Installation instructions for required software

 * To install Curl development headers with SSL support:
   Please run apt-get install libcurl4-openssl-dev or libcurl4-gnutls-dev, whichever you prefer.

 * To install Apache 2 development headers:
   Please run apt-get install apache2-prefork-dev as root.

 * To install Apache Portable Runtime (APR) development headers:
   Please run apt-get install libapr1-dev as root.

 * To install Apache Portable Runtime Utility (APU) development headers:
   Please run apt-get install libaprutil1-dev as root.