1.安装gcc编译器
yum install gcc
2.下载freetds
wget ftp://ftp.freetds.org/pub/freetds/stable/freetds-patched.tar.gz
3.安装
tar xzf freetds-patched.tar.gz ./configure --with-tdsver=7.4 --enable-msdblib make&&make install
填坑：
1.编译遇到如下错误：
start.c:(.text+0x27b): undefined reference to `dbinit' start.c:(.text+0x280): undefined reference to `dblogin' start.c:(.text+0x29c): undefined reference to `dbsetlname' start.c:(.text+0x2b4): undefined reference to `dbsetlname' start.c:(.text+0x2cc): undefined reference to `tdsdbopen' start.c:(.text+0x2f4): undefined reference to `dbuse' start.c:(.text+0x31a): undefined reference to `dbcmd' start.c:(.text+0x326): undefined reference to `dbsqlexec' start.c:(.text+0x332): undefined reference to `dbresults' start.c:(.text+0x357): undefined reference to `dbbind' start.c:(.text+0x36f): undefined reference to `dbclose'
解决方法：
编译的时候带上库目录
gcc -o start start.c -L/usr/local/lib/ -lsybdb
2.执行的时候遇到如下错误：
error while loading shared libraries: libsybdb.so.5: cannot open shared object file: No such file or directory
解决方法：
建立lib目录的链接
vim /etc/ld.so.conf.d/freetds.conf
添加/usr/local/lib后保存退出，之后执行
ldconfig
再编译即可通过