On Sonntag, 30. Juni 2019 16:45:19 CEST Seth Hillbrand wrote: > Hi Devs- > > I'm stuck at a decision on this bug and would like some opinions from > others. > > The background is the GNU make is not intelligent about parallel builds > and doesn't merge generated targets. So we need to serialize the > dependencies but this breaks everytime we include the lexer header file > in a different object or use the generated DSO for more than one target. > Eventually, we have sufficient parallel processes that the header gets > generated twice. If this happens at the same time, the build breaks.
I have seen errors like this several times, and every time it has been an error in the underlying cmake rules. Most of the times this happens when mixing custom_targets and custom_commands, and specifying the wrong dependency (dependency on a file when a target dependency should be used, and vice versa). kicad-doc had a problem in this regard as well, but it is fine now. One obvious thing that is fishy is generating the files in CMAKE_CURRENT_SOURCE_DIR - generated files should *always* go into CMAKE_CURRENT_BINARY_DIR. Kind regards, Stefan -- Stefan Brüns / Bergstraße 21 / 52062 Aachen home: +49 241 53809034 mobile: +49 151 50412019
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