Makefile error on OS X

[teverett]

oscar:pdp7-unix tom$ more Makefile 
# Top level makefile to build the utilities etc,
AS= tools/as7

all: utilities

utilities:
        $(AS) -o bin/cat   src/cmd/cat.s
        $(AS) -o bin/cp    src/cmd/cp.s
        $(AS) -o bin/chmod src/cmd/chmod.s
        $(AS) -o bin/chown src/cmd/chown.s
        $(AS) -o bin/chrm  src/cmd/chrm.s
        $(AS) -o bin/ls  src/other/wktls.s

clean:
        rm -f bin/*
oscar:pdp7-unix tom$ make
tools/as7 -o bin/cat   src/cmd/cat.s
I src/cmd/cat.s
bin/cat at tools/as7 line 195.
make: *** [utilities] Error 2

[teverett]

Fixed. /bin needed to exist. Makefile has been updated to do this.