--- BUILD.gn.orig	2025-10-19 21:42:30 UTC
+++ BUILD.gn
@@ -1254,7 +1254,6 @@ optional("pdf") {
   deps = [
     ":clipstack_utils",
     ":pathops",
-    "//third_party/zlib",
   ]
   public = skia_pdf_public
   sources = skia_pdf_sources
@@ -1927,7 +1926,7 @@ action("skia.h") {
   skia_h = "$target_gen_dir/skia.h"
   script = "gn/find_headers.py"
 
-  args = [ rebase_path("//bin/gn") ] + [ rebase_path("//") ] +
+  args = [ "%%PREFIX%%/bin/gn" ] + [ rebase_path("//") ] +
          [ rebase_path(skia_h, root_build_dir) ] +
          rebase_path(skia_public_includes)
   depfile = "$skia_h.deps"