Makefile works on OS X but not on Ubuntu

I was wondering if StackOverflow could help me out today! So I am currently finishing up a project in C for one of my CS courses at Uni and I am running into a funny problem. When I use the commands 'make' and 'make test' on my OSX environment it runs just fine, but when I test it on a Ubuntu Virtual Machine, it gives me these errors:

make: prim:Command not found

makefile:32: recipe for target 'test failed.

make: ***[test] Error 127

Here is my makefile code below, any help is appreciated.

OBJS = main.o scanner.o AM.o binheap.o CDLL.o node.o prim.o vertex.o

OPTS = -Wall -Wextra -g -std=c99



main : $(OBJS)

    gcc $(OPTS) $(OBJS) -o prim -lm



main.o : main.c scanner.h AM.h binheap.h CDLL.h node.h prim.h vertex.h

    gcc $(OPTS) -c main.c



scanner.o : scanner.c scanner.h

    gcc $(OPTS) -c scanner.c



node.o : node.c node.h

    gcc $(OPTS) -c node.c



AM.o : AM.c AM.h

    gcc $(OPTS) -c AM.c



prim.o : prim.c prim.h

    gcc $(OPTS) -c prim.c



binheap.o : binheap.c binheap.h

    gcc $(OPTS) -c binheap.c

CDLL.o : CDLL.c CDLL.h

    gcc $(OPTS) -c CDLL.c



vertex.o : vertex.c vertex.h

    gcc $(OPTS) -c vertex.c



test: prim

     @echo ###############################

     @echo TESTING GRAPH1.TXT

     @echo prim graph1.txt

     @echo ###############################

     prim graph1.txt

     @echo ###############################

     @echo TESTING GRAPH2.TXT

     @echo prim graph2.txt

     @echo ###############################

     prim graph2.txt

     @echo ###############################



clean :

    rm -f $(OBJS) main