1.POSIX:2PROJECTDIR =../../..3include $(PROJECTDIR)/scripts/rules.mk4include ../rules.mk56OBJS =\7 ctype.$O\8 isalnum.$O\9 isalpha.$O\10 isascii.$O\11 isblank.$O\12 iscntrl.$O\13 isdigit.$O\14 isgraph.$O\15 islower.$O\16 isprint.$O\17 ispunct.$O\18 isspace.$O\19 isupper.$O\20 isxdigit.$O\21 toascii.$O\22 tolower.$O\23 toupper.$O\2425all: $(OBJS)