I'm trying to compile a program that, according to the documentation, requires the "OpenSSL library". I have OpenSSL installed, and it's still giving me the error openssl/sha.h: No such file or directory. Is there some other library that has to be installed?
![make fatal error: openssl/sha.h: No such file or directory](https://cdn-ak-scissors.b.st-hatena.com/image/square/b464c2cda694ab68f456c208dff3f30700a47c13/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Funix%2FImg%2Fapple-touch-icon%402.png%3Fv%3D32fb07f7ce26)