-PROGRAM=main
-OBJS=sokoban.o
+PROGRAM:=main
+OBJS:=sokoban.o
-CFLAGS=-O3 -Wextra -Wall -Werror -fno-strict-aliasing -std=gnu11 \
- -I./sylvan/src
+CFLAGS=-O3 -Wextra -Wall -Werror -fno-strict-aliasing -std=gnu11
+CFLAGS+=-I./sylvan/src
all: $(OBJS) $(PROGRAM)