Makefile rule not executing

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makefile

Hi,

I have a makefile which for some reason does not execute the last rule. Here is the file

SRCS=$(wildcard *.endian)
SRCSE=$(wildcard *.json)
OBJS=$(SRCS:.endian=.o)
ENDIAN=$(SRCSE:.json=.endian)
OBJDIR=$(OS_TARGET)/$(BUILD_TYPE)

all: start os_target $(ENDIAN) $(OBJS)
.PHONY: all

start:
ifeq ($(OS_TARGET),)
	@echo "No OS target supplied... aborting."
	@exit 1
endif
	@echo "*** Target: $(OS_TARGET) [$(BUILD_TYPE)] ***"


os_target:
ifeq (,$(findstring $(OBJDIR),$(wildcard $(OBJDIR) )))
	@mkdir -p $(OBJDIR)
endif

%.endian:%.json
	@echo "Convert into Big-Endian:"
	endian_convert.bin $<

%.o:%.endian
	@echo "Build object:"
	$(OCC) $(OFLAGS) $< $(OS_TARGET)/$(BUILD_TYPE)/$@

clean:
ifeq ($(OS_TARGET),)
	@echo "No OS target supplied... aborting."
	@exit 1
endif
	@${RM} -frv $(CURDIR)/$(OS_TARGET)/$(BUILD_TYPE)/*.o
	@${RM} -frv $(CURDIR)/*.endian

For some reason the rule $(OBJS) is not executing.

Does anyone have an idea why this is happening?

Thanks in advance