Fix macOS CI build, closes #213

Related to #211.

Author: evpobr

.github/workflows/build.yml

@@ -50,7 +50,7 @@ jobs:
 
     - name: Install macOS dependencies
       if: startsWith(matrix.os,'macos')
-      run: brew install automake fftw
+      run: brew install automake libtool libsndfile fftw
 
     - name: Install Windows dependencies
       if: startsWith(matrix.os,'windows')