Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
scripts/jobserver-exec: parse the last --jobserver-auth= option
In the GNU Make manual, the section "Sharing Job Slots with GNU make"
says:
Be aware that the MAKEFLAGS variable may contain multiple instances
of the --jobserver-auth= option. Only the last instance is relevant.
Take the last element of the array, not the first.
Link: https://www.gnu.org/software/make/manual/html_node/Job-Slots.html
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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scripts/jobserver-exec
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scripts/jobserver-exec
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opts = [x for x in flags.split(" ") if x.startswith("--jobserver")]
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# Parse out R,W file descriptor numbers and set them nonblocking.
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fds = opts[0].split("=", 1)[1]
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# If the MAKEFLAGS variable contains multiple instances of the
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# --jobserver-auth= option, the last one is relevant.
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fds = opts[-1].split("=", 1)[1]
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reader, writer = [int(x) for x in fds.split(",", 1)]
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# Open a private copy of reader to avoid setting nonblocking
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# on an unexpecting process with the same reader fd.