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configure 時出現以下錯誤：

checking for autoconf... noconfigure: error
 
:*** These critical programs are missing or too old: as ld*** Check the INSTALL file for required versions.
   

    
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問題原因：
缺少autoconf或版本太低

下載安裝新版本

# wget ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.68.tar.gz# tar zxvf autoconf-2.68.tar.gz# cd autoconf-2.68# ./configure --prefix=/usr/
 
# make && make install
   

    
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檢視當前版本：

# autoconf -Vautoconf (GNU Autoconf) 2.68Copyright (C) 2010 Free Software Foundation, Inc.License GPLv3+/Autoconf: GNU GPL version 3 or later<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>This is free software: you are free to
 
 change and redistribute it.There is NO WARRANTY, to the extent permitted by law.Written by David J. MacKenzie and Akim Demaille.
   

    
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注意是大寫的V。

給我老師的人工智慧教程打call！http://blog.csdn.net/jiangjunshow