CODEWITHSUNDEEP
makefilegnu-make
Jurasic
Jurasic

Reputation: 1956

GNU make parse variable

I want to parse variable in makefile, this variable has next syntax:

VARIABLE=folder1=file1,folder2=file2,...,folderN=fileN

and here what I want to do with it: 

ifdef VARIABLE
#
# here I want to assign FOLDER to "folder1, folder2... folderN" in the loop
# and then compare it with current folder
#  
ifeq ($(FOLDER),$(CURRENT_FOLDER))
#
# if true assign FILE1=file1 
#
export MYFILE := FILE1
endif
else
export MYFILE = default_name
endif

How can I do that?

Upvotes: 0

Views: 677

Answers (1)

Olaf Dietsche
Olaf Dietsche

Reputation: 74058

If you change the separator , to some other, : for example 

VARIABLE=folder1=file1:folder2=file2:...:folderN=fileN

you can split the list 

L=$(subst :, ,$(VARIABLE))

extract the folder if any 

E=$(filter $(CURRENT_FOLDER)=%, $L)

and assign the last part after = to MYFILE 

ifneq ($E,)
export MYFILE := $(patsubst $(CURRENT_FOLDER)=%,%,$E)
else
export MYFILE = default_name
endif

Upvotes: 1

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