On Sat, Mar 30, 2019 at 08:11:39PM +0100, Pavel Machek wrote: > On Sat 2019-03-30 19:52:06, Jacek Anaszewski wrote: > > On 3/29/19 10:01 PM, Jacek Anaszewski wrote: > > >Hi, > > > > > >I tried to create a macro for automatic composition of "-N" suffixed LED > > >functions (where N is a number). Unfortunately, the preprocessor > > >of the dtc compiler seems not to accept string concatenation. > > >I.e. it is not possible to to the following assignment: > > > > s/to to/to do/ > > > > > > > >function = "hdd""-1" > > > > To clarify - "function" is a new property to be introduced in the common > > LED bindings. And in fact, probably the preprocessor has nothing to do > > with that string concatenation it's just Device Tree compiler > > shortcoming. > > Stack overflow says: > > Concatenation of adjacent string litterals isn't a feature of the > preprocessor, it is a feature of the core languages (both C and > C++). You could write: > > And that's accurate, AFAICT. Looks like dtc does not have that > feature. That's correct. I've been thinking for a while about adding some sort of string concatenation in dtc, as well as possibly other sorts of string expressions. TBH, I've chiefly been hung up on the syntax. The preferred form would be as C - just put the strings next to each other, but I think that might cause complications in the grammar. -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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