Patch for KDE4Macros to use extra target on Windows

[Christian Ehrlicher]

Matthias Kretz schrieb:
> On Friday 18 July 2008 23:38:45 Brad King wrote:
>> Matthias Kretz wrote:
>>> attached is a patch to use the new automoc macro which adds a new target
>>> per default on Windows.
>> Can someone point me to discussion of the original problem, please?
> 
> I think most of this was in german and private mail. So here's a summary:
> 
> I changed the automoc4 invocation (ADD_CUSTOM_COMMAND) to only depend on one 
> file (i.e. <target>_automoc.cpp.files). I wanted to achieve that automoc4 gets 
> called unconditionally, but without creating a new target. That's why a run of 
> automoc4 now touches the file it depends on, one second after it touches its 
> output file.
> - With that make does what I want: execute automoc4 once per target on every 
> call to make. If automoc4 decides there's nothing to do it doesn't touch any 
> files and so make decides not to recompile the output file of automoc4.
> - nmake seems to behave different in the last point: it thinks that if the 
> output of automoc4 is a source file and automoc4 got called it has to 
> recompile that source file, no matter whether automoc4 changed the timestamp 
> or not. IIUC nmake internally updates the timestamp of the output source file 
> and doesn't even look whether that corresponds with what happened on the 
> filesystem.
> 
Correct. You can see this when running nmake in verbose mode.


Christian

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