.travis.yml

@@ -3,17 +3,12 @@ notifications:
   recipients:
     - rake-compiler@ml.commit-email.info
 before_script:
-  - gem update --system $RUBYGEMS_VERSION
   - gem update bundler
 rvm:
   - 2.1.2
   - 2.2
   - 2.3.0
   - ruby-head
-env:
-  - RUBYGEMS_VERSION=2.0.14
-  - RUBYGEMS_VERSION=2.2.2
-  - RUBYGEMS_VERSION=2.4.1
 matrix:
   allow_failures:
     - rvm: ruby-head

History.txt

@@ -1,3 +1,9 @@
+=== 1.0.3 / 2016-12-02
+
+* Enhancements:
+  * Support specifying required Ruby versions.
+    #137 [Patch by Lars Kanis]
+
 === 1.0.2 / 2016-11-13
 
 * Bugfixes:

lib/rake/extensiontask.rb

@@ -25,6 +25,7 @@ def init(name = nil, gem_spec = nil)
       @cross_compiling = nil
       @no_native = false
       @config_includes = []
+      @ruby_versions_per_platform = {}
     end
 
     def cross_platform
@@ -253,6 +254,16 @@ def define_native_tasks(for_platform = nil, ruby_ver = RUBY_VERSION, callback =
           # adjust to specified platform
           spec.platform = Gem::Platform.new(platf)
 
+          # set ruby version constraints
+          ruby_versions = @ruby_versions_per_platform[platf] || []
+          sorted_ruby_versions = ruby_versions.sort_by do |ruby_version|
+            ruby_version.split(".").collect(&:to_i)
+          end
+          spec.required_ruby_version = [
+            ">= #{ruby_api_version(sorted_ruby_versions.first)}",
+            "< #{ruby_api_version(sorted_ruby_versions.last).succ}"
+          ]
+
           # clear the extensions defined in the specs
           spec.extensions.clear
 
@@ -346,6 +357,10 @@ def define_cross_platform_tasks(for_platform)
           @lib_dir = "#{@lib_dir}/#{$1}"
         end
 
+        # Update cross compiled platform/version combinations
+        ruby_versions = (@ruby_versions_per_platform[for_platform] ||= [])
+        ruby_versions << version
+
         define_cross_platform_tasks_with_version(for_platform, version)
 
         # restore lib_dir
@@ -497,6 +512,10 @@ def natives_cross_platform
       [*@cross_platform].map { |p| "native:#{p}" }
     end
 
+    def ruby_api_version(ruby_version)
+      ruby_version.split(".")[0, 2].join(".")
+    end
+
     def fake_rb(platform, version)
       <<-FAKE_RB
         # Pre-load resolver library before faking, in order to avoid error

spec/lib/rake/extensiontask_spec.rb

@@ -454,6 +454,46 @@
         end
       end
 
+      it "should set required_ruby_version from RUBY_CC_VERSION" do
+        platforms = ["x86-mingw32", "x64-mingw32"]
+        ruby_cc_versions = ["1.8.6", "2.1.10", "2.2.6", "2.3.3", "2.10.1"]
+        ENV["RUBY_CC_VERSION"] = ruby_cc_versions.join(":")
+        config = mock(Hash)
+        ruby_cc_versions.each do |ruby_cc_version|
+          platforms.each do |platform|
+            config.stub!(:[]).
+              with("rbconfig-#{platform}-#{ruby_cc_version}").
+              and_return("/rubies/#{ruby_cc_version}/rbconfig.rb")
+          end
+        end
+        YAML.stub!(:load_file).and_return(config)
+
+        Gem.stub_chain(:configuration, :verbose=).and_return(true)
+
+        spec = Gem::Specification.new do |s|
+          s.name = 'my_gem'
+          s.platform = Gem::Platform::RUBY
+        end
+
+        cross_specs = []
+        Rake::ExtensionTask.new("extension_one", spec) do |ext|
+          ext.cross_platform = platforms
+          ext.cross_compile = true
+          ext.cross_compiling do |cross_spec|
+            cross_specs << cross_spec
+          end
+        end
+        platforms.each do |platform|
+          Rake::Task["native:my_gem:#{platform}"].execute
+        end
+
+        expected_required_ruby_versions = [
+          Gem::Requirement.new([">= 1.8", "< 2.11"]),
+          Gem::Requirement.new([">= 1.8", "< 2.11"]),
+        ]
+        cross_specs.collect(&:required_ruby_version).should == expected_required_ruby_versions
+      end
+
       after :each do
         ENV.delete('RUBY_CC_VERSION')
       end

tasks/gem.rake

@@ -3,7 +3,7 @@ require 'rubygems/package_task'
 GEM_SPEC = Gem::Specification.new do |s|
   # basic information
   s.name        = "rake-compiler"
-  s.version     = "1.0.2"
+  s.version     = "1.0.3"
   s.platform    = Gem::Platform::RUBY
 
   # description and details