4 files changed, 29 insertions, 2 deletions
diff --git a/Library/Homebrew/extend/os/linux/extend/pathname.rb b/Library/Homebrew/extend/os/linux/extend/pathname.rb
new file mode 100644
index 000000000..eb6ea409b
--- /dev/null
+++ b/Library/Homebrew/extend/os/linux/extend/pathname.rb
@@ -0,0 +1,19 @@
+class Pathname
+  # @private
+  def elf?
+    # See: https://en.wikipedia.org/wiki/Executable_and_Linkable_Format#File_header
+    read(4) == "\x7fELF"
+  end
+
+  # @private
+  def dynamic_elf?
+    if which "readelf"
+      popen_read("readelf", "-l", to_path).include?(" DYNAMIC ")
+    elsif which "file"
+      !popen_read("file", "-L", "-b", to_path)[/dynamic|shared/].nil?
+    else
+      raise StandardError, "Neither `readelf` nor `file` is available "\
+        "to determine whether '#{self}' is dynamically or statically linked."
+    end
+  end
+end
diff --git a/Library/Homebrew/extend/os/mac/extend/pathname.rb b/Library/Homebrew/extend/os/mac/extend/pathname.rb
new file mode 100644
index 000000000..5fd59e1e7
--- /dev/null
+++ b/Library/Homebrew/extend/os/mac/extend/pathname.rb
@@ -0,0 +1,5 @@
+require "os/mac/mach"
+
+class Pathname
+  include MachOShim
+end
diff --git a/Library/Homebrew/extend/os/mac/hardware/cpu.rb b/Library/Homebrew/extend/os/mac/hardware/cpu.rb
index b97c280cd..a216db6ae 100644
--- a/Library/Homebrew/extend/os/mac/hardware/cpu.rb
+++ b/Library/Homebrew/extend/os/mac/hardware/cpu.rb
@@ -1,5 +1,3 @@
-require "os/mac/pathname"
-
 module Hardware
   class CPU
     class << self
diff --git a/Library/Homebrew/extend/os/pathname.rb b/Library/Homebrew/extend/os/pathname.rb
new file mode 100644
index 000000000..5e6edeb30
--- /dev/null
+++ b/Library/Homebrew/extend/os/pathname.rb
@@ -0,0 +1,5 @@
+if OS.mac?
+  require "extend/os/mac/extend/pathname"
+elsif OS.linux?
+  require "extend/os/linux/extend/pathname"
+end