[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
variable reassign value in same makefile
From: |
anand akhare |
Subject: |
variable reassign value in same makefile |
Date: |
Wed, 3 Apr 2024 09:52:31 +0000 |
Hello make team,
according to the info make page, recursive variable takes value at the time
it is used. However, no reference is there in doc what happens if value is
changed for the variable. To verify this I created small makefile as below and
on executing make trg1, it shows VAR value as jklmn. Output pasted below the
makefile. Pls clarify if value of variable is taken once in makefile as last
one assigned and rest are discarded. My idea is that intermediate values of
variable should be used until changed for target and recipe. Same behavior is
seen with non-recursive variables. (like VAR:=abc)
Regards
Anand
---------------------
VAR="abc"
trg1:
echo "trg1 ${VAR}"
VAR="def"
trg2:
echo ${VAR}
trg3:
echo ${VAR}
all: trg1 trg2 trg3
VAR="jklmn"
----------------------
output of make trg1:
$ make trg1
echo "trg1 "jklmn""
trg1 jklmn
- variable reassign value in same makefile,
anand akhare <=