How can I list the current value of all variables (also called macros) in a Makefile when running make?

E.g. if this is in the Makefile:

CUR-DIR := $(shell /bin/pwd)
LOG-DIR := $(CUR-DIR)/make-logs

Then I would like it to tell me:

CUR-DIR = /home/johv/src/test
LOG-DIR = /home/johv/src/test/make-logs
makefile gnu-make
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