MySQL5.7.17在cmake的时候报错如下：

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CMake Error at cmake/boost.cmake:81 (MESSAGE):You can download it with -DDOWNLOAD_BOOST=1 -DWITH_BOOST=This CMake script will look for boost in .If it is not there,it will download and unpack it (in that directory) for you.If you are inside a firewall, you may need to use an http proxy:export http_proxy=http://example.com:80Call Stack (most recent call first):cmake/boost.cmake:238 (COULD_NOT_FIND_BOOST)CMakeLists.txt:455 (INCLUDE)-- Configuring incomplete, errors occurred!See also "/root/mysqlsoftware/mysql-5.7.17/CMakeFiles/CMakeOutput.log".See also "/root/mysqlsoftware/mysql-5.7.17/CMakeFiles/CMakeError.log".

解决办法是：
1.在/usr/local下创建一个名为boost的文件夹
mkdir -p /usr/local/boost
2.进入这个新创建的文件夹然后下载boost
wget http://www.sourceforge.net/projects/boost/files/boost/1.59.0/boost_1_59_0.tar.gz
3.解压
tar -xvzf boost_1_59_0.tar.gz
4.继续cmake，添加上红色部分

cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DENABLED_LOCAL_INFILE=ON \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_FEDERATED_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1 \
-DWITH_PARTITION_STORAGE_ENGINE=1 \
-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \
-DCOMPILATION_COMMENT='Mysqlma' \
-DWITH_READLINE=ON \
-DWITH_BOOST=/usr/local/boost \
-DSYSCONFDIR=/data/mysqldata/3306 \
-DMYSQL_UNIX_ADDR=/data/mysqldata/3306/mysql.sock