I read this question: Makefile: $subst in dependency list, but I still can't make my shell script work correctly.
I have a makefile with a line with the contents:
#@public_detailed@|test_create|Syntax: commoncmdsyntax test_create test_name=<test-name>A target runs a multiline bash script, where the commoncmdsyntax must be replaced by a string containing words and spaces.
In the script, I use cut to assign to a variable desc the following string:
Syntax: commoncmdsyntax test_create test_name=<test-name>The problem is that commoncmdsyntax is not replaced by new text here:
$(subst commoncmdsyntax,new text,$$desc)I also tried to replace it by a single word, like XX, but it also does not work.
1 Answer
The subst function (as in $(subst commoncmdsyntax,new text,$$desc)) is a Make function, so Make will perform the substitution before running any rule and therefore before your script assigns a value to desc. So even if secondary expansion worked the way you seem to think it will, this approach would still fail.
If you want to perform a substitution within something made by a shell script (in a recipe), the sensible way is to do so within the recipe:
echo $dest | sed 's/commoncmdsyntax/new text/'We can give you a more detailed solution if you give us a minimal complete example of the problem.
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