标准库（LSB）.第1-5部分:成像规范

[中文适用范围]： Linux 标准库 (LSB) 定义了已编译应用程序的系统接口以及支持安装脚本的最小环境。其目的是为符合 LSB 的大容量应用程序提供统一的行业标准环境。这些规范由两个基本部分组成：一个通用部分，描述接口中在所有 LSB 实现中保持不变的部分；以及一个特定于体系结构的部分，描述接口中因处理器体系结构而异的部分。通用部分和针对单个硬件体系结构的相关特定于体系结构的部分共同为在共享通用硬件体系结构的系统上运行已编译应用程序提供了完整的接口规范。LSB 包含一组应用程序接口 (API) 和应用程序二进制接口 (ABI)。API 可能出现在可移植应用程序的源代码中，而该应用程序的编译二进制文件可能使用更大的 ABI 集。符合 LSB 的实现提供了此处列出的所有 ABI。编译系统可以用对一个或多个底层二进制接口的调用替换（例如通过宏定义），并且可以根据需要插入对二进制接口的调用。 LSB 主要是一个二进制接口定义。并非所有应用程序可用的源码级 API 都包含在本规范中。 [外文原描述]： This document defines a system interface for compiled applications and a minimal environment for support of installation scripts. Its purpose is to enable a uniform industry standard environment for high-volume applications conforming to the LSB. These specifications are composed of two basic parts: a common part describing those parts of the interface that remain constant across all implementations of the LSB, and an architecture-specific part describing the parts of the interface that vary by processor architecture. Together, the common part and the relevant architecture-specific part for a single hardware architecture provide a complete interface specification for compiled application programs on systems that share a common hardware architecture. The LSB contains both a set of Application Program Interfaces (APIs) and Application Binary Interfaces (ABIs). APIs may appear in the source code of portable applications, while the compiled binary of that application may use the larger set of ABIs. A conforming implementation provides all of the ABIs listed here. The compilation system may replace (e.g. by macro definition) certain APIs with calls to one or more of the underlying binary interfaces, and may insert calls to binary interfaces as needed. The LSB is primarily a binary interface definition. Not all of the source level APIs available to applications may be contained in this specification. This is the Imaging module of the Linux Standard Base (LSB). This module provides the fundamental system interfaces, libraries, and runtime environment upon which conforming applications and libraries requiring the LSB Imaging module depend. Interfaces described in LSB Imaging are mandatory except where explicitly listed otherwise. Interfaces described in the LSB Imaging module supplement those described in the LSB Core module. They do not depend on other LSB modules.