2、libmemcached0.42在centos5.6下的编译参数
./configure --prefix=/usr/local/libmemcached --with-memcached --disable-64bit  CFLAGS="-O3 -march=i686"

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1、在CentOS5.6中安装libmemcached 1.0.6里会出现一个错误：
libmemcached/auto.cc: In function 'memcached_return_t text_incr_decr(memcached_server_st*, bool, const char*, size_t, uint64_t, bool)':libmemcached/auto.cc:73: error: expected `)' before 'PRIu64'
make[1]: *** [libmemcached/libmemcached_libmemcached_la-auto.lo] 错误 1
make[1]: Leaving directory `/usr/local/webserver/tmp/libmemcached-1.0.6'
make: *** [all] 错误 2

官方直接回答：CentOS5.6 is not support . https://bugs.launchpad.net/libmemcached/+bug/986815