hello cmake community, just re-pasting what I've already posted on Qt forums:
I'am experiencing some abysmal compilation time when it comes to building a relatively small Qt5 app in windows. The problem resembles alot the reported here issue : http://lists.qt-project.org/pipermail/interest/2015-January/014812.html In case one uses cmake+qt5 to build on windows and have additional projects (in my case VTK/ITK/Boost) moc.exe will go first over all visible to cmake paths, some windows ones, then finally in C:/Qt to find its headers. So for generating one cpp file from moc.exe I end up with a few million IO operations! ine can use procmon.exe to inspect moc.exe on windows. Rebuilding from scratch takes ages compared to what takes <5min before switching to Qt :(((( MOC cannot go in parallel (pre-processor!!!) at that point I'm faced with a few options to explore, however I expect something of official HOW-TO on cmake+qt integration. It might be a Qt5 or/and Cmake issue, hard to tell, since I'm not expert in either. Can someone with more inside take a look please !?
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