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befc788bee
We already pass MAKEOPTS parallelism to the testsuite's -j option. Some of the tests also internally use OpenMP, and implicitly parallelize according to nproc. This consistently broke testing on the arm devbox, where nproc == 96, even if using low -j values like "10": ``` libgomp: Thread creation failed: Resource temporarily unavailable ``` We can't get libgomp to subscribe to a jobserver. We don't even know if e.g. steve is running, and cython itself doesn't use GNU Make (which would make its own jobserver). But we can reasonably assume cython's already-parallel testsuite will run as much parallelism as needed. We don't need OpenMP-based over-parallelization, it will always just cause harm. Disable it entirely. Signed-off-by: Eli Schwartz <eschwartz@gentoo.org>