gem install 时报错，no such file to load -- zlib (解决方案)

很多初玩ruby的同学，

通过ruby 的gem install安装时，经常会遇到的错误 

[root@localhost zlib]# gem install rails

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ERROR:  Loading command: install (LoadError)

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cannot load such file -- zlib51Testing软件测试网/NUOK3f

ERROR:  While executing gem ... (NoMethodError)51Testing软件测试网~ bO3s*o4Xo-JBS?

undefined method `invoke_with_build_args' for nil:NilClass

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解决方案：

进入ruby源码文件夹 
PO1AwY_u`S5x0安装ruby自身提供的zlib包 51Testing软件测试网2ItF t&_
#cd ext/zlib
+PnT|-Tt*D0#ruby ./extconf.rb51Testing软件测试网'l7\9^X/n/A
#make51Testing软件测试网g&B\(SH9g+X
#make install51Testing软件测试网,N?4t
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问题解决51Testing软件测试网JK5V]#ix/[ @

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-----

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附上另外一个错误的解决方案

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--with-openssl-include=/usr/local/ssl/include/ --with-openssl-lib=/usr/local/ssl/lib  

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也是一样的处理思路：51Testing软件测试网n(S} Ql4pqWo

#cd ext/openssl
#ruby ./extconf.rb
#make
#make install

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