CODEWITHSUNDEEP
makefile
August Karlstrom
August Karlstrom

Reputation: 11377

How do I execute each command in a list?

If I have a list of n commands, c = c1 ... cn, how can I execute them in order for a given target? I tried the foreach construct 

$(foreach x,$(c),./$(x))

but that puts all the commands on one line. Any clues?

Upvotes: 11

Views: 11484

Answers (2)

FooF
FooF

Reputation: 4462

If there is no need to check for success, then adding semicolon should work:

$(foreach x,$c,./$(x);)

If you need to fail if one of the command in the list returns failure, you need to break it in steps. Instead of directly executing the commands, we wrap the execution in a make function:

define execute-command
$(1)

endef

execute-list:
        $(foreach x,$(c),$(call execute-command,./$(x)))

Upvotes: 15

bobbogo
bobbogo

Reputation: 15493

You identified the problem (“but that puts all the commands on one line”). You just need to append a newline whenever you expand $x in your loop.

define \n


endef

Now simply use $(foreach x,$c,./$(x)${\n}) in your recipe.

Upvotes: 16

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