Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
fe-secure-openssl.c:66:10: fatal error: openssl/engine.h: No such file or directory
   66 | #include <openssl/engine.h>
      |          ^~~~~~~~~~~~~~~~~~
It shows a compilation error which prevents from progressing the build process.