[Scons-dev] debugging signatures

[Tom Tanner (BLOOMBERG/ LONDON)]

But thats referring to $( $) not ${ $}. I think it'd be wrong to put the sources in the signature calculation as they are probably already in the dependencies, but I don't know if it does or doesn't

----- Original Message -----
From: bill at baddogconsulting.com
To: TOM TANNER (BLOOMBERG/ LONDON), scons-dev at scons.org
At: Sep 20 2012 18:18:09

Tom,

Everything which isn't wrapped in $( $)... from manpage:
The special pseudo-variables*$(*and*$)*may be used to surround parts of 
a command line that may change/without/causing a rebuild--that is, which 
are not included in the signature of target files built with this 
command. All text between*$(*and*$)*will be removed from the command 
line before it is added to file signatures, and the*$(*and*$)*will be 
removed before the command is executed. For example, the command line:

-Bill

On 09/20/2012 12:27 AM, Tom Tanner (BLOOMBERG/ LONDON) wrote:

> The other thing I'm not sure about is if I have a build script that says

>     '$PERL -w ${SOURCES[1]} blah blah blah ${SOURCE.base}'

>

> how much of that gets put into the the signature when it's being calculated.

>

> ----- Original Message -----

> From: bill at baddogconsulting.com

> To: TOM TANNER (BLOOMBERG/ LONDON), scons-dev at scons.org

> At: Sep 19 2012 18:50:19

>

> Tom,

>

> Wouldn't grep'ing your SConstruct/SConscripts find this for you?

>

> -Bill

> On Sep 19, 2012, at 10:00 AM, TOM TANNER (BLOOMBERG/ LONDON) <ttanner2 at bloomberg.net> wrote:

>

>> Due to not really paying attention when I was developing some of my scripts, I have some command lines that contain names with sort-of-absolute paths. That is to say its /dev/git/<username>/<projectname>/scripts/somescript

>>

>> Unsurprisiingly, this causes the build not to use the cached version from /dev/git/<someelses>/<project>/scripts/somescript

>>

>> So I can see how I can fix this by using ${ scriptname $} and making sure scriptname is referenced as a dependency.

>>

>> However, how can I find out how many places I've done this in? In particular, is there some why of printing the contents of an action when you're calculating the signature, so I can scan for ones that have /dev/git in them?

>>

>> Thanks

>> _______________________________________________

>> Scons-dev mailing list

>> Scons-dev at scons.org

>> http://two.pairlist.net/mailman/listinfo/scons-dev

>



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