[CMake] Path to installed target

[Michael Wild]

On 01/12/2011 02:47 PM, David Cole wrote:
> On Wed, Jan 12, 2011 at 8:34 AM, Alexey Livshits <livchits at web.de> wrote:
> 
>>> Well, if you don't want any help fixing the real problem, then the
>>> answer is simple: CMake can't possibly give you that information because
>>> of DESTDIR.
>>
>> Thank you.
>>
>>> So, go and fix your project.
>>
>> I wish I could, but its not so simple. If you have an idea, just let me
>> know.
>>
>> --
>> BG,
>> Alexey
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> 
> 
> 
> Why can't you just set CMAKE_INSTALL_PREFIX to some path that you know and
> then reference that from your tests that run the installed version?
> 
> 
> DESTDIR will never work on Windows with drive letters in the way:
> (for example, if DESTDIR=D:\, and your install rules install some component
> to an absolute path, say C:\Program Files\Whatever, then the resulting
> attempt would go to "D:\C:\Pro..." which is obviously non-sensical.)
> 
> DESTDIR simply does not mix with Windows drive letters, so there always has
> to be another way to attack the problem when Windows is a consideration.
> 
> Since Windows is always a consideration for the vast majority of CMake-based
> projects, DESTDIR is typically avoided as a general technique (except as
> guarded by appropriate if(NOT WIN32) usage...)
> 
> 
> Does that help?
> 
> David
> 

Thing is, you can't *rely* on DESTDIR *not* being used by the user of
your project. If a user shoots himself in the foot, that's his fault,
but when designing your test architecture you IMHO shouldn't make the
use of DESTDIR impossible. I'm sure Debian/Ubuntu/the/whole/zoo would
object to that...

Michael