On Wed, Jun 9, 2010 at 6:48 PM, Peng Yu <[email protected]> wrote:

 $(DIFF_BL2SEQ): %.diff.bl2seq: %.megablast.bl2seq %.blastn.bl2seq
       diff $^ > $@


> -rw------- 1 807 2010-06-09 11:34
> HWI-EAS11X_10097__4__1__15045__4929__0.blastn.bl2seq
> -rw------- 1 614 2010-06-09 11:34
> HWI-EAS11X_10097__4__1__15045__4929__0.megablast.bl2seq
>


> /make_test_long$ make
> diff HWI-EAS11X_10097__4__1__15045__4929__0.megablast.bl2seq
> HWI-EAS11X_10097__4__1__15045__4929__0.blastn.bl2seq >
> HWI-EAS11X_10097__4__1__15045__4929__0.diff.bl2seq
> make: *** [HWI-EAS11X_10097__4__1__15045__4929__0.diff.bl2seq] Error 1
>

it's failing because "diff" is ending with a non-zero error code. The files
are different (they have different sizes), so diff tells you so by exiting
with code 1. If you want to ignore an error code from the diff then do one
of:

 @diff ...
or:
  diff ...; true


-- 
----- stephan beal
http://wanderinghorse.net/home/stephan/
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