While writing a make file, I've just hit the situation where I need to
write a rule of the form:
a b c d e: x y z
generate_abcde
Unfortunately, this doesn't work as the semantics are equivalent to the
rules where the targets are separate -- that is generate_abcde gets run
multiple times.
I've done some poking around, and found that a couple of solutions,
either with pattern rules or otherwise by creating an intermediate file,
as described here:
http://lists.gnu.org/archive/html/help-make/2007-04/msg00021.html
My understanding is that there is no other way to do this, but I was
wondering why this was the case; would it be possible to support to make
for this directly?
Phil
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