finished set_library_path for MacOS .app build

macos/set_library_path.sh

@@ -1,14 +1,18 @@
 #!/bin/sh
 set -e
 
+# Options
 WANTED_LIB=$1
 NEW_PATH=$2
 EXEC=$3
 
+# Function to extract the first element of a space seperated list
 get_first_arg() {
     echo $1
 }
 
-CURRENT_RPATH=$(get_first_arg $(otool -L $EXEC | grep $WANTED_LIB))
+# Get current path
+CURRENT_PATH=$(get_first_arg $(otool -L $EXEC | grep $WANTED_LIB))
 
-echo $CURRENT_RPATH
+# Change to the new path
+install_name_tool -change $CURRENT_PATH $NEW_PATH $EXEC