class Ghostscript < Formula
  desc "Interpreter for PostScript and PDF"
  homepage "https://www.ghostscript.com/"
  url "https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/download/gs927/ghostpdl-9.27.tar.gz"
  sha256 "9e089546624296bf4aca14c2adcb0762b323ca77ae14176d21127b749baac8d6"
  revision 1

  bottle do
    sha256 "9d0eeacca30a4c80b31b983364dde5278aefdf95247ffe54a7217fba6cfeb56c" => :catalina
    sha256 "4bb192d7d0f38dd990f9d042e0e39002a1d762685f13d670fbab368bf5ca411e" => :mojave
    sha256 "882e895e24244985a47bad1db7f4d86d8bcbebb5aafa532bde393554a2e3815f" => :high_sierra
    sha256 "55b5a12f39605e29c6faddeca9ae366b8fda8ee44ef24d0ebe34dcad803f012a" => :sierra
  end

  head do
    # Can't use shallow clone. Doing so = fatal errors.
    url "https://git.ghostscript.com/ghostpdl.git", :shallow => false

    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  depends_on "pkg-config" => :build
  depends_on "libtiff"

  # https://sourceforge.net/projects/gs-fonts/
  resource "fonts" do
    url "https://downloads.sourceforge.net/project/gs-fonts/gs-fonts/8.11%20%28base%2035%2C%20GPL%29/ghostscript-fonts-std-8.11.tar.gz"
    sha256 "0eb6f356119f2e49b2563210852e17f57f9dcc5755f350a69a46a0d641a0c401"
  end

  # Patch upstream Bug 700952 (https://bugs.ghostscript.com/show_bug.cgi?id=700988) in ghostscript 9.27
  patch do
    url "https://git.ghostscript.com/?p=ghostpdl.git;a=patch;h=06c920713e11"
    sha256 "15db61d2ca230df92e3b40d717e6baa475b13aa5583c08074f57f2c6f74018cc"
  end

  patch :DATA # Uncomment macOS-specific make vars

  def install
    args = %W[
      --prefix=#{prefix}
      --disable-cups
      --disable-compile-inits
      --disable-gtk
      --disable-fontconfig
      --without-libidn
      --with-system-libtiff
      --without-x
    ]

    if build.head?
      system "./autogen.sh", *args
    else
      system "./configure", *args
    end

    # Fix for shared library bug https://bugs.ghostscript.com/show_bug.cgi?id=701211
    # Can be removed in next version, and possibly replaced by passing
    # --enable-gpdl to configure
    inreplace "Makefile", "PCL_XPS_TARGETS=$(PCL_TARGET) $(XPS_TARGET)",
                          "PCL_XPS_TARGETS=$(PCL_TARGET) $(XPS_TARGET) $(GPDL_TARGET)"

    # Install binaries and libraries
    system "make", "install"
    system "make", "install-so"

    (pkgshare/"fonts").install resource("fonts")
    (man/"de").rmtree
  end

  test do
    ps = test_fixtures("test.ps")
    assert_match /Hello World!/, shell_output("#{bin}/ps2ascii #{ps}")
  end
end

__END__
diff --git i/base/unix-dll.mak w/base/unix-dll.mak
index f50c09c00adb..8855133b400c 100644
--- i/base/unix-dll.mak
+++ w/base/unix-dll.mak
@@ -89,18 +89,33 @@ GPDL_SONAME_MAJOR_MINOR=$(GPDL_SONAME_BASE)$(GS_SOEXT)$(SO_LIB_VERSION_SEPARATOR
 # similar linkers it must containt the trailing "="
 # LDFLAGS_SO=-shared -Wl,$(LD_SET_DT_SONAME)$(LDFLAGS_SO_PREFIX)$(GS_SONAME_MAJOR)
 
 
 # MacOS X
-#GS_SOEXT=dylib
-#GS_SONAME=$(GS_SONAME_BASE).$(GS_SOEXT)
-#GS_SONAME_MAJOR=$(GS_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_SOEXT)
-#GS_SONAME_MAJOR_MINOR=$(GS_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_VERSION_MINOR).$(GS_SOEXT)
+GS_SOEXT=dylib
+GS_SONAME=$(GS_SONAME_BASE).$(GS_SOEXT)
+GS_SONAME_MAJOR=$(GS_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_SOEXT)
+GS_SONAME_MAJOR_MINOR=$(GS_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_VERSION_MINOR).$(GS_SOEXT)
 #LDFLAGS_SO=-dynamiclib -flat_namespace
-#LDFLAGS_SO_MAC=-dynamiclib -install_name $(GS_SONAME_MAJOR_MINOR)
+GS_LDFLAGS_SO=-dynamiclib -install_name $(GS_SONAME_MAJOR_MINOR)
 #LDFLAGS_SO=-dynamiclib -install_name $(FRAMEWORK_NAME)
 
+PCL_SONAME=$(PCL_SONAME_BASE).$(GS_SOEXT)
+PCL_SONAME_MAJOR=$(PCL_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_SOEXT)
+PCL_SONAME_MAJOR_MINOR=$(PCL_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_VERSION_MINOR).$(GS_SOEXT)
+PCL_LDFLAGS_SO=-dynamiclib -install_name $(PCL_SONAME_MAJOR_MINOR)
+
+XPS_SONAME=$(XPS_SONAME_BASE).$(GS_SOEXT)
+XPS_SONAME_MAJOR=$(XPS_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_SOEXT)
+XPS_SONAME_MAJOR_MINOR=$(XPS_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_VERSION_MINOR).$(GS_SOEXT)
+XPS_LDFLAGS_SO=-dynamiclib -install_name $(XPS_SONAME_MAJOR_MINOR)
+
+GPDL_SONAME=$(GPDL_SONAME_BASE).$(GS_SOEXT)
+GPDL_SONAME_MAJOR=$(GPDL_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_SOEXT)
+GPDL_SONAME_MAJOR_MINOR=$(GPDL_SONAME_BASE).$(GS_VERSION_MAJOR).$(GS_VERSION_MINOR).$(GS_SOEXT)
+GPDL_LDFLAGS_SO=-dynamiclib -install_name $(GPDL_SONAME_MAJOR_MINOR)
+
 GS_SO=$(BINDIR)/$(GS_SONAME)
 GS_SO_MAJOR=$(BINDIR)/$(GS_SONAME_MAJOR)
 GS_SO_MAJOR_MINOR=$(BINDIR)/$(GS_SONAME_MAJOR_MINOR)

 PCL_SO=$(BINDIR)/$(PCL_SONAME)
