[CMake] file(GLOB …)

[Daniel Dekkers]

Yeah, ok, thanks.
It actually does go wrong. You intend "all model files with *.obj extension" and suddenly it starts including C++ object files as well.
But it's a bit of a pity to discard your "find all files in a specific category" script, included by all your apps, and start enumerating every file individually.

On Dec 23, 2011, at 5:20 PM, David Cole wrote:

> On Fri, Dec 23, 2011 at 10:45 AM, Rolf Eike Beer <eike at sf-mail.de> wrote:
>> Daniel Dekkers wrote:
>>> On 12/21/2011 05:25 PM, André Caron wrote:
>>> Get rid of the file(GLOB ...). Never, ever use it unless you know
>>> exactly what you're doing. Using it usually breaks something.
>>> 
>>> On Dec 21, 2011, at 5:59 PM, David Cole wrote:
>>> I agree with the advice to get rid of file(GLOB
>>> 
>>> What's the alternative. Enumerate all your filenames by hand?
>> 
>> Yes. This is no real problem as you need to do this only once. You can even
>> use the current CMake code to MESSAGE() out whatever CMake currently finds
>> using FILE(GLOB) and just copy that into your CMakeLists.txt
>> 
>> Eike
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> 
> 
> Just to clarify: the point of enumerating all your files in the
> CMakeLists.txt file is so that when you add or remove a file, the
> CMakeLists file changes, and can trigger a re-run of CMake based on
> the usual "make' file dependency tracking.
> 
> If you don't do it, and you use glob instead, then CMake does not know
> when you've added or removed files from the file system, and so cannot
> re-run automatically when (and only when) necessary.
> 
> To use glob *and* get this sort of behavior, we'd have to institute
> some sort of file-system-watcher that's always running. We don't
> really want to get into the business of monitoring your disk for file
> adds and removes...
> 
> 
> :-)
> David
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