Make hardware code cross-platform.

1 files changed, 67 insertions, 0 deletions

diff --git a/Library/Homebrew/extend/os/linux/hardware/cpu.rb b/Library/Homebrew/extend/os/linux/hardware/cpu.rb
new file mode 100644
index 000000000..ef25aabfc
--- /dev/null
+++ b/Library/Homebrew/extend/os/linux/hardware/cpu.rb
@@ -0,0 +1,67 @@
+module Hardware
+  class CPU
+    extend 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
+
+    def cpuinfo
+      @cpuinfo ||= File.read("/proc/cpuinfo")
+    end
+
+    def type
+      @type ||= if cpuinfo =~ /Intel|AMD/
+        :intel
+      else
+        :dunno
+      end
+    end
+
+    def family
+      cpuinfo[/^cpu family\s*: ([0-9]+)/, 1].to_i
+    end
+    alias_method :intel_family, :family
+
+    def cores
+      cpuinfo.scan(/^processor/).size
+    end
+
+    def flags
+      @flags ||= cpuinfo[/^flags.*/, 0].split
+    end
+
+    # Compatibility with Mac method, which returns lowercase symbols
+    # instead of strings
+    def features
+      @features ||= flags[1..-1].map(&:intern)
+    end
+
+    %w[aes altivec avx avx2 lm sse3 ssse3 sse4 sse4_2].each do |flag|
+      define_method(flag + "?") { flags.include? flag }
+    end
+    alias_method :is_64_bit?, :lm?
+
+    def bits
+      is_64_bit? ? 64 : 32
+    end
+  end
+end