标签：des style blog http io ar os 使用 sp
【glibc 和 libc】|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
[root
@Betty ~]# /lib/libc.so.6
GNU C Library stable release version 2.5, by Roland McGrath et al.
Copyright (C) 2006 Free Software Foundation, Inc.
This isfreesoftware; see thesourceforcopying conditions.
There is NO warranty; not evenforMERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 4.1.2 20080704 (Red Hat 4.1.2-52).
Compiled on a Linux 2.6.9 system on 2013-01-08.
Available extensions:
The C stubs add-on version 2.1.2.
cryptadd-on version 2.1 by Michael Glad and others
GNU Libidn by Simon Josefsson
GNU libio by Per Bothner
NIS(YP)/NIS+ NSS modules 0.19 by Thorsten Kukuk
Native POSIX Threads Library by Ulrich Drepper et al
BIND-8.2.3-T5B
RT using linux kernel aio
Thread-localstorage support included.
For bug reporting instructions, please see:
<http://www.gnu.org/software/libc/bugs.html>.
[root
@Betty ~]#
|
|
1
2
3
4
5
6
7
|
[root
@Betty ~]# ldd --version
ldd (GNU libc) 2.5
Copyright (C) 2006 Free Software Foundation, Inc.
This isfreesoftware; see thesourceforcopying conditions. There is NO
warranty; not evenforMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.
[root
@Betty ~]#
|
Glib
GLib is a general-purpose utility library, which provides many useful data types, macros, type conversions, string utilities, file utilities, a main loop abstraction, and so on. It works on many UNIX-like platforms, Windows, OS/2 and BeOS. GLib is released under the GNU Library General Public License (GNU LGPL).
The general policy of GLib is that all functions are invisibly threadsafe with the exception of data structure manipulation functions, where, if you have two threads manipulating the same data structure, they must use a lock to synchronize their operation.
GLib is the low-level core library that forms the basis for projects such as GTK+ and GNOME. It provides data structure handling for C, portability wrappers, and interfaces for such runtime functionality as an event loop, threads, dynamic loading, and an object system.
Overview:
Any Unix-like operating system needs a C library: the library which defines the ``system calls‘‘ and other basic facilities such as open, malloc, printf, exit...
The GNU C Library is used as the C library in the GNU systems and most systems with the Linux kernel.
Project Goals:
The GNU C Library is primarily designed to be a portable and high performance C library. It follows all relevant standards including ISO C11 and POSIX.1-2008. It is also internationalized and has one of the most complete internationalization interfaces known.
History:
The history of Unix and various standards determine much of the interface of the C library. In general the GNU C Library supports the ISO C and POSIX standards. We also try to support the features of popular Unix variants (including BSD and System V) when those do not conflict with the standards. Different compatibility modes (selectable when you compile an application) allow the peaceful coexistence of compatibility support for different varieties of Unix.
libc 实际上是一个泛指。凡是符合实现了 C 标准规定的内容，都是一种 libc 。
glibc 是 GNU 组织对 libc 的一种实现。它是 unix/linux 的根基之一。
微软也有自己的 libc 实现，叫 msvcrt 。
嵌入式行业里还常用 uClibc ，是一个迷你版的 libc 。
标签：des style blog http io ar os 使用 sp
原文地址：http://my.oschina.net/iamhere/blog/355154
