Hi Noel, > I'd need to "sell" the patch to our GNU make maintainers; it would need to > pass certain criteria before I can even suggest it.
Let me know if I can be of any help. > Are there any downsides to using the patch (eg builds take considerably > longer, ...)? I didn't notice significant downside but it is not free either. Patch makes make variable-expand implicit rule's prerequisites for every time there is a match (but not every time implicit rule is tried). Since most rules don't use double expansion this second expansion is just an additional search in a (usually) not very long string for '$'. I use it extensively in my build system to build directories and it works really well. > Have you submitted the patch to the GNU make project (via savannah.org I > believe)? Well, I found this to be pretty useless. I submitted a patch for $(lastword ) which is a very simple patch with a very straightforward (IMO) argumentation and there is a precedent ( $(firstword) ). Since I submitted it a few months ago I never heard a word back. Also, I saw a far more bizarre features added to make meantime (like SysV $$@ & friends) so it makes me wonder... So I started my own patch-set with hope that if more people find it useful we will be able to get it into official make. > Has this feature been discussed on this list? I haven't seen anybody express interest in such a feature (until now) so there was no point in discussion. hth, -boris
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