crc-ceck in a makefile

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Linux

makefile

Hi!

What i am trying is to generate a crc64sum of a file within a makefile and write the result into a file called *.check

In my Makefile i have something like this:

crc: $(DISTBinDir)/$(PROGRAM).check

$(DISTBinDir)/$(PROGRAM).check :
    $(shell export LD_LIBRARY_PATH=$(CRC64SUM_PATH); $(CRC64SUM_PATH)/crc64sum $(DISTBinDir)/$(PROGRAM) > $(DISTBinDir)/$(PROGRAM).check)
    @echo -e "$(green) Generating CRC"

The *.check file is created but it is always empty!? Why?

Can anybody tell me what's wrong here?

regards

Adam