require 'formula'

class Mupdf < Formula
  homepage 'http://mupdf.com'
  url 'http://mupdf.googlecode.com/files/mupdf-0.9-source.tar.gz'
  md5 '76640ee16a797a27fe49cc0eaa87ce3a'

  depends_on 'jpeg'
  depends_on 'openjpeg'
  depends_on 'jbig2dec'

  def patches
    # Fix up the Makefile so it doesn't mess with our CFLAGS.
    DATA
  end

  def install
    if MacOS.leopard?
      raise <<-EOS.undent
        The version of Freetype that comes with Leopard is too old to build
        MuPDF against. It is possible to get MuPDF working on Leopard using the
        Freetype formula from Homebrew-Alt and some tweaks to the Makefile.
        This is left as an exercise for the reader.
      EOS
    end

    ENV.x11 # For LibPNG and Freetype
    system "make install prefix=#{prefix}"

    # MuPDF comes with some handy command-line tools. However, their names can
    # clash with other tools installed by formulae such as Poppler. So, we
    # add a `mu` prefix to every binary that starts with `pdf`.
    bin.entries.select{ |b| b.basename.to_s.match /^pdf/ }.each do |p|
      mv bin + p, bin + ('mu' + p.basename.to_s)
    end
  end
end

__END__

Remove some Makefile rules that Homebrew takes care of through CFLAGS and
LDFLAGS. MuPDF doesn't look at CPPFLAGS, so we piggyback it onto CFLAGS.

diff --git a/Makerules b/Makerules
index 63a75d6..077fcf5 100644
--- a/Makerules
+++ b/Makerules
@@ -5,19 +5,6 @@ OS := $(OS:MINGW%=MINGW)
 
 CFLAGS += -Wall
 
-ifeq "$(build)" "debug"
-CFLAGS += -pipe -g
-else ifeq "$(build)" "profile"
-CFLAGS += -pipe -O2 -DNDEBUG -pg
-LDFLAGS += -pg
-else ifeq "$(build)" "release"
-CFLAGS += -pipe -O2 -DNDEBUG -fomit-frame-pointer
-else ifeq "$(build)" "native"
-CFLAGS += -pipe -O2 -DNDEBUG -fomit-frame-pointer -march=native -mfpmath=sse
-else
-$(error unknown build setting: '$(build)')
-endif
-
 ifeq "$(OS)" "Linux"
 SYS_FREETYPE_INC := `pkg-config --cflags freetype2`
 X11_LIBS := -lX11 -lXext
@@ -32,16 +19,8 @@ endif
 # Mac OS X build depends on some thirdparty libs
 ifeq "$(OS)" "Darwin"
 SYS_FREETYPE_INC := -I/usr/X11R6/include/freetype2
-CFLAGS += -I/usr/X11R6/include
-LDFLAGS += -L/usr/X11R6/lib
+CFLAGS += $(CPPFLAGS)
 X11_LIBS := -lX11 -lXext
-ifeq "$(arch)" "amd64"
-CFLAGS += -m64
-LDFLAGS += -m64
-else
-CFLAGS += -m32
-LDFLAGS += -m32
-endif
 endif
 
 # The following section is an example of how to simply do cross-compilation