bin_PROGRAMS = wall-notify
+
+# Provide current Git commit id as macro.
+AM_CPPFLAGS = -DGIT_VERSION="\"`cat $(srcdir)/git_version`\""
+wall-notify.$(OBJEXT): $(srcdir)/git_version
+
+$(srcdir)/git_version: $(SOURCES)
+ test -d $(top_srcdir)/.git && git describe --always >$@ || :>$@
+clean-local:
+ rm -f $(srcdir)/git_version