[cmake-developers] [CMake 0015419]: QtAutogen does not regenerate moc file when moc inputs change

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=15419 
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Reported By:                Stephen Kelly
Assigned To:                
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Project:                    CMake
Issue ID:                   15419
Category:                   CMake
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2015-02-25 22:26 CET
Last Modified:              2015-02-25 22:26 CET
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Summary:                    QtAutogen does not regenerate moc file when moc
inputs change
Description: 

There are two file-inputs to moc in Qt 5 - the C++ header file being moc'd, and
the optional JSON metadata files referenced therein. CMake performs file
timestamp comparison on the C++ header file during autogen, but does not do
similar tracking for the JSON files.

CMake should parse the C++ header file for the Q_PLUGIN_METADATA macro FILE
argument, and add the list of referenced JSON files to the generated
AutogenInfo.cmake file. The contents of this list should then be
file-timestamp-checked. 

Similar logic for lists of input files affecting the tool input was added for
qrc files in commit v3.2.0-rc1~480^2 (QtAutogen: Regenerate qrc files if their
input changes (http://public.kitware.com/Bug/view.php?id=15074), 2014-09-17),
and the solution to this issue with the moc tool will be similar.

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Issue History 
Date Modified    Username       Field                    Change               
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2015-02-25 22:26 Stephen Kelly  New Issue                                    
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