From c4818394cbd8872016e56a97e1a464a635d71c6c Mon Sep 17 00:00:00 2001
From: Jack Nagel
Date: Wed, 1 Oct 2014 23:32:53 -0500
Subject: Post-install audit for shadowed header files

---
 Library/Homebrew/cmd/audit.rb             |  1 +
 Library/Homebrew/formula_cellar_checks.rb | 19 +++++++++++++++++++
 Library/Homebrew/formula_installer.rb     |  5 +++++
 3 files changed, 25 insertions(+)

(limited to 'Library')

diff --git a/Library/Homebrew/cmd/audit.rb b/Library/Homebrew/cmd/audit.rb
index 0cf20b75b..cbfb67dce 100644
--- a/Library/Homebrew/cmd/audit.rb
+++ b/Library/Homebrew/cmd/audit.rb
@@ -567,6 +567,7 @@ class FormulaAuditor
     audit_check_output(check_generic_executables(f.bin))
     audit_check_output(check_non_executables(f.sbin))
     audit_check_output(check_generic_executables(f.sbin))
+    audit_check_output(check_shadowed_headers)
   end
 
   def audit
diff --git a/Library/Homebrew/formula_cellar_checks.rb b/Library/Homebrew/formula_cellar_checks.rb
index e1341303b..f639c2046 100644
--- a/Library/Homebrew/formula_cellar_checks.rb
+++ b/Library/Homebrew/formula_cellar_checks.rb
@@ -106,4 +106,23 @@ module FormulaCellarChecks
       EOS
     ]
   end
+
+  def check_shadowed_headers
+    return if f.keg_only? || !f.include.directory?
+
+    files  = relative_glob(f.include, "**/*.h")
+    files &= relative_glob("#{MacOS.sdk_path}/usr/include", "**/*.h")
+    files.map! { |p| File.join(f.include, p) }
+
+    return if files.empty?
+
+    ["Header files that shadow system header files were installed to \"#{f.include}\".",
+     "The offending files are:  \n  #{files * "\n  "}"]
+  end
+
+  private
+
+  def relative_glob(dir, pattern)
+    Dir.chdir(dir) { Dir[pattern] }
+  end
 end
diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index c5914484c..7723c0f8d 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -384,6 +384,7 @@ class FormulaInstaller
       audit_lib
       audit_man
       audit_info
+      audit_include
     end
 
     c = Caveats.new(f)
@@ -671,6 +672,10 @@ class FormulaInstaller
     print_check_output(check_infopages)
   end
 
+  def audit_include
+    print_check_output(check_shadowed_headers)
+  end
+
   private
 
   def hold_locks?
-- 
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