sigrok-native-macosx: README: Document "brew link --force" requirements.

diff --git a/cross-compile/macosx/README b/cross-compile/macosx/README
index 22fc612625548c79d727ea3797a927e004b60b9c..23a4f874fb83eba1c71edcaedea6185f5f0ac9f0 100644 (file)
--- a/cross-compile/macosx/README
+++ b/cross-compile/macosx/README
@@ -17,8 +17,12 @@ Requirements
 
  - All requirements of the individual sigrok subprojects.
  - Homebrew (http://brew.sh)
-   Currently the script assumes that Homebrew is used and hardcodes certain
-   package versions and paths.
+   - Currently the script assumes that Homebrew is used and hardcodes certain
+     package versions and paths.
+   - You probably need to "brew link --force" certain packages that may be
+     available on your system (from Apple) but are required in newer versions
+     built by Homebrew: autoconf, automake, libtool, libffi (maybe others).
+     Without linking "libffi" for example, the check for pygobject3 will fail.
 
 
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