Update for Raspberry Pi 4

README.md

@@ -1,14 +1,16 @@
 # WiringPi
 WiringPi is an implementation of most of the Arduino Wiring functions for the Raspberry Pi, this gem is a wrapper for the main wiringpi library and provides a nice OO interface with a few other handy helpers.
 
+This branch of this fork has been updated to work on the Raspberry Pi 4.  This branch is specifically tied to WiringPi binary version 2.50 [here](https://github.com/WiringPi/WiringPi/releases/tag/final_official_2.50).  That is the maintenance repo for Wiring Pi now that Gordon Henderson (who long gave us all his great work) has deprecated his repo.
+
 ## Installation
-Install with `gem install wiringpi2` or use bundler's Gemfile
-```
-source 'https://rubygems.org'
 
-gem 'wiringpi2' # https://github.com/WiringPi/WiringPi-Ruby
+The offical rubygems version does not support Raspberry Pi 4, this branch of this fork will work with the Raspberry Pi 4.
+
+```
+gem install specific_install
+sudo gem specific_install -l https://github.com/davidgyoung/WiringPi-Ruby.git -b wiringpi250
 ```
-then: `bundle install`
 
 ## Example
 ```

ext/wiringpi/extconf.rb

@@ -2,6 +2,7 @@
 
 LIBDIR      = RbConfig::CONFIG['libdir']
 INCLUDEDIR  = RbConfig::CONFIG['includedir']
+$LIBRUBYARG_SHARED += " -lrt"
 
 $srcs = Dir.glob('WiringPi/wiringPi/*.c')
 $srcs += Dir.glob('WiringPi/devLib/*.c')

wiringpi.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name	= 'wiringpi'
-  s.version	= '2.32.0'
+  s.version	= '2.60.0'
   s.license = 'GNU Lesser General Public License v3'
   s.date	= '2013-04-07'
   s.platform= Gem::Platform::RUBY