hardware: move generic logic from linux. (#454)

Library/Homebrew/extend/os/linux/hardware/cpu.rb

 module Hardware
   class CPU
     class << self
-
-      OPTIMIZATION_FLAGS = {
-        :penryn => "-march=core2 -msse4.1",
-        :core2 => "-march=core2",
-        :core => "-march=prescott"
-      }.freeze
-      def optimization_flags
-        OPTIMIZATION_FLAGS
-      end
-
-      # Linux supports x86 only, and universal archs do not apply
-      def arch_32_bit
-        :i386
-      end
-
-      def arch_64_bit
-        :x86_64
-      end
-
       def universal_archs
         [].extend ArchitectureListExtension
       end

Library/Homebrew/extend/os/mac/hardware/cpu.rb

@@ -3,19 +3,15 @@ require "os/mac/pathname"
 module Hardware
   class CPU
     class << self
-
-      OPTIMIZATION_FLAGS = {
-        :penryn => "-march=core2 -msse4.1",
-        :core2 => "-march=core2",
-        :core => "-march=prescott",
+      PPC_OPTIMIZATION_FLAGS = {
         :g3 => "-mcpu=750",
         :g4 => "-mcpu=7400",
         :g4e => "-mcpu=7450",
         :g5 => "-mcpu=970",
-        :g5_64 => "-mcpu=970 -arch ppc64"
+        :g5_64 => "-mcpu=970 -arch ppc64",
       }.freeze
       def optimization_flags
-        OPTIMIZATION_FLAGS
+        OPTIMIZATION_FLAGS.merge(PPC_OPTIMIZATION_FLAGS)
       end
 
       # These methods use info spewed out by sysctl.

Library/Homebrew/hardware.rb

@@ -8,6 +8,25 @@ module Hardware
     PPC_64BIT_ARCHS   = [:ppc64].freeze
 
     class << self
+      OPTIMIZATION_FLAGS = {
+        :penryn => "-march=core2 -msse4.1",
+        :core2 => "-march=core2",
+        :core => "-march=prescott",
+        :dunno => "",
+      }.freeze
+
+      def optimization_flags
+        OPTIMIZATION_FLAGS
+      end
+
+      def arch_32_bit
+        :i386
+      end
+
+      def arch_64_bit
+        :x86_64
+      end
+
       def type
         :dunno
       end