free barcode generator in asp net c# Unpacking the Source Tarball and Solving Dependencies in Font

Encode Code 3/9 in Font Unpacking the Source Tarball and Solving Dependencies

Unpacking the Source Tarball and Solving Dependencies
Code 39 Extended Generation In None
Using Barcode generation for Font Control to generate, create USS Code 39 image in Font applications.
www.OnBarcode.com
Encoding Universal Product Code Version A In None
Using Barcode maker for Font Control to generate, create Universal Product Code version A image in Font applications.
www.OnBarcode.com
Let s take a look at installing a program from source. You usually download the application s source code package from the developer s site on the web. The name of the package will reference the application name and version number, for instance: applicationx-2.0.4.tar.gz. The .tar.gz extension (or .tgz in some cases) is because of the fact that source code files comes in a packaged and zipped file. The first thing you have to do is to unpack it. From the command line go to the directory where you saved your .tar.gz file (if you downloaded it using Firefox, it will probably be in your Downloads folder), and run the following command (with the appropriate filename of course): tar xzvf applicationx-2.0.4.tar.gz This will create a subdirectory named application-2.0.4. Move to it with the following command: cd applicationx-2.0.4
PDF417 Generator In None
Using Barcode generator for Font Control to generate, create PDF-417 2d barcode image in Font applications.
www.OnBarcode.com
Drawing Barcode In None
Using Barcode creator for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
CHAPTER 20 INSTALLING AND REMOVING SOFTWARE
Data Matrix ECC200 Printer In None
Using Barcode generator for Font Control to generate, create DataMatrix image in Font applications.
www.OnBarcode.com
Code 128C Drawer In None
Using Barcode printer for Font Control to generate, create Code 128B image in Font applications.
www.OnBarcode.com
In this folder you should find a file named either README or INSTALL. Read it very carefully to check for dependencies or other useful information. less README If you find that the software has any dependencies, you can install the required packages by using either the Synaptic Package Manager or the Ubuntu Software Center.
UCC-128 Printer In None
Using Barcode maker for Font Control to generate, create UCC.EAN - 128 image in Font applications.
www.OnBarcode.com
Generating ISBN - 10 In None
Using Barcode drawer for Font Control to generate, create ISBN - 13 image in Font applications.
www.OnBarcode.com
Note Unlike binary packages, source code is rarely designed with one specific Linux distribution in mind or even with Linux in mind! With a little work, it might even be possible to compile it under Windows!
Create Code 39 Full ASCII In VS .NET
Using Barcode encoder for VS .NET Control to generate, create Code39 image in VS .NET applications.
www.OnBarcode.com
Encode USS Code 39 In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create Code 39 image in ASP.NET applications.
www.OnBarcode.com
Compiling
Painting ANSI/AIM Code 128 In Java
Using Barcode generator for Android Control to generate, create Code 128B image in Android applications.
www.OnBarcode.com
Make GS1-128 In VB.NET
Using Barcode creator for VS .NET Control to generate, create EAN128 image in VS .NET applications.
www.OnBarcode.com
Now comes the exciting process of compiling the program! This is a three-step process, with three commands that you have to execute in sequence: ./configure The first command starts the configure script, created by the application s programmer, which checks your system to ensure that it meets the requirements. In other words, it checks to make sure the dependencies are present. It also checks to make sure you have the correct software that s required to actually compile a program, such as GCC and make. It s when the configure script is running that something is most likely to go wrong. In that case, more often than not, the error message will tell you that you re missing a dependency, which you must then resolve.
GTIN - 128 Creation In Visual C#.NET
Using Barcode printer for .NET Control to generate, create GTIN - 128 image in VS .NET applications.
www.OnBarcode.com
Drawing QR Code In Objective-C
Using Barcode generation for iPhone Control to generate, create Quick Response Code image in iPhone applications.
www.OnBarcode.com
Note Some configure scripts are very thorough and check for components that the program you re trying to install might not even need because, for example, they may just be alternative packages for doing the same job. Because of this, you shouldn t worry if, as the text scrolls past, you see that various components are missing. Unless configure complains about it when it has finished, it s not a problem.
PDF417 Creator In .NET
Using Barcode maker for .NET framework Control to generate, create PDF417 image in .NET applications.
www.OnBarcode.com
Painting Barcode In None
Using Barcode generation for Word Control to generate, create Barcode image in Office Word applications.
www.OnBarcode.com
make The next command, make, takes care of the actual program compilation. When you run this, the screen will fill with what might look like gibberish, but this is merely the output of the GNU compiler. It provides a lot of valuable information to those who know about such things, but you can largely ignore it. However, you should keep your eyes peeled for any error messages. It s possible that the configure script did not check your system thoroughly enough, and you might be missing an important system component in which case, make will halt.
ECC200 Printer In None
Using Barcode creation for Online Control to generate, create Data Matrix image in Online applications.
www.OnBarcode.com
PDF417 Generator In None
Using Barcode generator for Online Control to generate, create PDF417 image in Online applications.
www.OnBarcode.com
CHAPTER 20 INSTALLING AND REMOVING SOFTWARE
Barcode Creation In Objective-C
Using Barcode printer for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
Make UPC A In Java
Using Barcode printer for Android Control to generate, create UPCA image in Android applications.
www.OnBarcode.com
Note It is possible that both the make and the make install commands report error messages, but that the applications works after installation nonetheless. The moral of the story is that software compilation is something of a black art, with error messages designed for programmers, and not all error messages are fatal.
Alternatively, the program simply might not be able to compile on your system without some tweaking to the Makefile (the file that make uses). If such a situation arises, the best plan is to visit the web site of the developer of the software and see whether there s a forum you can post to. Alternatively, check if the developer has an e-mail address you can contact to ask for help. sudo make install Eventually, the compilation will stop with a number of exit messages. Then the final command must be run: make install. This needs to be run with superuser powers, because its job is to copy the binary files you ve just created to the relevant system directories. In addition, any documentation that comes with the program is also copied to the relevant location on your system. After the three commands have completed, you should be able to run the program by typing its name at the command prompt.
Note You ll probably need to add your own icon for the application to the desktop or Applications menu (see 9 for more details on the procedure to do this). Source packages are usually designed to be installed on any version of UNIX running a variety of desktop managers. In the past, it was difficult for the developer to know where to create desktop shortcuts, but now organizations like freedesktop.org (http://freedesktop.org) are standardizing the process.
Summary
This chapter described how to install software under Ubuntu. We looked at how this differs from Windows software installation, and how the Debian package management system is designed to make life easier. You learned how to use the Ubuntu Software Center and Synaptic Package Manager to install software from the official repositories, and how to use the different tools for more complex scenarios. Finally, you looked at how programs can be compiled from their source code, which is a fundamental process for all versions of Linux.
Copyright © OnBarcode.com . All rights reserved.