Re: for sub in $(SUBMAKES); but $(SUBMAKES) is empty

[Noel Yap]

Short-term answer: you could change the action to test the contents of 
$(SUBMAKES) prior to doing the for loop:

        if [ ! -z "$(SUBMAKES)" ]
        then
                for sub in ...
                do
                done
        fi


Long-term answer: don't use recursive make.  See 
http://aegis.sourceforge.net/auug97.pdf.

HTH,
Noel

Alexander Farber wrote:

> Hi,
>
> does anybody please know, how to deal with the following problem?
> I have several GNU makefiles which call other makefiles like this:
>
>     MMPFILES =
>     SUBMAKES = $(foreach FILE, $(MMPFILES), $(FILE).$(PLAT).mbs)
>     all clean: $(SUBMAKES)
>             for sub in $(SUBMAKES); do \
>                     $(MAKE) -f $$sub $@; \
>             done
>
> For few of the makefiles the MMPFILES variable is empty (as above).
> This still works on some Linux-PC's here but fails on others:
>
>     boclu21:group {557} gmake -f Makefile.WINS.mbs
>     for sub in ; do \
>             gmake -f $sub all; \
>     done
>     /bin/sh: -c: line 1: syntax error near unexpected token `;'
>     /bin/sh: -c: line 1: `for sub in ; do  gmake -f $sub all;  done'
>     gmake: *** [all] Error 2
>
> Looks like the reason is the bash version. 
> The line below works fine on 2.05b.0(1):
>
>     bolinux72:calimero {321} for sub in; do echo gmake -f $sub all; done
>     bolinux72:calimero {322} 
>  
> But on the PC with the GNU bash 2.05.8(1) it fails:
>
>     boclu21:group {323} for sub in; do echo gmake -f $sub all; done
>     bash: syntax error near unexpected token `;'
>
> Any suggestions please?
>
> Regards
> Alex
>
>
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