[librsvg: 1/2] Update dependency list for macOS

[Federico Mena Quintero <federico src gnome org>]

commit f18faf061b9dd4dbcdf4b612f86d1bdc0316c3de
Author: Dunja Lalic <dunja lalic gmail com>
Date:   Fri Oct 2 18:18:30 2020 +0200

    Update dependency list for macOS

 COMPILING.md | 20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)
---
diff --git a/COMPILING.md b/COMPILING.md
index c02fdd62..f734f2c8 100644
--- a/COMPILING.md
+++ b/COMPILING.md
@@ -96,27 +96,9 @@ Dependencies may be installed using [Homebrew](https://brew.sh) or another
 package manager.
 
 ```sh
-brew install cairo gdk-pixbuf glib pango \
-gobject-introspection rust
-
-export PKG_CONFIG_PATH="`brew --prefix`/lib/pkgconfig:\
-`brew --prefix libffi`/lib/pkgconfig:\
-/usr/lib/pkgconfig"
-export ARCHFLAGS="-arch x86_64"
+brew install automake gtk-doc pkgconfig libtool gobject-introspection gdk-pixbuf pango
 ```
 
-Note that `PKG_CONFIG_PATH` must be manually set to include Homebrew's libffi,
-as the system libffi is too old but Homebrew does not install it in a public
-location by default.
-
-Currently, cairo 1.15.4 or later must also be installed manually, as the
-Homebrew package is for the older stable release. This may require adding
-it to `PKG_CONFIG_PATH` as well if you do not install it in `/usr/local`.
-
-Setting `ARCHFLAGS` is required if gobject-introspection is using the system
-Python provided by Apple, as on Homebrew.
-
-
 # Basic compilation instructions
 
 If you are compiling a tarball: