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The GNU Compiler Collection contains frontends for C, C++, Objective-C, Fortran, Java, and Ada as well as libraries for these languages. It is a full-featured ANSI C compiler with support for K&R C as well. GCC provides many levels of source code error checking traditionally provided by other tools (such as lint), produces debugging information, and can perform many different optimizations to the resulting object code.

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Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.

2011-11-19 11:59
4.6.2

此版本修复了超过 100 报告的问题。
标签: Stable, Major bugfixes
This release fixes over 100 reported problems.

2011-06-30 00:38
4.6.1

这是一个错误修复版本，包含回归和严重的错误修复了自上一个版本中修复了150错误。
标签: Stable, Major bugfixes, 4.6
This is a bug-fix release containing fixes for regressions and serious bugs, with over 150 bugs fixed since the previous release.

2011-03-29 06:12
4.6.0

几个处理器架构的支持是过时的，而增加了新的平台。一个新的一般优化级别，- Ofast，进行了介绍。可扩展整体规划设计优化（WHOPR）项目已经稳定到了被使用的问题。许多链接的时间和进程优化改进。在C语言家族，选择性地启用和禁用的警告，支持加入。对于C + +0 x是改善实验性支持，以及为在ISO C标准C1X修订​​。许多C + +的诊断得到了改善。许多其他改进。
标签: Stable, Major feature enhancements, Minor bugfixes
Support for several processor architectures was obsoleted, while new platforms were added. A new general optimization level, -Ofast, was introduced. The Scalable Whole Program Optimizer (WHOPR) project has stabilized to the point of being usable. Many link-time and interprocedural optimization improvements were made. In the C family of languages, support for selectively enabling and disabling warnings was added. The experimental support for C++0x was improved, as well as for the C1X revision of the ISO C standard. Many C++ diagnostics were improved. Many other improvements were made.

2010-08-17 18:32
4.5.1

新的链接时优化的LTO（“- flto”）现在也几个非ELF目标的支持，即Cygwin的（*- cygwin的*），MinGW的（*- MinGW的*），达尔文在x86 - 64（x86_64的，苹果达尔文*），虽然LTO是不启用默认为这些目标。许多小错误是固定的。
标签: Stable, Minor bugfixes, Minor feature enhancements
The new link-time optimizer LTO ("-flto") is now also supported on several non-ELF targets, namely Cygwin (*-cygwin*), MinGW (*-mingw*), and Darwin on x86-64 (x86_64-apple-darwin*), though LTO is not enabled by default for these targets. Numerous minor bugs were fixed.

2010-04-18 04:46
4.5.0

英特尔的Atom处理器的优化增加了，而对其他处理器支持增强。货币政策委员会的图书馆是综合性的更精确的编译时间运算评价。一个新的链接时增加了优化，以便为闭会期间的程序优化。许多优化得到了改善。现在的C编译器就立即退出缺少头文件。对于C + +0 x的改善实验性支持。一个实验性的C + +配置模式为补充。许多其他改动。
标签: Stable, Minor bugfixes, Major feature enhancements
Optimizations for Intel Atom processors were added, and the support for other processors was enhanced. The MPC library was integrated for more accurate compile time arithmetic evaluation. A new link-time optimizer was added, to allow for inter-procedural optimizations. Many optimizations were improved. The C compilers now exit immediately on a missing header file. The experimental support for C++0x was improved. An experimental C++ profile mode was added. Many other changes were made.

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