I’m compiling Qt from source, but I don’t want to extract the source each time I want to build it.
How can I clean previous configuration with the configure tool?
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For Qt4 and earlier, try this:
You can then re-configure and re-compile QT.
As noted in the comments, this no longer works in QT 5. This is due to the fact that the Qt project now uses separate sub-modules for different parts. If you have a local clone of the Qt git repos, you can try calling this from the main Qt directory:
As noted here, there may be some problems if you have a downloaded source archive. The link I posted suggests using a shadow build instead so the process of making a clean configuration is as simple as configuring to build at a new shadow build destination.