List objs in Makefile not srcs

Makefile

@@ -31,9 +31,8 @@ LIB_GIF_1 = -lgif
 LDLIBS = -lImlib2 -lX11 -lXft \
   $(LIB_EXIF_$(HAVE_LIBEXIF)) $(LIB_GIF_$(HAVE_GIFLIB))
 
-SRCS = autoreload_$(AUTORELOAD).c commands.c image.c main.c options.c \
+OBJS = autoreload_$(AUTORELOAD).o commands.o image.o main.o options.o \
-  thumbs.c util.c window.c
+  thumbs.o util.o window.o
-OBJS = $(SRCS:.c=.o)
 
 all: sxiv