How can I assign new value to a variable in a makefile after ignoring an error using ||

Asked Apr 13 '18 at 12:58

Active Apr 13 '18 at 13:40

Viewed 42 times

Lets say, I want to do something like this in my makefile.

myVar="Value1"

define compare_with_expect_file
    cat $(filePath1) | diff -c ${filePath2} || myVar+=$(myVar)
    echo $(myVar) // want it to be changed
endef

but this part does not work:

myVar+=$(myVar)

I am not able to change value of a variable that is placed after ||

How can I make it work?

edited Apr 13 '18 at 13:40

asked Apr 13 '18 at 12:58

Viacheslav On

try \|\| like this. – Muhammed Tayyib Kılıç Apr 13 '18 at 13:01
thanx for the reply, but it does not work – Viacheslav On Apr 13 '18 at 13:48
https://stackoverflow.com/questions/4181703/how-to-concatenate-string-variables-in-bash try this for concat string – Muhammed Tayyib Kılıç Apr 13 '18 at 15:28
Your question is unclear. What value do you want the variable to have, and in what circumstances? – Beta Apr 13 '18 at 18:49
when there is an error in the line, I want to change value of $myVar. Value of variable can be different, I does not metter in this case. The problem is that it is not possible to change value of variable at all – Viacheslav On Apr 16 '18 at 08:06

How can I assign new value to a variable in a makefile after ignoring an error using ||

0 Answers0