Re: [Boost-build] Need Help with generators

From: Schnyder Franz (fschnyder_at_[hidden])
Date: 2005-11-08 02:06:19

> 
> What you want is CPP -> LST -> OBJ and C -> LST -> OBJ, correct? When 
> compiling a C file with VxWorks, I'm assuming you don't need to "munch" 
> it. If so, why don't you have C -> OBJ as normal, and
> 
>     CPP -> C -> OBJ
>         ^^ munch here
> 
> then you could do the munching in the vxworks.c++ action only. This 
> would remove the need for an LST intermediary. Or am I missing something?
> 

No not exactly, sorry I did explain ist very precise in my fist mail. 
Here is what I need to do for VxWorks:

C and C++ files are compiled normal with 'CPP -> OBJ' and 'C -> OBJ'

When creating an "executable" (it's more an loadable module for the 
taget than an exe) all the object files created from a C++ source file 
must be munched. The munching needs all these Objects for one 
executeable at ones and creates one C file.
This resulting C file can be compiled with normal 'C-> OBJ' and and must 
be included to the files which are linked into the "executable".

The munching looks for all static objects and creates a function to call 
all the constructors and destructors for these. This functions are 
called during the loading and unloading of the "executable".

So I created the the composing list rule 'OBJ -> LST' which collects all 
Objects and since muching doesn't care if there are also Objects from C 
files in the list I just added all objects. Then created the munch rule 
    'LST -> C'. I compiled the resulting file and then linked all the 
objects from the lst file and the additional object from the munching 
into an "executable".
Therefore think ...

 >>generators.register-composing vxworks.lst : OBJ STATIC_LIB : LST
 >>                                           : <toolset>vxworks ;
 >
 >
 > this is: STATIC_LIB OBJ --> LST
 > try:
 >    generators.register-composing vxworks.lst : LST : OBJ STATIC_LIB
 >                                              : <toolset>vxworks ;
 >    # LST --> STATIC_LIB OBJ
 >
 >
... I need 'STATIC_LIB OBJ --> LST' ?

 >>generators.register-standard vxworks.munch : LST : C :
 >                                     <toolset>vxworks ;
 >
 >
 > this is: LST --> C
 > try:
 >    generators.register-standard vxworks.munch : LST : C : 
<toolset>vxworks ;
 >    # C --> LST
 >
... and I need 'LST --> C' or should I create the from the munching 
resulting C in a different way.

Thanks for your help.

- Franz