ruby - Installing proj4rb on Ubuntu : Cannot find proj_api.h header -


trying install proj4rb on ubuntu or linux mint fails error :

building native extensions.  take while... error:  error installing proj4rb:     error: failed build gem native extension.  ./siteconf20161110-4168-1b7och9.rb extconf.rb checking proj_api.h... no extconf.rb:6:in `<main>': cannot find proj_api.h header (runtimeerror)

it isn't clear packages needed, , couldn't find related post on stackoverflow.

just install libproj-dev package :

sudo aptitude install libproj-dev gem install proj4rb  # building native extensions.  take while... # installed proj4rb-1.0.0

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