Question

我以Ubuntu（Linux）+ gcc为例。

stdio.h
sys/socket.h
poll.h
pthread.h

在Ubuntu Linux（安装了gcc）上分别由哪个组织提供？ GNU？ Linux？ ISO？ Ubuntu的？

相应的库怎么样？

Answer 1

这些是库头，它们是系统上安装的C库的一部分。

在Ubuntu上使用 glibc 实现（GNU C库）。 C库的其他一些例子：
uclibc（嵌入式），avr-libc（嵌入式），dietlibc，klibc，elibc_FreeBSD ......

ISO / IEC创建了标准，这些库遵循它。

~ head -n 20 /usr/include/stdio.h
/* Define ISO C stdio on top of C++ iostreams.
   Copyright (C) 1991, 1994-2010, 2011 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

Answer 2

Ubuntu由Canonical维护，因此他们是组装软件包的人。

作为C标准库的GNU实现的一部分，标准C库头文件由GNU.org维护，因此这是Canonical从中获取的源代码。

Answer 3

它们由GNU提供。

/usr/include/stdio.h的第一行：

/* Define ISO C stdio on top of C++ iostreams.
   Copyright (C) 1991, 1994-2008, 2009, 2010 Free Software Foundation, Inc.
   This file is part of the GNU C Library...

Answer 4

gcc是一个GNU编译器，无论在

上安装什么系统

谁提供了C头文件？

4 个答案: