readme: update macos dependencies

diff --git a/README.md b/README.md
index 24ed8f3b973cc68bf8297f04eabbd10ecb59cc97..3a84cbad53b13b905868044faa6bf096ee4ba725 100644 (file)
--- a/README.md
+++ b/README.md
@@ -95,8 +95,10 @@ If you plan to build a bundle, you also need to install `patchelf`
 
 ### macOS:
 
+Note: some dependencies of gtk+ seems to only be pulled with gtk+3, gtkglext seems to require libffi.
+
 ```sh
-brew install cmake glib gtk+ pkgconfig minizip webp coreutils gnu-sed wget sassc
+brew install cmake glib libffi gtk+ gtk+3 pkgconfig minizip webp coreutils gnu-sed wget sassc
 brew link --force gettext
 ```