[Development] Notes on "Qt Build Systems" @ QtCon 2016

[Ch'Gans]

On 7 September 2016 at 01:47, Viktor Engelmann <viktor.engelmann at qt.io>
wrote:

>
> Am 06.09.2016 um 06:52 schrieb Ch'Gans:
>
> On 6 September 2016 at 16:20, Thiago Macieira <thiago.macieira at intel.com> <thiago.macieira at intel.com> wrote:
>
> Which is, in itself, an argument: why learn yet another buildsystem?
>
> ...
>
> Why learn yet another programming language?
>
> ...
>
> An average software developer knows about, says 10 to 20 programming
> languages, maybe even more depending on the definition of "language".
> Why should he/she knows just one build system?
>
> Chris
>
>
> My 2 cents: I want to spend my time on programming = being productive -
> Not waste my time fighting against an incredibly stupid build system...
>
> In my opinion, build systems in general haven't matured the way compilers
> have. Using classes and polymorphism, you can easily explain arbitrarily
> complex situations to compilers. I have yet to see a build system that
> understands more complex situations than "FILE1 IS OLDER THAN FILE2".
>

This is the Makefile approach, the whole Makefile thing is based on "FILE1
IS OLDER THAN FILE2" (and so is CMake). I think that Qbs is way more than
this. Maybe have a quick look at the documentation to realise how the
approach is completely different. Qbs understand the concept of classes and
polymorphism. In my projects, I define a "base class" (a Product in Qbs
terminology), and I can derive this product into more specific product, of
course derived products inherit from their base behaviours and properties,
and of course i can overwrite properties (inc, full overwrite, append,
prepend, transform, ...).

Qbs is really different.

See eg. http://doc.qt.io/qbs/language-introduction.html


They don't even have the slightest understanding of the commands they
> execute - they just slap some raw strings together (which YOU have to
> provide) and pass them to a shell. Oh, these raw strings were for a
> different OS? Or even just a different version of the same compiler on the
> same OS? well too bad...
>
> It kind of reminds me of this joke:
> http://www.ebaumsworld.com/jokes/blond-hole-diggers/80432143/
>

Will have to check this one at home, corporate "firewall" tells me: "404:
Access denied - Adult detected" ...

Chris


>
>
> Viktor
>
> --
>
>
> Viktor Engelmann
> Software Engineer
>
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