sudo gem update
Updating installed gems
Updating openssl
Building native extensions. This could take a while...
ERROR: Error installing openssl:
ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.7.0/gems/openssl-2.2.0/ext/openssl
/usr/bin/ruby2.7 -I /usr/local/lib/site_ruby/2.7.0 -r ./siteconf20200730-30569-1qv444b.rb extconf.rb
checking for t_open() in -lnsl... no
checking for socket() in -lsocket... no
checking for openssl/ssl.h... no
extconf.rb failed
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/$(RUBY_BASE_NAME)2.7
--with-openssl-dir
--without-openssl-dir
--with-openssl-include
--without-openssl-include=${openssl-dir}/include
--with-openssl-lib
--without-openssl-lib=${openssl-dir}/lib
--with-kerberos-dir
--without-kerberos-dir
--with-kerberos-include
--without-kerberos-include=${kerberos-dir}/include
--with-kerberos-lib
--without-kerberos-lib=${kerberos-dir}/lib
--with-debug
--without-debug
--enable-debug
--disable-debug
--with-nsl-dir
--without-nsl-dir
--with-nsl-include
--without-nsl-include=${nsl-dir}/include
--with-nsl-lib
--without-nsl-lib=${nsl-dir}/lib
--with-nsllib
--without-nsllib
--with-socket-dir
--without-socket-dir
--with-socket-include
--without-socket-include=${socket-dir}/include
--with-socket-lib
--without-socket-lib=${socket-dir}/lib
--with-socketlib
--without-socketlib
--with-openssl-config
--without-openssl-config
--with-pkg-config
--without-pkg-config
extconf.rb:99:in `<main>': OpenSSL library could not be found. You might want to use --with-openssl-dir=<dir> option to specify the prefix where OpenSSL is installed. (RuntimeError)
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/openssl-2.2.0/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.7.0/gems/openssl-2.2.0 for inspection.
Results logged to /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/openssl-2.2.0/gem_make.out
Gems updated: openssl | 
