Problem setting a variable inside a target

[Ed L Wolf]

Hello

I am having some trouble trying to set a variable inside a target. When reading 
the variable, it comes up blank. Below is my make file code. The eval statement 
below highlighted in red is not working. Can you provide some assistance 
please? I am using GNU Make 4.1

$(DIR_A2LGEN_SETUP)/McData-setup.a2l: $(BSW_A2LS)  
$(DIR_SCRIPTS)/update_mcdata_a2l.py $(DIR_SCRIPTS)/update_copyright_info.py 
$(DIR_SCRIPTS)/merge_a2l_files.py $(DIR_TARGET)/$(PROJECT).odx-f 
$(DIR_A2L)/Merger.ini
            @echo "A2L        $@"

            @rm -rf $(DIR_A2LGEN)
            @rm -rf $(DIR_A2LLOGS)
            @rm -rf $(DIR_A2LGEN_SETUP)
            @rm -rf $(DIR_A2LGEN_UPDATE)
            @rm -rf $(DIR_A2LGEN_MODIFY)
            @rm -rf $(DIR_A2LGEN_CHECK)
            @rm -rf $(DIR_A2LGEN_SUPPLIER)
            @mkdir -p $(DIR_A2LGEN)
            @mkdir -p $(DIR_A2LLOGS)
            @mkdir -p $(DIR_A2LGEN_SETUP)
            @mkdir -p $(DIR_A2LGEN_UPDATE)
            @mkdir -p $(DIR_A2LGEN_MODIFY)
            @mkdir -p $(DIR_A2LGEN_CHECK)
            @mkdir -p $(DIR_A2LGEN_SUPPLIER)


            @find $(DIR_BSWPROJECT) -type f -name "*.a2l" | xargs -i cp {} 
$(DIR_A2LGEN_SETUP)



#TODO: IS this still needed
            @cp $(DIR_A2L)/_Master*.a2l $(DIR_A2LGEN_SETUP)

            @python $(DIR_SCRIPTS)/update_mcdata_a2l.py $(DIR_A2LGEN_SETUP)

            @python $(DIR_SCRIPTS)/update_copyright_info.py \
        -a $(DIR_A2LGEN_SETUP)/McData.a2l.patched \
        -o $(DIR_A2LGEN_SETUP)/McData-copyright.a2l


            @python $(DIR_SCRIPTS)/merge_two_files.py \
                        -f1 $(CAN_A2L) \
                        -f2 $(DIR_A2LGEN_SETUP)/McData-copyright.a2l  \
                        -sp '/end DAQ'   \
                        -ep '/end IF_DATA'  \
                        -op $(DIR_A2LGEN_SETUP)/McData-copyright-can.a2l

# When there are no supplier a2l files then the merge process doesn't need to 
be done.

ifneq ($(wildcard $(DIR_SUPPLIER)),)
            @find $(DIR_SUPPLIER) -type f -name "*.a2l" | xargs -i cp {} 
$(DIR_A2LGEN_SUPPLIER)
            $(eval SUPPLIER_A2l := $(sort $(shell find $(DIR_A2LGEN_SUPPLIER) 
-type f -name "*.a2l")))
            @echo "A2L        Supplier folder detected"
            @echo "Supplier a2l         $(SUPPLIER_A2l)"


# Just becuase there is a supplier folder does not mean it has a2l files.
ifeq ($(SUPPLIER_A2l),"*.a2l")
            @echo "A2L        Supplier a2l files found"

            @python $(DIR_SCRIPTS)/merge_a2l_files.py \
                        -s $(DIR_A2LGEN_SUPPLIER) \
                        -b a2l_file_list_supplier.opt \
                        -P $(DIR_A2L)/Merger.ini \
                        -M $(DIR_A2LGEN_SETUP)/McData-copyright-can.a2l \
                        -O $(DIR_A2LGEN_SETUP)/McData-setup.a2l \
                        -L $(DIR_A2LLOGS)/Log0-A2LMerger.log \
                        -g $(DIR_BUILDGEN)

            @ASAP2Merger.exe \
                        @$(DIR_BUILDGEN)/a2l_file_list_supplier.opt \
                        > $(subst 
$(DIR_A2LGEN_SETUP),$(DIR_A2LLOGS),$(@:.a2l=.log)) \
                        || echo "A2L        
$(DIR_A2LLOGS)/Log0-A2L-Supplier-Merger.log - Check for warnings/errors!"


else
            @cp $(DIR_A2LGEN_SETUP)/McData-copyright-can.a2l 
$(DIR_A2LGEN_SETUP)/McData-setup.a2l
            @echo "A2L        Supplier folder detected but no a2l files present"
endif

else
            @cp $(DIR_A2LGEN_SETUP)/McData-copyright-can.a2l 
$(DIR_A2LGEN_SETUP)/McData-setup.a2l
            @echo "A2L        Supplier folder not available"
endif

Ed L Wolf
Technical Advisor - Embedded Software
e.l.w...@cummins.com
Cummins Inc.
Mail Code: C7004
1460 National Road
Columbus, Indiana 47201
United States