ubuntu安装greenplum的过程中有两个比较难找的包，特地写出来给大家分享一下：
错误提示1：configure: error: header file <ldap.h> is required for LDAP
解决：sudo apt-get install libldap2-dev
错误提示2：checking for curl-config...
no *** The curl-config script could not be found.
Make sure it is *** in your path, and that curl is properly installed. ***
Or see http://curl.haxx.se/ configure: error: Library requirements (curl) not met.
解决：sudo apt-get install libcurl4-openssl-dev
错误提示３：/usr/bin/ld: cannot find -lperl
collect2: error: ld returned 1 exit status
../../../src/Makefile.shlib:365: recipe for target 'plperl.so' failed
make[3]: *** [plperl.so] Error 1
这个错误是通过./configure检测不出来，是在ｍake的时候出现的，因为少安装一个依赖包。
解决：sudo apt-get install libperl-dev