Downloading and compiling OpenSSL

First, we have to download the sources of OpenSSL from http://www.openssl.org. The last version, when i was written this paper, was openssl-0.9.6g. Now will be a more recent version, i think. I recommend you to download the last version.

• Compile OpenSSL: We are going to start compiling OpenSSL. So we have to execute the next command in the directory where we have descompresed the sources:

  cd openssl-0.9.6g 
  ./config no-threads -fPIC
  

  Apache 1.3 don't use threads (apache2 use it), and OpenSSL compile by default with threads, so we have to desactivate this option with the no-threads argument to ./config. -fPic is important if we are going to use the module mod_ssl as DSO. In some cases we need to select what compiler we want to use, with the command line:

  ./config no-threads -fPic os/compiler:gcc
  

  After execute the config command, we are going to compile the program:

  make 
  make test
  su (if you aren't root)
  make install
  

  By default OpenSSL will be installed in the directory /usr/local/ssl. We can select other directory using the following argument with ./config:

  ./config --prefix=/usr/local --openssldir=/usr/local/openssl