no Ubuntu
apt-get install libldap2-dev

ln -s /usr/lib/ldap* /usr/lib/


no Centos
yum install openldap-devel
ln -s /usr/lib64/libldap.so /usr/lib/libldap.so 
ln -s /usr/lib64/libldap_r.so /usr/lib/libldap_r.so



http://serverfault.com/questions/444238/compiling-php-with-ldap-support-on-ubuntu-12-10
https://forum.directadmin.com/showthread.php?t=41922
http://crybit.com/20-common-php-compilation-errors-and-fix-unix/