I majorly work in Java but I have to switch to C++ for development for one project.
I done my research and find that in order to do portable code in C++, I need to use Boost or QT libraries etc. Therefore, now I download CodeBlock IDE in Ubuntu but afraid how to start building project. I search alot in the web to how to use Boost with CodeBlock but each time I only find it working/configure with Windows. http://wiki.codeblocks.org/index.php?title=BoostWindowsQuickRef
Can please guide me regarding how to configure Boost library with CodeBlock in Ubuntu so that I can write Portable code.
Please also let me know if I am wrong in direction to write portable code which must be support in both Linux and Windows environment.
Have a look at http://www.boost.org/doc/libs/1_52_0/more/getting_started/unix-variants.html
If you dont't need the latest version of boost you should install boost on ubuntu using
apt-get install libboost*
Related
I'm going to teach students to use SFML with C++, and I'm afraid the school doesn't have visual studio C++ installed, or will be a bit heavy to use for those students.
I want to have a plan B and have the option of a simple makefile that I can build on windows with SFML.
https://www.sfml-dev.org/download/sfml/2.5.1/ this page offers binaries compiled with different, specific versions of mingw with their respective mingw package links, unfortunately mingw doesn't include an unix terminal, like the one included with git-bash, so I can run a makefile.
What are the steps required to have a problem unix terminal, running in windows, minsys, msys2 or not, that can work well with those mingw packages? I have trouble finding help or proper instructions.
You want https://www.msys2.org/
It provides bash terminal and already contains mingw compiler. Perhaps it even has SFML packages already.
I am trying to use boost library on Python. In C++ I include boost\python.hpp but it says it cannot open pyconfig.h. How should I do that? I have a Mac with Parallels installed and my C++ code is in Visual Studio on Parallels. I installed homebrew and boost from the terminal, I already had boost on the Parallels side which I have used different times in C++. In short, I did a mess. How can I fix this?
Thanks!!
You need to find pyconfig.h on your machine, then add its directory to your build like -I/some/path. Often it will be in a directory called python3.7 or whatever version you have.
I regularly use Code::Blocks and MinGW for my C/C++ projects. I would like to be able to use OpenCV, since it has a nice library for computer vision projects. They have dropped support for MinGW. I have heard you can build it on your own somehow, but I have no experience doing this with 3rd party libraries. Can someone explain how to build it in a simple way for MinGW?
There is, or at least there was at least until 2.4.6, precompiled version of opencv that works out of the box with mingw as long as you use the dw2(standard) version of mingw.
since i needed sjlj support i had to build my own version of openCV 2.4.6
I did he following - i am pretty sure it will work for the current openCV version as well
Setup your preferred Mingw Environment - i would strongly recommend to use gcc 4.5 or newer
Intstall Msys
Intall Cmake - you can get a binary package
Start the Cmake GUI
Select the openCV source folder
Click Configure and select MSYS-Makfiles
Errors in the first run of Configure might be resolved if you run Configure again
Click Generate
use MSYS make to run the generated makefile
Copy all desired libraries and include files to your mingw-installation or your project
My goal is to hop on to C++ programming language by doing a homework project on linux mint and learn some linux & c++ at the same time.
I intend to write a small desktop application to show current network traffic ( like DU meter in windows). I have following questions:
I noticed in mint there is an application called 'System Monitor' which also shows network history with info and graph like current download/upload of data and speed. Is it a good idea to get started by looking at the code for this ? how can I find the code for same in mint and dig into it ? pls help with some steps here if possible.
what tools do I need here for writing c++ application for/in linux mint ?
Which GUI library to use ( like in c# winforms , it offers user controls as part of GDI lib) on linux mint what do we have that offers user controls like window/button/panel/etc ?
Links to beginner level tutorials will be helpful.
Hoping NOT to re-invent the wheel completely here. Would love to re-use some lib that do the network traffic part, ideas ?
PS: i know this post reads 'wanna be' - I am really excited to kickstart with some c++. Will rephrase this post with more precise questions.Hunting in the dark at this point being a c# developer totally spoiled by windows.
Thanks in Advance!!! for tips on this...
The mint distribution is based on Ubuntu/Debian, so I assume that my Ubuntu approach also works on mint.
First
you need some tools, libraries and headers:
# install the standard toolchain (g++, make, etc.)
sudo aptitude install build-essential
# install the build dependencies for a desktop based networking tool
sudo aptitude build-dep gnome-nettool
Optionally
because you mentioned the system-monitor - it might be helpful to build the gnome-system-monitor from source:
# install the build dependencies for gnome-system-monitor
sudo aptitude build-dep gnome-system-monitor
# get the sources for the gnome-system-monitor
mkdir example
cd example
apt-get source gnome-system-monitor
# build the gnome-system-monitor
# note: you might have a different version. But I'm sure you get the idea ;-)
cd gnome-system-monitor-2.28.0
sh configure
make
Finally
you need something to develop and debug. A lot of unix developers recommend emacs or vi(m). But my personal opinion is that you should start with a "modern" GUI based IDE.
here's a collection of some commonly used IDEs:
Eclipse with CDT
NetBeans
Code::Blocks
Anjuta (was this used to develop the gnome-system-monitor ?)
CodeLite (which is my personal favorite)
see also: discussion on SOF regarding "the best" C++ IDE for Linux
People usually use text editors like (g)Vim or emacs to write C++ applications. If you've never seen them before they may be a bit overwhelming. You can also use IDEs like Geany, Anjuta, QtCreator, Eclipse...
I think the default desktop environment in Mint is GNOME which uses the GTK library. You could use GTK for your application. It is written in C but there is a c++ interface for it, gtkmm, and a tutorial for it on the projects site.
There is also Qt, which is the base of the K Desktop Environment or KDE. It is a very large library and has a pretty good IDE written in it, for it, QtCreator.
Finally, you should search stackoverflow because most of your questions have already been answered.
In answer to you "what tools do I need", you should at a minimum install g++, the standard C++ compiler on a GNU/Linux system.
Linux Mint is based on Ubuntu (which is in turn based on Debian), so for a binary like gnome-system-monitor, the command
apt-get source $(dpkg -S $(which gnome-system-monitor) | cut -d: -f1)
will download and unpack the source package for it in the current directory. Note that it probably depends on a number of libraries, that can be found in different packages. You can see what these are with apt-cache show package_name, and libraries often have associated development packages named with -dev that contain the associated headers and statically-linked archives. You can find the dev package names by searching using apt-cache search foo, where foo is the base name of the library package you're interested in.
I am new to both Qt and Linux C++ development (although I have many years C and C++ development experience on Windows).
I have some legacy C projects (source files and headers - [not using Qt]) that I want to compile into shared libs on Linux.
I am proposing to store my projects under the following structure:
/home/username/Projects/project_name
/home/username/Projects/project_name/src
/home/username/Projects/project_name/build
Can anyone tell me how to do the following (using Qt to simplify the build process)
Create different build configurations (debug, release etc)
Build a configuration to create the appropriate shared library
As an aside, I have only recently installed Ubuntu 9.10 and the only C/C++ development tool I have installed (using SPM) in Qt - so I dont know if I need to install some other GNU C++ tools.
BTW I have already checked and have gcc (v4.4.1) available on my machine. I do not appear to have g++ though - I do not know whether this is significant or not.
An Ubuntu system doesn't come with build tool chain by default. Instead it has a meta package that you will need to install:
sudo apt-get install build-essential
This will install, among other the g++ compiler, although I am not sure about the Qt headers an such. For them you will need the qt4-dev package (I assume you wish to work with qt4 rather then qt3).
As for the bould structure, you will want to consult the qmake manual, or you might want to consider using CMake (apt-get install cmake) instead. CMake allow for out of build sources, as you require, and personally, I can't recommend it enough.