I have a .Net Core application which is to run on Ubuntu. With it I'm looking to distribute 2 .so files that the application depends upon. The app would load those libraries via a [DllImport("mylibrary")] attribute.
If I try to run my application as-is, it complains that it cannot find mylibrary. This is because the library doesn't exist in the search path. If I install the libraries via apt-get instead of distributing them, everything works (the libraries end up in /usr/lib/x86_64-linux-gnu/ which is part of my search path for libraries).
This isn't a very scalable solution. I want something that just "works" when running dotnet myapplication.dll without having to pre-install via apt-get (or otherwise) my .so files.
How can I get the library loader to work with my local .so files without requiring some extra step by the end user before running my application?
The idea of having the .Net Core application running some installation / bash commands upon startup to setup the environment sounded like a decent idea except it requires sudo. This isn't a deal-killer, but isn't terribly clean either.
Any ideas?
So some background, I'm installing Node on a host server, but it's a grid server not a server that's solely for my website.
The grid server doesn't have a root user/ administrative powers. So to install node I found this workaround: http://iantearle.com/blog/media-temple-grid-and-nodejs . It's a Linux Grid server, I've never used Linux so if someone could explain to me what the commands mean, especially: ./configure --prefix=~/opt/
Lastly I followed the steps but when I try to run the node command in the server it says node:command not found - which is why I'm trying to understand the steps. Thanks
To explain the process:
Configure
The configure script is responsible for getting ready to build the software on your specific system. It makes sure all of the dependencies for the rest of the build and install process are available, and finds out whatever it needs to know to use those dependencies.
Unix programs are often written in C, so we’ll usually need a C compiler to build them. In these cases the configure script will establish that your system does indeed have a C compiler, and find out what it’s called and where to find it.
Make
Once configure has done its job, we can invoke make to build the software. This runs a series of tasks defined in a Makefile to build the finished program from its source code.
The tarball you download usually doesn’t include a finished Makefile. Instead it comes with a template called Makefile.in and the configure script produces a customised Makefile specific to your system.
3.Make Install
Now that the software is built and ready to run, the files can be copied to their final destinations. The make install command will copy the built program, and its libraries and documentation, to the correct locations.
--prefix=~/opt/ -> will set the build directory to /home/yourhome/opt directory.
Now if you didnt get errors while doing those 3 steps explained above make sure you did the following:
nano ~/.bash_profile
export PATH=~/opt/bin:${PATH}
nano is a text editor and you are opening .bash_profile file with it.
you need to add export PATH=~/opt/bin:${PATH} in that file and save it using ctrl+x
Then restart your terminal.
Specified github repository for nodejs is outdated. use the following link instead.
git clone https://github.com/nodejs/node.git
P.S node:command not found usually happens when the program is not installed correctly or it's executable isnt in your terminal's PATH variable.
I'm new to node webkit and I'm confused about the packaging steps. I just compressed the whole files including the webkit files to make package.zip file. I just copied it to another machine and unzipped it. The nw executable file is not executable there. Its not doing anything when I clicked on it. My concern is
Will the user be able to use the package by just double clicking on the package provided. Or should he need to unzip the package and execute ?
What are the steps to be followed to package the app ?
It's explained here https://github.com/nwjs/nw.js/wiki/How-to-package-and-distribute-your-apps
There is special tool to make packages: https://github.com/mllrsohn/node-webkit-builder
And here how I do in my project https://github.com/Paxa/postbird/blob/master/Rakefile
In short: This question is basically about telling Linux to load the development version of the .so file for executables in the dev directory and the installed .so file for others.
In long: Imagine a shared library, let's call it libasdf.so. And imagine the following directories:
/home/user/asdf/lib: libasdf.so
/home/user/asdf/test: ... perform_test
/opt/asdf/lib: libasdf.so
/home/user/jkl: ... use_asdf
In other words, you have a development directory for your library (/home/user/asdf) and you have an installed copy of its previous stable version (/opt/asdf) and some other programs using it (/home/user/jkl).
My question is, how can I tell Linux, to load /home/user/asdf/lib/libasdf.so when executing /home/user/asdf/test/perform_test and to load /opt/asdf/lib/libasdf.so when executing /home/user/jkl/use_asdf? Note that, even though I specify the directory by -L during link, Linux uses other methods (for example /ect/ld.so.conf and $LD_LIBRARY_PATH) to find the .so file.
The reason I need such a thing is that, of course the executables in the development directory need to link with the latest version of the library, while the other programs, would want to use the stable version.
Putting ../lib in the library path doesn't seem like a secure idea, not to mention not completely correct since you can't run the test from a different directory.
One solution I thought about is to have perform_test link with libasdf-dev.so and upon install, copy libasdf-dev.so as libasdf.so and have others link with that. This solution has one problem though. Imagine the following additional directory:
/home/user/asdf/tool: ... use_asdf_too
Which gets installed to:
/opt/asdf/bin: use_asdf_too
In my solution, it is unknown what use_asdf_too should be linked against. If linked against libasdf.so, it wouldn't work properly if invoked from the dev directory and if linked against libasdf-dev.so, it wouldn't work properly if invoked from the installed location.
What can I do? How is this managed by other people?
Installed shared objects usually don't just end with ".so". Usually they also include their soname, such as libadsf.so.42.1. The .so file for development is typically a symlink to a fully-versioned filename. The linker will look for the .so file and resolve it to the full filename, and the loader will then load the fully-versioned library instead.
This question already has answers here:
How to make exe files from a node.js app?
(20 answers)
Closed 7 years ago.
Supposed I have written a Node.js application, and I now would like to distribute it. Of course, I want to make it easy for the user, hence I do not want him to install Node.js, run npm install and then manually type node app.js.
What I'd prefer was a single executable file, e.g. an .exe file on Windows.
How could I approach this?
I am aware of this thread, anyway this is only about Windows. How could I achieve this in a platform-independent manner? Any ideas? Best practices? ...?
The perfect solution was a "compiler" I can give a source folder to. The source folder contains the app itself in various .js files, the node_modules folder and some metadata, such as the package.json. The output should be binaries for various platforms, such as Windows, OS X and Linux.
Oh, and what's important: I do not want to make any changes to the source code, so calls to require with relative paths should still work, even if this relative path is now inside the packaged app.
Any ideas?
PS: I do not want the user to install Node.js independently, it should be included inside the executable as well.
Meanwhile I have found the (for me) perfect solution: nexe, which creates a single executable from a Node.js application including all of its modules.
It's the next best thing to an ideal solution.
First, we're talking about packaging a Node.js app for workshops, demos, etc. where it can be handy to have an app "just running" without the need for the end user to care about installation and dependencies.
You can try the following setup:
Get your apps source code
npm install all dependencies (via package.json) to the local node_modules directory. It is important to perform this step on each platform you want to support separately, in case of binary dependencies.
Copy the Node.js binary – node.exe on Windows, (probably) /usr/local/bin/node on OS X/Linux to your project's root folder. On OS X/Linux you can find the location of the Node.js binary with which node.
For Windows:
Create a self extracting archive, 7zip_extra supports a way to execute a command right after extraction, see: http://www.msfn.org/board/topic/39048-how-to-make-a-7-zip-switchless-installer/.
For OS X/Linux:
You can use tools like makeself or unzipsfx (I don't know if this is compiled with CHEAP_SFX_AUTORUN defined by default).
These tools will extract the archive to a temporary directory, execute the given command (e.g. node app.js) and remove all files when finished.
Not to beat a dead horse, but the solution you're describing sounds a lot like Node-Webkit.
From the Git Page:
node-webkit is an app runtime based on Chromium and node.js. You can write native apps in HTML and JavaScript with node-webkit. It also lets you call Node.js modules directly from the DOM and enables a new way of writing native applications with all Web technologies.
These instructions specifically detail the creation of a single file app that a user can execute, and this portion describes the external dependencies.
I'm not sure if it's the exact solution, but it seems pretty close.
Hope it helps!
JXcore will allow you to turn any nodejs application into a single executable, including all dependencies, in either Windows, Linux, or Mac OS X.
Here is a link to the installer:
https://github.com/jxcore/jxcore-release
And here is a link to how to set it up:
http://jxcore.com/turn-node-applications-into-executables/
It is very easy to use and I have tested it in both Windows 8.1 and Ubuntu 14.04.
FYI: JXcore is a fork of NodeJS so it is 100% NodeJS compatible, with some extra features.
In addition to nexe, browserify can be used to bundle up all your dependencies as a single .js file. This does not bundle the actual node executable, just handles the javascript side. It too does not handle native modules. The command line options for pure node compilation would be browserify --output bundle.js --bare --dg false input.js.
There are a number of steps you have to go through to create an installer and it varies for each Operating System. For Example:
on Mac OS X you need to create a .pkg, there are instructions on how to do that here: https://coolaj86.com/articles/how-to-create-an-osx-pkg-installer.html
on Ubuntu Linux you need to create a .deb, there are instruction on how to do that here: https://coolaj86.com/articles/how-to-create-a-debian-installer.html
on Microsoft Windows you need to create a .exe or .msi, there are instruction on how do that using the innosetup installer here: https://coolaj86.com/articles/how-to-create-an-innosetup-installer.html
You could create a git repo and setup a link to the node git repo as a dependency. Then any user who clones the repo could also install node.
#git submodule [--quiet] add [-b branch] [-f|--force]
git submodule add /var/Node-repo.git common
You could easily package a script up to automatically clone the git repo you have hosted somewhere and "install" from one that one script file.
#!/bin/sh
#clone git repo
git clone your-repo.git