[BridgeSupport] Run specs only if the executable is available.

spec/integration_spec.rb

@@ -168,7 +168,7 @@ module Pod
       #--------------------------------------#
 
       if `which appledoc`.strip.empty?
-        puts "    ! ".red << "Skipping documentation generation specs, because appledoc can't be found."
+        puts "    ! ".red << "Skipping because the `appledoc` executable can't be found."
       else
         it "generates documentation of all pods by default" do
 

spec/unit/generator/bridge_support_spec.rb

 require File.expand_path('../../../spec_helper', __FILE__)
 
 describe "Pod::Generator::BridgeSupport" do
+
+  if `which gen_bridge_metadata`.strip.empty?
+    puts "  ! ".red << "Skipping because the `gen_bridge_metadata` executable can't be found."
+  else
     it "generates a metadata file with the appropriate search paths" do
       headers = %w{ /some/dir/foo.h /some/dir/bar.h /some/other/dir/baz.h }.map { |h| Pathname.new(h) }
       generator = Pod::Generator::BridgeSupport.new(headers)
@@ -11,4 +15,5 @@ describe "Pod::Generator::BridgeSupport" do
       generator.instance_variable_get(:@command).should ==
         %{-c "-I '/some/dir' -I '/some/other/dir'" -o '/path/to/Pods.bridgesupport' '#{headers.join("' '")}'}
     end
+  end
 end