[Qt-interest] qmake "-=" operator on the command line

[Thiago Macieira]

On Sunday, 29 de May de 2011 21:29:14 Nikos Chantziaras wrote:
> I say "intuitive" since what most people would expect (I guess) is for 
> -= to remove something that was set in the project file but without the 
> need to edit it.  IMO this should be the default anyway, since 
> command-line options usually have the highest priority over anything 
> else (not a qmake-specific observation, but general Unix philosophy, 
> where you have hard-coded defaults, conf files, env vars, and 
> command-line options, in that order.)

I think qmake is working just like make: the options set on the command-line 
override the defaults and the environment, but are visible for use in the .pro 
file's parsing.

That way, you can do:

	qmake FOO=bar

And process the value of FOO in the .pro file:
contains(FOO, bar): SOURCES += foo.cpp

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
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