thanks in advance!
So, one solution I've found to this problem is to copy all the .dll files from "...\opencv\build\x86\mingw\bin" to the project file (build directory).
Having done that, the project will run fine. This still doesn't (directly) explain why it wont run without those files (at least, several sources including the tutorial imply it should), and so isn't really optimal. I will continue to look for a solution for this so I don't have to clutter every opencv project I make with the .dlls.
However, for anyone simply wanting to get stuck into coding who is having this problem, I recommend that solution.
Based on http://arcsynthesis.org/gltut/Building%20the%20Tutorials.html - the book Im reading to learn openGL, I need to build my file projects with premake4. The book says:
"The SDK his library uses Premake to generate its build files. So, with premake4.exe in your path, go to the glsdk directory. Type premake4 plat, where plat is the name of the platform of choice. For Visual Studio 2008, this would be “vs2008”; for VS2010, this would be “vs2010.” This will generate Visual Studio projects and solution files for that particular version."
So, I've put the premake4.exe file inside but the problem is: When I execute it, one black command window shows up for a few ms, then fades and nothing happens.
I made one research on google about how to work with premake4 but I couldnt find nothing useful, even here on stack or you tube. Anyway, This seems weard since premake4 is really known, then I ask: Does anyone know what Im missing or could point me to somewhere which I can understand how to build my openGL "sdk" files?
Im using premake 4.3 with Windows 8.
Edit: I just found someone with the same problem - but the solution isnt really applying for me: Can't get premake working - gltut demos
Edit 2: Found once again someone with the same problem, but this no solution on the topic and also the OS is different from mine.. http://industriousone.com/topic/terminal-logout-when-running-premake4exe
As it says in the documentation you quoted:
Type premake4 plat, where plat is the name of the platform of choice. For Visual Studio 2008, this would be “vs2008”; for VS2010, this would be “vs2010.”
Just running it with no arguments (which is what double-clicking on it does) is not sufficient. You need to open a command prompt, cd to the directory the project is in, and then run premake4 vs2008 (replacing vs2008 with the name of the platform you're targeting).
The most recent version of Visual Studio supported by Premake is 2010, so for later versions, you'll still have to use premake vs2010 - later versions of VS should still be able to load the project.
ToxicFrog's answer was extremely helpful, but just to be a little more blunt and clear about the answer for someone who might not how to use the command prompt very well.
Place 'premake4.exe' inside your 'glsdk directory (file).
In Windows, hold down the 'Shift' key and right-click the glsdk directory.
Select "Open Command window here" from the drop-down box .
Type premake4 vs2010 (or whichever platform you are using. For example, if you are using Visual Studio 2013, use vs2013 for your platform.).
Note: According to ToxicFrog and Victor Oliveira the platform vs2010 is the highest it will support . However, I recently tried it with vs2012 and it worked just fine).