Issues installing gollum

[j3mdamas]

Hi,

I was following the instructions here to install on Ubuntu 16.04.6 LTS, but I faced some issues:

1. rugged depends on libssl-dev (see partial log 1 below). Doing apt-get install libssl-dev solved it
2. gollum-lib requires Ruby version 2.4 (see log 2 below). Installing Ruby 2.4 follow instructions from here fixed it.

[1]

-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing:  OPENSSL_LIBRARIES OPENSSL_INCLUDE_DIR) 
CMake Error at cmake/Modules/SelectHTTPSBackend.cmake:27 (MESSAGE):
  Unable to autodetect a usable HTTPS backend.Please pass the backend name
  explicitly (-DUSE_HTTPS=backend)
Call Stack (most recent call first):
  src/CMakeLists.txt:110 (Include)


-- Configuring incomplete, errors occurred!
See also "/var/lib/gems/2.3.0/gems/rugged-0.99.0/vendor/libgit2/build/CMakeFiles/CMakeOutput.log".
See also "/var/lib/gems/2.3.0/gems/rugged-0.99.0/vendor/libgit2/build/CMakeFiles/CMakeError.log".
 -- /usr/bin/make
*** extconf.rb failed ***

[2]

$ sudo gem install gollum
Building native extensions.  This could take a while...
Successfully installed rugged-0.99.0
Fetching: gollum-rugged_adapter-1.0.gem (100%)
Successfully installed gollum-rugged_adapter-1.0
Fetching: rouge-3.24.0.gem (100%)
Successfully installed rouge-3.24.0
Fetching: mini_portile2-2.4.0.gem (100%)
Successfully installed mini_portile2-2.4.0
Fetching: nokogiri-1.10.10.gem (100%)
Building native extensions.  This could take a while...
Successfully installed nokogiri-1.10.10
Fetching: crass-1.0.6.gem (100%)
Successfully installed crass-1.0.6
Fetching: loofah-2.7.0.gem (100%)
Successfully installed loofah-2.7.0
Fetching: github-markup-3.0.4.gem (100%)
Successfully installed github-markup-3.0.4
Fetching: gemojione-4.3.3.gem (100%)
Successfully installed gemojione-4.3.3
Fetching: octicons-8.5.0.gem (100%)
Successfully installed octicons-8.5.0
Fetching: twitter-text-1.14.7.gem (100%)
Successfully installed twitter-text-1.14.7
Fetching: gollum-lib-5.0.6.gem (100%)
ERROR:  Error installing gollum:
	gollum-lib requires Ruby version >= 2.4.

[dometto]

Thanks for sharing @j3mdamas! FYI, the wiki is publicly editable, so anyone who reads this: feel free to keep the installation instructions up to date when something changes.

[j3mdamas]

@dometto sorry, I didn't know I could edit the wiki. Thanks.