While trying to configure Apache to serve https with a newly installed certificate from certbot, I learned that mod_ssl isn't enabled. It's not even in the modules directory. I tried recompiling Apache with the --enable-ssl option and saw no change in the ability to use the definitions from mod_ssl. What else can I do to get mod_ssl enabled in my apache config?
I got this error when configuring:
./configure --with-included-apr --with-included-apr-util --enable-ssl --prefix=/usr/local/httpd checking whether to enable mod_ssl... checking dependencies checking for OpenSSL... checking for user-provided OpenSSL base directory... none checking for OpenSSL version >= 0.9.8a... FAILED configure: WARNING: OpenSSL version is too old no checking whether to enable mod_ssl... configure: error: mod_ssl has been requested but can not be built due to prerequisite failures I tried installing openssl and was told I was already at the highest version:
%>apt-get install openssl Reading package lists... Done Building dependency tree Reading state information... Done openssl is already the newest version (1.1.0l-1~deb9u1). Some have asked about OS:
Linux toesr-instance 4.9.0-11-amd64 #1 SMP Debian 4.9.189-3+deb9u2 (2019-11-11) x86_64 GNU/Linux 
./configurelog anything? e.g. location of openssl libraries/headerschecking whether to enable mod_ssl... checking dependencieschecking for OpenSSL... checking for user-provided OpenSSL base directory... nonechecking for OpenSSL version >= 0.9.8a... FAILEDconfigure: WARNING: OpenSSL version is too oldno checking whether to enable mod_ssl... configure: error: mod_ssl has been requested but can not be built due to prerequisite failures--enable-sslso you should amend your title. The log output you show (in comment, you should put it in the question) clearly states that SSL is not compiled in due to deficiencies (too old OpenSSL version)