Hi I am new to android NDK Devlopment.I downloaded Android NDK 4 for windows.I read through the docs.But i am not clear with it.
First thing is that,I want to develop the native file which may be c 0r c++.I think Using Cygwin will come to play.I dont have any idea or how to use cygwin .From the Docs i just read Cygwin is required for Windows platform.Apart from it ,i dont have any knowledge about it.
Not yet started with NDK Concepts.Help Required
Cygwin is a way to make Windows support some linux functionality. If you install cygwin on your windows machine you'd be able to run some linux software on windows (you'd have to recompile it especially for cygwin though). You can find it and more information about it here. There's also a good explanation at the wiki page here.
If the Android NDK needs it I suppose the Android NDK needs some linux functionality or tools to work properly. The other option might be to install Linux on a machine and run the Android NDK on there, it might be better since I assume Linux is the native environment for Android NDK development.
Since you're saying that you're a bit unclear about the NDK, you should probably be aware that as far as I understand you can not build a whole Android app using it, you can only develop bits of it, you will still need to develop at least part of the app to run on top of the Dalvik virtual machine, which, as far as I know, means that you'll have to write that bit in Java. In general I think that you should develop Android apps only in Java unless there is a specific reason to build certain parts of it using the NDK.
From wiki:
Cygwin (pronounced /ˈsɪɡwɪn/,[2] SIG-win) is a Unix-like environment and command-line interface for Microsoft Windows. Cygwin provides native integration of Windows-based applications, data, and other system resources with applications, software tools, and data of the Unix-like environment. Thus it is possible to launch Windows applications from the Cygwin environment, as well as to use Cygwin tools and applications within the Windows operating context.
Cygwin consists of two parts: a Dynamic-link library (DLL) as an API compatibility layer providing a substantial part of the POSIX API functionality, and an extensive collection of software tools and applications that provide a Unix-like look and feel.
So, Cygwin is a set of tools which allows you to emulate a unix-like (or linux) environment on your windows machines.
The NDK is the Android Native Development Kit. It allows you to write parts of your application in native code (C/C++) and integrate them into your application. Your application still runs under the Dalvik VM but it can load shared objects creating using a cross compiler. The NDK contains all the necessary tools and build scripts to generate native code binaries. It's an advanced concept and one you should probably wait on until you fully understand the architecture.
The reason why it requires Cygwin (or some flavor of linux) is because it uses GnuMake and other linux tools such as awk or Nawk. These tools are not available (or are really hard to use) on windows platforms, hence the need for at least Cygwin (though I would advise you do yourself a favor and just install linux).
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I have searched high and low for installers to customize after creating my applications (small, medium, and much bigger) in size. Yes, portable apps great but most people just want to install and also have it just update when updates are available and install and restart the next time or at least warn the user to save the work before the Application can reopen.
Yes, I have looked at NSIS and other installers, but they are merely for windows and not for both windows and Linux. Some of these installer projects have been discontinued. Most people who use Linux don't like to always build from the source.
I was wondering how I can create a POSIX compliant installer that my software can install on both Windows and Linux. What are the steps involved? I assume most or all installers use C++ to do all of the grunt work. I am interested in creating my own to fully understand C++ and how it works. This why I really need to know how an installer is made. Any helpful advice is welcomed.
Thanks in advance.
"Mainstream": A shared packaging format seems elusive. However, there are a few multi-platform deployment tools available. Installsite.org has a list towards the bottom here. I guess the two most commonly used tools are (both are commercial):
Advanced Installer for Java / Advanced Installer Enterprise (Windows and Mac, no Linux)
Flexera InstallAnywhere (Windows, Mac, Linux)
From this answer:
I've seen several tutorials on how to compile C++ applications for Windows on a linux system, however, I have failed to find a way to use Windows specific headers (i.e Windows.h) in my C++ program to compile for Windows (.exe/.dll). I was wondering if anyone knew how I can compile Visual C++ programs on Linux that use Windows OS Specific headers/functions (just compile). Thanks!
You can't. Windows system headers, e.g. windows.h reference OS specific APIs that are not known to Linux. Only Microsoft's compiler can create Windows format objects and executables and it doesn't run on Linux.
You can create cross-platform applications consisting of common code that will build and run on Windows and Linux. But the only way to use platform specific APIs in such an application, e.g. GUI, is to #define sections in/out according to the build environment.
I was trying to follow the the installation tutorial of the Native Client SDK found here. However, my Samsung Chromebook (in developer mode) does not want to run ./naclsdk (chmod +x done), but instead returns the following:
32-bit runtime environment was not found on this
system. Specifically the 32-bit dynamic loader which is needed by the NaCl
compilers was not found ('/lib/ld-linux.so.2'). On modern debian/ubuntu
systems this is included in the 'libc6:i386' package.
On here they write that the PNaCl should run on ARM computers, however, on some other forums I read that wasn't the case. I've tried enabling two flags, as described on a site which I can't post due to a lack of reputation, but it looks like that'll only change things when using PNaCl, not during the installation of the SDK.
Is it possible to install that SDK on my Chromebook and, if so, how?
There's a bit of confusion: when the documentation says "PNaCl and NaCl work on ARM", it means the part that runs inside of Chrome which users would use. The SDK is currently only built for x86-64 Windows/Linux/OSX, and not for ARM. The main reason is that it's never been requested, probably because ARM machines are quite slow compared to usual development machines.
That being said, I don't think it's silly to use ARM as a development machine, and I've built my own PNaCl toolchain for ARM in the past. There are build instructions for the toolchain. I haven't built it recently, and it may have bitrotted a bit so if you run into issues I suggest emailing the team or better yet sending a patch! I expect any issue to be fairly minor, especially if you only want to use pnacl-clang or nacl-clang (as opposed to the GCC toolchain).
Background:
Im using QT and have visual studio 2012 as my IDE (used the QT plugin for visual studio).
And finally the whole project is done. However due to my .NET background I have no experience when it comes to deploying my project so it can be run on Linux.
Question:
Anyone knowing how to deploy a QT project made in visual studio to linux?
You should install Linux and prepare a Qt development environment on it.You can then copy your project there, compile it and see the results in the real environment. This way you can cope with the minor differences when porting from one OS to another easily.
So don't think of cross compiling your app for Linux on Windows. From a complexity point of view, I think setting up a Linux machine (VM or not) and the necessary environment for Qt is a whole lot simpler than cross compiling bug hunting afterwards. After all you will need a real target environment to finally test your application.
Before you can deploy something you have to compile it for that platform, and here you have two main choiches: either you cross-compile which means you compile it on windows using a set of tools so that your software is built to run on a linux, or you get a linux machine, you copy your entire project over and let Qt for linux do the magic.
Once you have your working binary compiled on linux or for linux then you start thnking about deployoment.
If you really want to be fully linux-compatible and "linux-ally correct" you should distribute your source-code precooked using some tools like "automake" that will make it possible to linux users to compile it on any linux version.
If you do not want to release your source code, you technically can distribute binaries without source code (not sure if you will be ok with licenses) but you have to be aware that there is no standard in linux for distributing binary packages, there are at least 2 main package building standards that are the ubuntu/debian style and red hat (and friends) style.
You are going to find plenty of documentation about all this stuff from cross-compile to automake and of course building debian packages and building red hat rpm packages.
I like the Linux operating system and vim editor, but there are many companies that develop under Windows environment in Visual studio etc. There is a possibility that I will have to work for such a company in about a month.
I'd like to do my work on my Linux system and copy the files to them. I have experience with both developments and I found out that I don't want to work with MS products but I like programming and writing MS code is not such a pain.
Are you a similar developer? Could you give me some advice about your methodology to be most of the time on Linux platform, to create code and debug everything in vim on Linux and only when neccessary open Visual Studio with Windows forms and similar things and test the things that weren't possible to test in Linux environment?
I would see the work in creating small peaces of code on Linux, testing them and then move it to MS platform and integrate to the whole system. How do you debug and test your code? The development will be probably in C# or C++. I can't imagine Visual Basic.
Please write here your experience, style of work, if this has sence or there are too many troubles and I should rather give up.
So the question is: How to develop applications that run on Windows with Linux tools, without touching Visual Studio and browsing with Windows file manager etc.
thank you
Not sure, if this will help you or not but there is a Vim Emulation layer for Visual Studio 2010 called VsVim.
Check out : http://visualstudiogallery.msdn.microsoft.com/59ca71b3-a4a3-46ca-8fe1-0e90e3f79329
If I were you I'd install MinGW or Cygwin on your windows machine and just use gvim/vim anyway (or maybe just use the Win32 vim).
VS is just a big editor. You'll be building with the microsoft compilers ( perhaps using msbuild or nmake ) but probably are going to have to accept that you can only debug windows things with VS ( unless you build for MinGW or Cygwin and use gcc and gdb)
You can use vim as a code editor, you can even stick on Linux when developing software for the .NET platform. The people behind the Mono make this happen. Mono is a software platform designed to allow developers to easily create cross platform applications. It is an open source implementation of Microsoft's .Net Framework based on the ECMA standards for C# and the Common Language Runtime.
You can stick to the editor of your liking and use the tools that come with Mono to compile your stuff. There is a IDE called Mono Develop, but compared to Visual Studio it is pretty basic... and compared to VIM it lacks simplicity.
C# projects are plain text files so it's easy enough to edit them over an SMB share in whatever editor you wish from anywhere the sysadmins let you.
Testing however will be difficult without going back to the windows machine, and while Mono implements the framework, it's still a different environment if you're targeting Windows.