title: OpenSSL headers missing when building OpenSSH
body: <p>I want to build a certain OpenSSH version with a specific OpenSSL version from sources, but I get the following error:</p>
  
  <pre><code>mkdir /tmp/ssh
  cp openssh-6.7p1.tar.gz /tmp/ssh
  cp openssl-1.0.1l.tar.gz /tmp/ssh
  cd /tmp/ssh
  tar zxvf openssl-1.0.1l.tar.gz
  cd openssl-1.0.1l
  ./config --prefix=/tmp/ssh
  make
  make install
  cd ..
  tar zxvf openssh-6.7p1.tar.gz
  cd openssh-6.7p1
  ./configure --with-ssl-dir=/tmp/ssh --prefix=/tmp/ssh
  
  ...
  checking openssl/opensslv.h usability... no
  checking openssl/opensslv.h presence... no
  checking for openssl/opensslv.h... no
  configure: error: *** OpenSSL headers missing - please install first or check config.log ***
  </code></pre>
  
  <p>Is there a bug in openSSH's configure script or do I have to change any command?</p>