From 6eabbed464c6a33a5af8d646805fae9fa3f3c648 Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Wed, 5 Nov 2014 20:32:09 -0600
Subject: [PATCH] Add `depend_on :apr`

---
 Library/Homebrew/dependency_collector.rb |  1 +
 Library/Homebrew/requirements.rb         | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/Library/Homebrew/dependency_collector.rb b/Library/Homebrew/dependency_collector.rb
index 546e92af39..1641c71e64 100644
--- a/Library/Homebrew/dependency_collector.rb
+++ b/Library/Homebrew/dependency_collector.rb
@@ -124,6 +124,7 @@ class DependencyCollector
     when :ld64       then LD64Dependency.new if MacOS.version < :leopard
     when :ant        then ant_dep(spec, tags)
     when :clt # deprecated
+    when :apr        then AprDependency.new(tags)
     when :cairo, :fontconfig, :freetype, :libpng, :pixman # deprecated
       Dependency.new(spec.to_s, tags)
     when :libltdl # deprecated
diff --git a/Library/Homebrew/requirements.rb b/Library/Homebrew/requirements.rb
index 05576a873d..7dcd5039f1 100644
--- a/Library/Homebrew/requirements.rb
+++ b/Library/Homebrew/requirements.rb
@@ -130,3 +130,27 @@ class JavaDependency < Requirement
     EOS
   end
 end
+
+class AprDependency < Requirement
+  fatal true
+
+  satisfy(:build_env => false) { MacOS::CLT.installed? }
+
+  def message
+    message = <<-EOS.undent
+      Due to packaging problems on Apple's part, software that compiles
+      against APR requires the standalone Command Line Tools.
+    EOS
+    if MacOS.version >= :mavericks
+      message += <<-EOS.undent
+        Run `xcode-select --install` to install them.
+      EOS
+    else
+      message += <<-EOS.undent
+        The standalone package can be obtained from
+        https://developer.apple.com/downloads/,
+        or it can be installed via Xcode's preferences.
+      EOS
+    end
+  end
+end