[cmake-developers] [CMake 0015199]: Better error message for export conflicts

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=15199 
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Reported By:                Nico Schlömer
Assigned To:                
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Project:                    CMake
Issue ID:                   15199
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2014-10-09 05:11 EDT
Last Modified:              2014-10-09 05:11 EDT
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Summary:                    Better error message for export conflicts
Description: 
If an export target depends on another target, that other target must either be

 * in the same export set, or
 * in exactly one other export set.

If it is not in the same export set and in more than one other export set, CMake
reports
```
CMake Error: install(EXPORT "A" ...) includes target "b" which requires target
"c" that is not in this export set, but 5 times in others.
```
This error message is somewhat misleading; one could think that "c" must be in
the same export set as "b".

Perhaps a less ambiguous wording would be:
```
CMake Error: install(EXPORT "A" ...) includes target "b" which requires target
"c" that is 
  * not in this export set, and
  * in more than one other export set (5).
```
I'm sure we can do even better than that.
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Issue History 
Date Modified    Username       Field                    Change               
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2014-10-09 05:11 Nico Schlömer  New Issue                                    
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