[Scons-users] clarification on Depends()

[Bill Deegan]

I think you mistyped your second Depend example?
Shouldn't it be this?
Depends('hello.o',['fake.txt'])

On Mon, Jun 4, 2018 at 9:05 PM, Jason Kenny <dragon512 at live.com> wrote:

> HI,
>
>
>
> I just want to clarify behavior of Depends() in SCons.
>
>
>
> I have a small sample:
>
>
>
> Depends(["hello.c")],["fake.txt"])
>
> Program("hello","hello.c")
>
>
>
>
>
> If I run this sample “hello” will build. If I change fake.txt, nothing
> will rebuild.
>
>
>
> I have a tree like this:
>
>
>
> +-hello
>
>   | +-hello.o
>
>   | | +-hello.c
>
>   | | +-fake.txt
>
>   | | +-/usr/bin/gcc
>
>   | +-/usr/bin/gcc
>
>
>
> If I change the sample to this ( depends() is not hello.o vs hello.c)
>
>
>
> Depends(["hello.c")],["fake.txt"])
>
> Program("hello","hello.c")
>
>
>
> Now when I change fake.txt hello.o will rebuild. The tree here looks like:
>
>
>
> +-hello
>
>   | +-hello.o
>
>   | | +-hello.c
>
>   | | +-fake.txt
>
>   | | +-/usr/bin/gcc
>
>   | +-/usr/bin/gcc
>
>
>
> Is this right… I have to know the target of a builder to use? I cannot use
> the source of a builder?
>
>
>
> Jason
>
>
>
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>
>
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