I am getting an error message on passing this line of code in the Terminal:./configure --prefix=/home/username/ServerError message:configure: error: pcre-config for libpcre not found. PCRE is requiredand available from http://pcre.org/I followed the link mentioned in the error message to extract PCRE-8.40.tar.gz and PCRE2-10.21.tar.gz in home/username/xyz/httpd-2.4.25/srclib.Then I renamed the extracted folder as PCRE and PCRE2. Yet I am getting the same error message. What am I doing wrong guys? 
How to install Apache (httpd-2.4.25.tar.gz) on Linux Mint Debian edition?
debian;linux mint;apache httpd
You need to make the PCRE library available to your compiler (strictly speaking, to the build system, which is looking for an installed library, and the pcre-config tool somewhere on the path). The simplest way to do this, if you have root access on your system (or sudo), is to install libpcre3-dev:sudo apt-get install libpcre3-devIf you don't have root, you'll have to install PCRE somewhere, build it and install it, then add the resulting bin directory to your path.