1.POSIX:23BINDIR = ../../../bin/45all:6 PATH=$(BINDIR):$$PATH ./runtests.sh78tests:9 @$(MAKE) |\10 grep -v TODO |\11 grep FAIL >/dev/null &&\12 printf '[FAIL]' || printf '[PASS]'; printf '\tmake/error\n'1314hello:15 @echo Hello World!1617clean:18 rm -f test.log tmp?.* file? file.c file.o core*