The Linux Development Platform Configuring, Using, and ... - Classes

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CH01.fm Page 14 Friday, October 4, 2002 3:06 PM 14 Chapter 1 • Introduction to Software Development There may be other factors as well and you are the best person to judge what you need. However, keep in mind that reliability of hardware is one major factor that people usually overlook. If you buy cheap systems that decrease productivity of developers, you lose a lot of money. 1.4 Selection Criteria for Software Development Tools After selecting the hardware, software development tools are the next major initial expense in terms of money and time to set these up. Selection of software development tools depends upon the choice of hardware and operating system. In many cases GNU tools are very well suited. Selection of development tools also has a major effect on the productivity of the whole development team. 1.5 Managing Development Process In large software development projects, management of the development process is a big task and a dedicated person may be needed to take care of this aspect of the project. A development manager usually acts as a binding and coordinating force among different parties with conflicting interests. These parties include: • Marketing and sales people who put forward requirements, change requirements and come up with new requirements, usually when much of the work is already done! • Architecture and design people. • Software developers who always think that they always have less amount of time. • Release management people. • Software testers. • Documentation writers. • Senior managers who often push to complete the project earlier than the deadline. Coordinating all of these parties is not an easy task. The manager has to convince senior management that a new feature needs that much time for development. At the same time he has to push developers to meet the deadlines. Some of the important tasks of software management in a real-life project are as follows. 1.5.1 Creating Deadlines The manager usually coordinates with the software developers to set reasonable deadlines for certain features. These deadlines must conform to the product delivery time lines. The manager may have to arrange additional resources to complete feature development in the allotted time. Project management software can help a manager to set and meet deadlines and track completion of different components.
CH01.fm Page 15 Friday, October 4, 2002 3:06 PM Linux Development Platform Specifications (LDPS) and Linux Standard Base (LSB) 15 1.5.2 Managing the Development Team The manager has to keep track of how development among different parts of the software is going on. If part of the product is behind schedule, she has to re-arrange resources to get it back on track.. She may also need to hire new people to finish the development of a particular component on schedule. 1.5.3 Resolving Dependencies Usually software components are dependent on one another. If the development of one component is lagging behind, it may affect development of other components. The development manager needs to keep an eye on these dependencies and how these may affect the overall progress of the project. Well-known project management methods are usually helpful for this task. 1.6 Linux Development Platform Specifications (LDPS) and Linux Standard Base (LSB) Linux Development Platform Specifications or LDPS was an effort to design a common specification so that programs developed on one Linux distribution could be easily ported to other distributions. The specifications define components and packages that must be present on Linux development workstations. The latest version of the specifications at the time of writing this book is available at http://www.freestandards.org/ldps/1.1/ldps-1.1.html web site. Linux Standard Base or LSB (http://www.linuxbase.org) is the new forum to standardize Linux distributions. LSB specifications 1.1.0 is available at the time of writing this book. LSB compliant applications can run on any LSB compliant distribution without any modification or recompilation process. Specifications are detailed and the latest version can be found at http:// www.linuxbase.org/spec/. 1.6.1 Libraries The following libraries will be available on LSB compliant systems. While developing applications for Linux, the developer can assume presence of these libraries on target machines, provided the target is LSB compliant. • libX11 • libXt • libGL • libXext • libICE • libSM • libdl • libcrypt
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