title: How to fix: fatal error: openssl/opensslv.h: No such file or directory in RedHat 7
body: <p>I have RedHat Enterprise Linux Server 7, and I downloaded the linux kernel version 4.12.10 which I am trying to compile but when I execute the following command:</p>
  
  <pre><code>make modules
  </code></pre>
  
  <p>I get the following error: </p>
  
  <pre><code>scripts/sign-file.c:25:30: fatal error: openssl/opensslv.h: No such file or directory
  </code></pre>
  
  <p>Does anyone have an idea to fix this please ?</p>