GNU Compiler Collection.ppt

GCC的演变 GCC发展和技术特点 编译器结构介绍 GCC组织结构 演示 GCC源码结构 调试GCC 提纲 GCC The GNU Compiler Collection (usually shortened to GCC) is a set of programming language compilers produced by the GNU Project. It is free software distributed by the Free Software Foundation (FSF) under the GNU GPL and GNU LGPL, and is a key component of the GNU toolchain. It is the standard compiler for the free software Unix-like operating systems, and several proprietary operating systems, notably Apple Mac OS X. GCC 的演变 GNU, FSF, Richard Stallman The GNU Project was launched in 1984 to develop a complete Unix-like operating system which is free software: the GNU system. (GNU is a recursive acronym for “GNUs Not Unix”; it is pronounced “guh-NEW”.) GPL(GNU GENERAL PUBLIC LICENSE), CopyLeft and Copyright The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software—to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundations software and to any other program whose authors commit to using it. GCC and Linux GCC编译器 狭义：CC1 (C代码编译阶段，源代码-汇编代码)? 广义：GCC源代码包中所有内容(源代码-可执行码)? Linux: 狭义：Linux kernel ()? 广义：采用Linux kernel的整个OS Variants of the GNU operating system, which use the kernel Linux, are now widely used; though these systems are often referred to as “Linux”, they are more accurately called GNU/Linux systems. GCC and Linux Linux kernel 及相关软件包的标准编译工具 运行时库，glibc Linux系统：kernel+directory tree structure+glibc+utilities+... GCC 技术发展 1984，FSF建立，GNU Project：开放系统支撑软件 1985，GCC项目启动 1987，GCC 1.0 release, C compiler. The first portable ANSI C optimizing compiler released as free software. 1991，Linux 项目开始发布. 1992，GCC2.0 release, C/C++. 1994，Linux 1.0 release. 1997，EGCS (Experimental/Enhanced GNU Compiler System). Architecture Related Optimization and C++ support 2001，GCC3.0 release, EGCS Merged, Multi langu