Jordan Galby b1f896e6c7 Fix non-parallel make under depfile jobserver (#32862) ... When a package asks for non-parallel make, we need to force `make -j1` because just doing `make` will run in parallel under jobserver (e.g. `spack env depfile`). We now always add `-j1` when asked for a non-parallel execution (even if there is no jobserver). And each `MakeExecutable` can now ask for jobserver support or not. For example: the default `ninja` does not support jobserver so spack applies the default `-j`, but `ninja@kitware` or `ninja-fortran` does, so spack doesn't add `-j`. Tips: you can run `SPACK_INSTALL_FLAGS=-j1 make -f spack-env-depfile.make -j8` to avoid massive job-spawning because of build tools that don't support jobserver (ninja).		2022-11-04 02:05:22 -07:00
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spack	Fix non-parallel make under depfile jobserver (#32862)	2022-11-04 02:05:22 -07:00