- features. The LEVEL argument is used as the default value for the
- environment variable GUILE_WARN_DEPRECATED. See the README for
- documentation about this.
+ features. The LEVEL argument is used to determine the default value
+ for the environment variable GUILE_WARN_DEPRECATED. See the README
+ for more information.
+
+ The default is to get a vague warning at program exit if deprecated
+ features were used:
+
+ --enable-deprecated=yes
+ --enable-deprecated=summary
+
+ To get a detailed warning at first use of a deprecated feature:
+
+ --enable-deprecated=detailed
+
+ To get no warnings:
+
+ --enable-deprecated=shutup
+
+ To omit deprecated features completely and irrevokably:
+
+ --enable-deprecated=no