Am 10.09.2015 um 22:44 schröbte Reuben Thomas:
> A user just reported that my cw rock needs automake to build. I'm not sure
> why this hadn't struck me before!
>
> The problem, within luarocks, is that there's no way to express this
> dependency.
>
> Is there any standard way to address these sort of out-of-band build
> dependencies? (I can't find anything in the docs.)
>
> I guess it would be a start to be able to depend on the existence of a
> binary in PATH, and a very close second to have a mechanism for specifying
> ways to extract particular binaries' versions and depend on versions as for
> libraries.
>
> Apologies if I've overlooked something; I have a feeling I must have…
You can specify binaries as external dependencies. E.g. I have the
following in one of my recent projects:
external_dependencies = {
FLTK = {
program = "fltk-config"
}
}
build = {
type = "make",
variables = {
FLTK_CONFIG = "$(FLTK_BINDIR)/fltk-config",
-- ...
}
}
and I run `${FLTK_CONFIG} --cxxflags` in my Makefile.
The binaries aren't looked up in PATH though, just the usual `/usr/bin`
and `/usr/local/bin` from `external_deps_dirs`. Of course you can set
`FLTK_DIR`/`FLTK_BINDIR` on the command line, too. Extracting some
version number is probably not possible in general.
Philipp
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