I have QT 5.2 installed on Ubuntu 12.04. I did not build it, but simply downloaded and unzipped from the QT website. My question is how can we package the required libs along with the executable for deployment? The QT documentation says that we should build QT for static linking, but the "configure" file is missing in the QT directory.
Thanks in advance.
Ok. So I finally managed to deploy my Qt app along with its dependencies after countless hours of googling. This was done on Ubuntu 12.04 with Qt 5.2.
This is how I did it:
Statically build Qt from the source using the following command :
./configure -opensource -confirm-license -prefix ./qtbase -make libs -make tools -release -opengl desktop -static -skip qtwebkit -no-icu -nomake tests -nomake examples
make -j -4
You can download the source from http://download.qt-project.org/official_releases/qt/5.2/5.2.1/single/qt-everywhere-opensource-src-5.2.1.tar.gz
You cannot static build the installer version of Qt.
Open your Qt project and rebuild it. The Qt dependencies will be built into the app executable. Check with ldd to see if it was done correctly.
ldd ./<app_executable>
Now when you try to run this on a system without Qt it might ask for other third party dependencies which you see with ldd. Eg: libxcb-...
You could either install these dependencies with apt-get on the target system or supply the libs with your app. That is: put the required .so files and their soft links into a directory named libs along with your executable.
After the lib dependency problems are fixed the App will give an error about missing Qt fonts. Easiest way to fix this is to supply the Qt fonts folder along with the app.
This link gives a good way of doing this:
http://goblincoding.com/2013/11/07/deploying-qt-5-applications-on-ubuntu-12-04/
The summary of the above page is that you need to supply a small bash script to run your app. the script should be as follows:
#~/bin/bash
export LD_LIBRARY_PATH=./libs
export QT_QPA_FONTDIR=./fonts
./<app_executable>
The target system will now find the libs and the fonts from the directories you supplied and will run without issues. Hope this helped.
NOTE: I haven't tried, but this script method should work even if you are supplying the Qt libs as well without statically building the qt source.
Related
Question:
Is there a way to install a downloaded NBM (Netbeans Module) into an already installed Netbeans IDE via CLI?
Current setup
Netbeans 12.3 with Windows 10
Netbeans 12.3 with Linux Mint 20.1
Relevant scenario
If the question comes to your mind 'why aren't you just using the GUI?' or anything like that. Think of the following scenario. When working on an air gapped network with 50 computers you're the one having to install Netbeans plugins on all of that PCs. You're able to put files on those PCs and execute a command via console and you don't want to run around all the buildings and clicking through the process.
Thank you very much in advance.
I think I found a solution. I'll post it here to reflect my research because I've never found a answer on stackoverflow.
When Netbeans is already installed you can use the --help parameter like:
C:\Program Files\NetBeans\netbeans\bin\netbeans64.exe --help
This lists lot of available parameters (which I haven't found a list of on the web) like (shortened):
General options:
--help show this help
--jdkhome <path> path to JDK
--console new open new console for output
Module reload options:
--reload /path/to/module.jar install or reinstall a module JAR file
Additional module options:
--modules
--refresh Refresh all catalogs
--list Prints the list of all modules, their versions and enablement status
--install <arg1>...<argN> Installs provided JAR files as modules
--disable <arg1>...<argN> Disable modules for specified codebase names
--enable <arg1>...<argN> Enable modules for specified codebase names
--update <arg1>...<argN> Updates all or specified modules
--update-all Updates all modules
Core options:
--fontsize <size> set the base font size of the user interface, in points
--userdir <path> use specified directory to store user settings
--nosplash do not show the splash screen
In my case the solution was to use the --install parameter pointing to the jar file to install.Be aware that the NBM files are just containers containing the jar file and some more meta data files like config xml files. You're able to open it via 7zip for example. And you'll have to take care of all the dependencies yourself.
I have some trouble when I want to add a database.
_dataBase = QSqlDatabase::addDatabase("QPSQL");
After calling this method I have an error:
QSqlDatabase: QPSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
I include to PATH variable paths to:
PostgreSQL\9.3\bin
PostgreSQL\9.3\lib
PostgreSQL\9.3\include
Also I copy folder sqldrivers to Debug folder. Also tried to copy dlls drom this folder to Debug. Doesn't work either.
I came here googling because I had the same problem in Windows.
In my case to solve the issue I had to install PostgreSQL for Windows 32 bits since my Qt target was MinGW 32 bits.
Additionally, I had to add the PATH to the PostgreSQL bin and lib directories so Qt could find the right .dlls.
#SET PATH=C:\Program Files (x86)\PostgreSQL\9.6\bin\;C:\Program Files (x86)\PostgreSQL\9.6\lib\;%PATH%
The PATH can be set before launching Qt Creator or using the Qt Creator itself via the Build Environment in the Projects pane.
Add the system variable QT_DEBUG_PLUGINS=1 if you want to get full information of why the QPSQL driver has not been loaded.
Probably you will discover that Qt is not able to find it. Copy and paste the output here to know what exactly happens.
Use depends.exe on qsqlpsql.dll and found that this dll need libpq.dll from PostgreSQL\9.3\libfolder. Add libpq.dll to Debug folder and it works:)
Try pip install PyQt5 event if you already installed it using conda or installer. It helped me.
I got same problem with deploying Qt application (windeployqt didn't help). I had to copy more .dlls (libcrypto-1_1-x64.dll, libiconv-2.dll, libintl-8.dll, libpq.dll, libssl-1_1-x64.dll, libwinpthread-1.dll) from postgreSQL bin path (c:\Program Files\PostgreSQL\12\bin) next to .exe file (according to dependency walker).
I'm trying to debug an open source package, called libprotoident in Eclipse, Kepler version, within Debian. As it has the Makefile, I choose to make an empty Makefile project, and then add all the sources into the workspace. So after that the source compiled and run successfully as in the command line using the Makefile.
As it has 4 apps you can use, I choose to run lpi_protoident package in the run configuration window, as the following image shown.
So the Program ran successfully. Now I'm trying to debug it but it generates the following error.
How can I solve this error and debug the Project?
The file you are trying to debug is most likely a shell script created by automake that acts as a wrapper around the real executable, which has been built in a hidden directory.
Instead of telling Eclipse that tools/protoident/lpi_protoident is your application, try using tools/protoident/.libs/lpi_protoident instead.
General Answer about the error you are getting
What not in executable format: File format not reconized error means is that lpi_protoident is not an executable on the platform you are working on.
Are you sure that is an executable you can run (E.g. from the command line)?
There is also the small chance that the GDB you are using is somehow incompatible with the executable, but that is less likely.
Building libprotoident from source
(Assuming you are trying to build https://github.com/wanduow/libprotoident)
You are trying to build an automake project. The normal way to do that is by configuring to create Makefile, you shouldn't be making your own makefile. Please refer to the README in the project, but the key parts you need to do are:
Installation
After having installed the required libraries, running the following series of commands should install libprotoident
./bootstrap.sh (only if you've cloned the source from GitHub)
./configure
make
make install
By default, libprotoident installs to /usr/local - this can be changed
by appending the --prefix= option to ./configure.
The libprotoident tools are built by default - this can be changed by
using the
--with-tools=no option with ./configure.
I've recently started using the Eclipse IDE for web development.
In the past when I've used Scout to complie my Sass.
Is there a way in Eclispe to automatically compile my Sass.
Is this the best option - http://www.only10types.com/2012/02/get-eclipse-to-automatically-compile.html
I've tried this but I get a BUILD FAILED becuase of
<apply dest="css" executable="/var/lib/gems/1.9.1/bin/sass">
I realise that executable needs to point to sass on my system but how do I find where sass is on my system?
I posted about this recently here: http://mikekelly.myblog.arts.ac.uk/2015/02/09/sass-with-eclipse-in-os-x/
My post refers to OS X but it should be easy enough to adapt the process to other setups.
Here's the text from my post:
Preparation
1. Make sure Ruby is installed. You’re going to need this as SASS is a ruby app. OS X should have Ruby installed by default. To check, open a terminal window and enter:
ruby -v
This should display the version information, something like:
ruby 2.0.0p481 (2014-05-08 revision 45883) [universal.x86_64-darwin14]
If you don’t have Ruby, install it now. Come back once you’ve figured it out.
If you develop using Ruby at times, you are likely to be using RVM to manage different Ruby versions. If you’re using RVM we need to take some precautions. Don’t worry – we don’t need to get rid of RVM. We just need to make sure we install SASS to the system version of Ruby.
Let’s check to see if we have RVM installed:
rvm -v
If we get version information back, then we have RVM. (If we don’t we can just move on to step 2 below.) Let’s see which versions of Ruby we have installed:
rvm list
This should show you a list of Ruby versions, along with info. about which one is the default and which is the current version. We want to install SASS to the OS X default version of Ruby, not the RVM-installed versions, so enter this:
rvm use system
And now check again on our current Ruby version:
ruby -v
OK, if we’re happy that we have Ruby and that we’re using the OS X default Ruby, let’s proceed.
2. Install SASS
Do we have SASS?
sass -v
If that doesn’t return version information, you will need to install SASS:
gem install sass
If you get permission errors, use sudo:
sudo gem install sass
Once you have installed SASS, let’s check on its location:
which sass
That should return:
/usr/bin/sass
If a different path was returned, look again at the information above about RVM.
OK, now that we have SASS installed in the OS X default version of Ruby, we can now switch back to a different version of Ruby via RVM, if required.
Set up a Builder in your Eclipse project
In Eclipse, we’re going to use a Builder to set up SASS auto-compilation.
Ctrl-click on the title of your project in the Explorer view (I’m working on a PHP project in this case, so I’m using the PHP Explorer view.)
Select Properties.
Click on Builders, then on New… to make a new Builder.
Select the Program option and click OK.
Now we can give our Builder a name, e.g. sass.compiler
In the Main tab we need to put in the path to the installed sass application:
/usr/bin/sass
N.B. If you were using SASS with an RVM-installed Ruby, at this point you might have tried putting in something like:
/Users/myusername/.rvm/gems/ruby-2.1.5/bin/sass
However that gives problems as SASS then tries to find required resources but they're not in the path, and so the operation fails with the error:
sass env: ruby_executable_hooks: No such file or director
Hence the need to install SASS into the OS X default version of Ruby.
Now we need to pass the appropriate arguments to SASS, so that it knows what to do and what files to do it with. If we were running SASS from the command line, we would probably do something like this at the start of our development session:
sass --watch sourcefolder:destinationfolder
In a real project that might look something like this:
sass --watch app/sass:public/stylesheets
This is a one-off command which forces compilation of any scss files in app/sass, into css files in public/stylesheets, whenever changes are made to the scss files. However, we want our Builder to trigger the compile process each time we save our scss files, so --watch is inappropriate.
If we enter:
sass --help
we discover that the option we want is --update. Luckily this works just like --watch in that it checks the designated folder recursively – so if we have many folders with scss files, we just specify a common parent folder.
You may have some scss files which you want to include into other scss files, and should not be compiled into their own css files. If that is the case, rename those files with an underscore at the beginning, e.g. rename mixins.scss to _mixins.scss Sass will still recognise those files for inclusion, but won’t compile css equivalents.
In my Arguments field I have this:
--update ${workspace_loc:/project1/htdocs/theme}:${workspace_loc:/project1/htdocs/theme} --sourcemap=none --style compressed
In my case, the scss files are in the same folder as the compiled css files, so my source folder and destination folder are the same. I used the Browse Workspace button in one of the form fields to generate the ${workspace_loc} placeholder values for my source folders and destination folders.
I also added a few more SASS options – one to turn off the generation of .map files, the other to output css in a compressed style.
Under the Build Options tab I have Allocate Console and During auto builds ticked, but nothing else.
Click on OK to finish.
Now, when I edit one of the scss files in my project1/htdocs/theme folder, in the Eclipse console view I see that SASS is doing its work, compiling the scss into css. Success!
Alternative method
Use Webstorm ; )
An easy solution would be to use Eclipse Wild Web Developer:
https://github.com/eclipse/wildwebdeveloper#-get-it-now
The editor will simplify developing with web technologies. Besides automatically compiling SCSS files to CSS files it provides many more features. Check them out, I think you will like them.
I had developed a small program in netbeans using c++. I need to know how can i deploy/run the package on another linux system
Abdul Khaliq
I have seen your code, you probably missing XML files in the current folder... where the executable is located... paste then and then run as ./your-executable
I recommend that you use a makefile to recompile on your target machine which will ensure that your program is deployed properly.
You should use a makefile as suggested. I know that NetBeans can generate one, but it's been a while since I last did so. Maybe this can help: http://forums.netbeans.org/topic3071.html
Typically, once compiled, your executable will need several libraries. Chance is that those libraries will also be available on the target linux system.
Thus, you can simply copy your executable over to the other system. If you run ldd on your executable, you should see the list of libraries your executable is dynamically loading. Those libraries should be available on the target system as well.
In case your executable makes use of resources such as images and other binary files, you can use a resource system (e.g. Qt Resource System) and compile those binary files into your executable.
The easiest way to test is to do the copy, run
ldd yourExecutable
on the target system. It will tell you if you are missing any library. Install those libraries using the system package manager.
Of course, you also have the option to statically build all libraries into your executable. However, this is not recommended since it makes the executable too large and complicates matters.
What type of package is your netbeans compiler creating? deb,rpm? If you are moving the package to a different linux install you will need to use that distributions package type. Ubuntu - deb
Fedora/Redhat - rpm
etc...
I'm not sure how you change this in netbeans but I'm pretty sure it has the ability to. A google search could help you more.