类型一：
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wget https://nchc.dl.sourceforge.net/project/libpng/zlib/1.2.11/zlib-1.2.11.tar.gz
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tar -xvf zlib-1.2.11.tar.gz
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cd zlib-1.2.11
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./configure --prefix=/usr/ local/zlib-1.2.11
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make
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sudo make install
然后将lib目录加入LD_LIBRARY_PATH中就可以使用了：
export LD_LIBRARY_PATH=/usr/local/zlib-1.2.11/lib:$LD_LIBRARY_PATH
类型二：
安装后，执行以下命令
1 cp libz.a /usr/local/lib
2 chmod 755 /usr/local/lib/libz.a
3 cp libz.so.1.2.8 /usr/local/lib
4 chmod 755 /usr/local/lib/libz.so.1.2.8
5 cp zlib.3 /usr/local/share/man/man3
6 chmod 755 /usr/local/share/man/man3/zlib.3
7 cp zlib.pc /usr/local/lib/pkgconfig
8 chmod 755 /usr/local/lib/pkgconfig/zlib.pc
9 cp zlib.h zconf.h /usr/local/include
10 chmod 755 /usr/local/include/zlib.h /usr/local/include/zconf.h