[Scons-users] Grouped dependency

[Dirk Bächle]

Hi,

On 26.04.2016 01:51, William Blevins wrote:
> Arvid,
>
> You cannot make them all depend on each other because that will create dependency cycles.

hmmm, is that really true? What if Arvid would write his own Object builder, taking a list of sources as argument...but it would 
always only process the first list entry to actually produce (=emit) an object?
Then one could wrap this into an ObjectGroup pseudoBuilder, such that on

   ObjectGroup(['a.cpp','b.cpp','c.cpp'])

it would internally call

   ArvidsObject('a.o', ['a.cpp', 'b.cpp', 'c.cpp'])
   ArvidsObject('b.o', ['b.cpp', 'a.cpp', 'c.cpp'])
   ArvidsObject('c.o', ['c.cpp', 'b.cpp', 'a.cpp'])

. As long as all source files initially exist and don't have to be generated by SCons itself this could actually work.

Just a quick gedankenexperiment...

Best regards,

Dirk