[Scons-users] Rebuild changed targets

[Johan Holmberg]

On Fri, Mar 22, 2013 at 8:52 PM, Dirk Bächle <tshortik at gmx.de> wrote:

> Hi Mike,

>

>

> On 22.03.2013 19:26, Mike S. wrote:

>>

>> For some reason SCons doesn't regenerate an intermediate target if it's

>> modified. Am I doing something wrong?

>>

>

> no, you're doing nothing wrong. It's just the current behaviour of SCons,

> which doesn't track changes "from the outside" for targets. Things get only

> rebuilt if SCons detects that one of the sources (or inbound dependencies in

> general) changed.

> Please also refer to the recently opened issue

>

> http://scons.tigris.org/issues/show_bug.cgi?id=2892

>

> for more infos.

>

> Best regards,

>

> Dirk

>


This issue has been discussed before several times. Look for example
at the following thread from 2008:

    http://scons.tigris.org/ds/viewMessage.do?dsForumId=1272&dsMessageId=80582

An issue in the bug tracker was added then (but there has been no action to it):

    http://scons.tigris.org/issues/show_bug.cgi?id=2230

I think it is interesting that Cons (the Perl-program, around year
2000) worked better in this case. As the bug-report above says:

"We should add back in Cons-classic-style validation of target files using MD5
checksums stored in the .sconsign database."

/Johan Holmberg