require 'formula'

class NewEnoughEmacs < Requirement
  fatal true

  def satisfied?
    `emacs --version`.split("\n")[0] =~ /GNU Emacs (\d+)\./
    major_version = ($1 || 0).to_i
    major_version >= 23
  end

  def message
    "Emacs support requires at least Emacs 23."
  end
end

class Notmuch < Formula
  homepage 'http://notmuchmail.org'
  url 'http://notmuchmail.org/releases/notmuch-0.16.tar.gz'
  sha1 '1919277b322d7aaffa81b80a64aedbb8a1c52a2b'

  option "emacs", "Install emacs support."

  depends_on NewEnoughEmacs if build.include? "emacs"
  depends_on 'pkg-config' => :build
  depends_on 'xapian'
  depends_on 'talloc'
  depends_on 'gmime'

  def patches
    p = []
    # Fix for mkdir behavior change in 10.9: http://notmuchmail.org/pipermail/notmuch/2013/016388.html
    p << DATA
    # Fix for building with clang: http://git.notmuchmail.org/git/notmuch/commit/db465e443f3cd5ef3ba52304ab8b5dc6e0d7e620
    p << "http://git.notmuchmail.org/git/notmuch/patch/db465e443f3cd5ef3ba52304ab8b5dc6e0d7e620"
  end

  def install
    args = ["--prefix=#{prefix}"]
    if build.include? "emacs"
      args << "--with-emacs"
    else
      args << "--without-emacs"
    end
    system "./configure", *args

    system "make", "V=1", "install"
  end
end

__END__
diff --git a/Makefile.local b/Makefile.local
index 72524eb..c85e09c 100644
--- a/Makefile.local
+++ b/Makefile.local
@@ -236,11 +236,11 @@ endif
 quiet ?= $($(shell echo $1 | sed -e s'/ .*//'))
 
 %.o: %.cc $(global_deps)
-	@mkdir -p .deps/$(@D)
+	@mkdir -p $(patsubst %/.,%,.deps/$(@D))
 	$(call quiet,CXX $(CPPFLAGS) $(CXXFLAGS)) -c $(FINAL_CXXFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d
 
 %.o: %.c $(global_deps)
-	@mkdir -p .deps/$(@D)
+	@mkdir -p $(patsubst %/.,%,.deps/$(@D))
 	$(call quiet,CC $(CPPFLAGS) $(CFLAGS)) -c $(FINAL_CFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d
 
 .PHONY : clean
-- 
1.8.4.2