squid-3.2.5 在CentOS X86_64位的环境下默认配置编译会遇到错误，如下:

checking whether the C compiler works... no
configure: error: in `/opt/packages/goodlePackages/squid/squid_src/squid-3.2.5':
configure: error: C compiler cannot create executables

x86_64解决办法如下:

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./configure CXXFLAGS="-g -O2"  CFLAGS="-O2 -march=x86-64" --prefix=/usr/local/squid
make
make install

i686

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./configure -disable-64bit CFLAGS="-O3 -march=i686" --prefix=/usr/local/squid
make
make install