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Cmake ignoring option and compiling with just one thread (lemmy.ml)

submitted 2 months ago by corvus@lemmy.ml to c/cpp@lemmy.ml

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Using the -j option is ignored. About two weeks ago I found out that cmake was compiling with only one thread but everything was ok a couple of months ago. I'm using Debian Trixie which is still in testing so I thought it was a bug, but after many system updates I didn't saw cmake being updated. I couldn't find anything after a some searches. Another related issue is that I recently compiled a new version of a qt app with an edit box to set the number of threads for running LLMs, after the last compilation it doesn't allow to set more than one. Any clue?

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[–] corvus@lemmy.ml 1 points 2 weeks ago

Both make and cmake are ignoring the j option and some of the software compiled with them also run in a single thread when they shouldn't, it seems a system problem, could it be an env variable?