You have to install development tools first

[itsarshkalsi]

i have an issue when i run command gem install dashing

You have to install development tools first.
from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:541:in try_link0' from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:556:in try_link'
from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:765:in try_func' from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:997:in block in have_library'
from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:942:in block in checking_for' from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:350:in block (2 levels) in postpone'
from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:320:in open' from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:350:in block in postpone'
from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:320:in open' from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:346:in postpone'
from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:941:in checking_for' from C:/Ruby23-x64/lib/ruby/2.3.0/mkmf.rb:992:in have_library'
from extconf.rb:4:in `

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