+acctdump_cc_out:=$(shell \
+ printf "\#include <sys/types.h>\n\#include <sys/acct.h>" \
+ | $(CC) -E - 2>&1 >/dev/null \
+)
+ifeq (,$(acctdump_cc_out))
+PROGRAMS+=acctdump
+MAN8PAGES+=acctdump.8
+else
+$(warning Not building acctdump: $(acctdump_cc_out))
+endif
+