RE: Automatic prerequisite generation

[Heiko Gerdau]

> -----Original Message-----
> From: Paul D. Smith [mailto:address@hidden On 
> Behalf Of Paul D. Smith
> Sent: Sunday, January 26, 2003 6:50 PM
> To: Heiko Gerdau
> Cc: address@hidden
> Subject: RE: Automatic prerequisite generation
> 
> 
> %% "Heiko Gerdau" <address@hidden> writes:
> 
>   hg> Here is one, maybe someone can help. The following Makefile does
>   hg> not work in a windows shell. Make trys to interpret the for loop
>   hg> and fails.  But I think make should just pass anything 
> is does not
>   hg> know to the shell. Is it a bug or do I miss something?
> 
>   hg> cleanall:
>   hg>         @for %d in (dir1 dir2) do $(MAKE) -k -r clean 
> srcdir="%d"
> 
> I don't know what the problem is, but make is _NOT_ trying to 
> interpret
> the for loop.
> 
> You will have to provide an error message or something before we can
> help further.

Thanks for your answer. Motivated by your hint I played around with the
for loop again and yes, you are right, its not the for loop on which
make fails, it's the substitution of the parameter %d. While playing
around I figured out that the following works:

@for %%d in (dir1 dir2) do $(MAKE) -k -r clean srcdir="%%d"

But this double (%%) is designed only for batch-files. The above command
does not work when typed in directly in a command shell. Is there a
particular reason why make uses the batchfile mode of shell commands?

Greetings
Heiko