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Editorial Team
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Asked: 2026-06-11T06:32:55+00:00

I’m trying to update the files in a directory with a command like: env.Command(Dir(./targetdir/),

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I’m trying to update the files in a directory with a command like:

env.Command(Dir("./targetdir/"),
            ["./targetdir/file0", "./targetdir/file1", ...],
            "./somescript.sh $TARGET")

Scons keeps telling me that ./targetdir/ is up to date, even though I’ve modified by hand ./targetdir/file0.

Isn’t scons supposed to know that, since one source file has changed, the command should be run? Is there a particularity with the fact that the target is a directory?

I want to run the command ./somescript.sh ./targetdir/ whenever any of the file in ./targetdir/ changes. How can I do it?

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1 Answer

  1. Editorial Team

    The problem here is you have no target. Scons can’t store information about dependency without having target and source.
    So, one of solution use explicit target.

    mycmd = Command('some_target', [], ['script.sh targetdir', Touch('$TARGET')])
or 
mycmd = Command('some_target', [], 'script.sh targetdir > $TARGET')
Depends(mycmd, Glob('targetdir/*'))

    Now, scons have target named some_target and known that it depends from files in targetdir. IMHO, best way create special builder/wrapper for it and use variant dirs to store targets there.

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