CODEWITHSUNDEEP
linuxmakefilegnu-make
Raiyan Kabir
Raiyan Kabir

Reputation: 1016

Makefile: need to executed commands stored in a list

I was trying to execute the following code.

    LIST = 0 1 3 4 5
    targets = $(addprefix rambo, $(LIST))

    all: $(targets)

    $(targets): rambo%: rambo%.sh
        @echo "" > tests/runners/$<

The error I am getting is as follows,

    make[1]:*** No rule to make target `rambo0.sh', needed by `rambo0'. Stop.

I'm not sure what is wrong with the code. Basically, I'm trying to create a file dynamically by executing a makefile.

Thanks in advance.

Upvotes: 0

Views: 27

Answers (1)

Etan Reisner
Etan Reisner

Reputation: 80992

That error means you don't have a rambo0.sh file in the current directory.

The syntax for a static pattern rule is targets ...: target-pattern: prereq-patterns ....

Where targets are the literal target names, and

[e]ach target is matched against the target-pattern to extract a part of the target name, called the stem. This stem is substituted into each of the prereq-patterns to make the prerequisite names (one from each prereq-pattern).

Since that seems to be what you are trying to create with that rule I believe you want:

targets = $(addsuffix .sh,$(addprefix rambo,$(LIST)))
# Alternatively
# targets = $(patsubst %,rambo%.sh,$(LIST))

$(targets): rambo%.sh :

possibly

$(targets): rambo%.sh : rambo%

if rambo% is a file or directory that already exists and is a prerequisite of the shell script file you are trying to create.

Upvotes: 1

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