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Subject: Re: [boost] CMake - one more time
From: Gavin Lambert (gavinl_at_[hidden])
Date: 2016-04-27 21:47:25

On 27/04/2016 06:02, Robert Ramey wrote:
> LOL - see my rant about option() above. it's not clear where one should
> put it, how it interacts with option placed somewhere else, whether the
> options are string variables or some sort of instrinsic, what is the
> default, how it interacts with someone placing the option on the command
> line. This is just a tiny simple example and a very simple one compared
> to others. One could supply pages and pages and pages of such examples
> - but thankfully one is sufficient.

It seems fairly obvious how they're defined from that.

Usually custom options would be activated with -d and tested for with if
(, but
BUILD_SHARED_LIBS in particular
alters the behaviour of add_library
( when
defined (via any means).

ie. add_library(name STATIC sources...) will always build a static library.
     add_library(name SHARED sources...) will always build a shared library.
     add_library(name sources...) will build a shared library if
BUILD_SHARED_LIBS is ON, otherwise a static library.

This information was not hard to find.

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