Running tests with top-level parallel builds can speed up running some
tests, expecially those that have a lot of packages like the systemd
init tests.
Trigger TLPB when the configuration enables per-package directories.
We're using the jlevel argument, which normally is used for BR2_JLEVEL
as the value for calling make -j<N> at the top-level. In fact,
BR2_JLEVEL is "unused" when using TLPB, because the top-level make
acts as the job server that distributes tokens to sub-makes (except
for the few build systems like waf or scons that don't support this),
so it's really the top-level make -j<N> that determines the level of
parallelism, and BR2_JLEVEL doesn't really have an effect.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[Thomas: extend explanation a bit]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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