versions

glibc 库, 不仅可以学习使用库函数,还可以学习函数的具体实现,是提高功力的好资料

libc {
  # The comment lines with "#errlist-compat" are magic; see errlist-compat.awk.
  # When you get an error from errlist-compat.awk, you need to add a new
  # version here.

  GLIBC_2.0 {
    #errlist-compat	127
    _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
  }
  GLIBC_2.1 {
    #errlist-compat	127
    _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
  }
  GLIBC_2.3 {
    #errlist-compat	128
    _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
  }
  GLIBC_2.4 {
    #errlist-compat	134
    _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
  }
}
librt {
  GLIBC_2.3 {
    # AIO functions.
    aio_cancel; aio_cancel64;
  }
}