xml2-config not found. Please check your libxml2 installation

When config php source, there is an error:

xml2-config not found. Please check your libxml2 installation

In Synaptic, there is only libxml2 installed, while libxml2-dev is not installed. Just install libxml2-dev.

Or we can intall libxml2 using source code, like below:

sudo wget ftp://xmlsoft.org/libxml2/libxml2-2.6.28.tar.gz

sudo tar -zxvf libxml2-2.6.28.tar.gz

cd libxml2-2.6.28/

./configure

make

sudo make install