"Adam D. Ruppe" <destructiona...@gmail.com> wrote in message
news:it97ee$ome$1...@digitalmars.com...
> Nick Sabalausky wrote:
>> RDMD never needs to invoke DMD more than twice.
>
> rdmd also doesn't attempt to download libraries.
I know, but that's beside the point. You may need a few invocations of DMD
or RDMD to *get* dependencies you don't already have (but *at most* only one
per library, less if any part of the chain has more than one dependency) but
*once you have them*, then *one* call to DMD will find *all* the files
needed.
I'll use an example:
MyApp:
- main.d: Imports 'helper' and 'libA.all'
- helper.d: Imports 'libB.all'
LibA:
- libA/all.d: Imports 'libA.util'
- libA/util.d: Imports nothing of interest.
LibB:
- libB/all.d: Imports 'libB.baz'
- libB/baz.d: Imports 'libC'
LibC:
- libC.d: Imports nothing of interest.
Now, you *only* have the source for MyApp, none of the libs. You built it:
$ nicks-build-tool main.d -of:MyApp.exe
Invoking dmd to find deps of main.d...
Deps: helper, libA.all, libB.all
Missing: libA.all, libB.all
Checking if deps can be downloaded...
libA.all: Exists in LibA
libB.all: Exists in LibB
Downloading LibA...done
Downloading LibB...done
Invoking dmd to find deps of main.d...
Deps: helper, libA.all, libB.all,
libA.util, libB.baz, libC
Missing: libC
Checking if deps can be downloaded...
libC.d: Exists in LibC
Downloading LibC...done
Invoking dmd to find deps of main.d...
Deps: helper, libA.all, libB.all,
libA.util, libB.baz, libC
Missing: {none}
Checking if need to rebuild...yes, MyApp.exe missing
Invoking dmd to compile everything...
Done.
Now you make changes to MyApp and want to build again:
$ nicks-build-tool main.d -of:MyApp.exe
Invoking dmd to find deps of main.d...
Deps: helper, libA.all, libB.all,
libA.util, libB.baz, libC
Missing: {none}
Checking if need to rebuild...yes, main.d and helper.d changed.
Invoking dmd to compile everything...
Done.
DMD only needs to be invoked a small handful of times, and only when a
library is missing.
However, IMO, it would be far better to have dependency metadata for each
lib/project rather than picking through the source and inferring packages.
