On Tuesday, 7 March 2017 at 22:30:30 UTC, XavierAP wrote:
I'm talking about the conditional compilation keyword
"version", not about version strings. I've looked in DUB's help
and reference [1][2] but can't seem to find how to solve my
problem. On the command line it seems to be possible to specify
debug identifiers, but not version identifiers. [3]
It came up while trying to do something specific, so I'll
explain this. I'm learning and trying things, and I was playing
with dlib.core.memory. Before moving to the next thing I wanted
to try printMemoryLog(). This outputs memory debugging info,
only when compiled with version(MemoryDebug) [3].
I'm working with Visual D. However for 3rd party package
dependencies it's simpler to compile them with dub, and have VS
find the lib for my client project. Without the version
identifier, my program works: compiles, links to dlib, and runs
ok. Then I instruct VS to define version(MemoryDebug) for some
configuration. No matter how I re-run dub to build dlib, I get
linking errors from the additional functions defined in the
imported dlib source which aren't found in the binary lib.
I guess it's also possible to specify this by adding to the
dub.json file [2], but for me it's more flexible if I can leave
it alone and compile different versions from the command line
alone. But if the json is the only way please let me know.
Otherwise what am I missing? Thanks in advance.
[1] http://code.dlang.org/docs/commandline#build
[2] http://code.dlang.org/package-format?lang=json#version-specs
[3] https://dlang.org/spec/version.html#DebugCondition
[4]
https://github.com/gecko0307/dlib/blob/master/dlib/core/memory.d
Setting version identifiers is done by the `-version=ident`
command line flag (this is equivalent to `version = ident` at
source level) .
This should therefore be settable by the "dflags" dub
configuration setting.
The way I would do it would be to have a custom configuration
that sets "dflags" : [ "other normal flags", "-version=
MemoryDebug"]
and then build the MemoryDebug dub configuration.
Hope that makes sense.
