Commit 8c008988 authored by Martin Liska's avatar Martin Liska Committed by Masahiro Yamada
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scripts: support GNU make 4.4 in jobserver-exec 

Starting with GNU make 4.4, --jobserver-auth newly uses named
pipe (fifo) instead of part of opened file descriptors:
https://www.gnu.org/software/make/manual/html_node/POSIX-Jobserver.html



Support also the new format.

Signed-off-by: default avatarMartin Liska <mliska@suse.cz>
Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent aedee9e8

scripts/jobserver-exec

+14 −5
Original line number Diff line number Diff line
@@ -26,6 +26,15 @@ try: 
	# If the MAKEFLAGS variable contains multiple instances of the

	# --jobserver-auth= option, the last one is relevant.

	fds = opts[-1].split("=", 1)[1]



	# Starting with GNU Make 4.4, named pipes are used for reader and writer.

	# Example argument: --jobserver-auth=fifo:/tmp/GMfifo8134

	_, _, path = fds.partition('fifo:')



	if path:

		reader = os.open(path, os.O_RDONLY | os.O_NONBLOCK)

		writer = os.open(path, os.O_WRONLY)

	else:

		reader, writer = [int(x) for x in fds.split(",", 1)]

		# Open a private copy of reader to avoid setting nonblocking

		# on an unexpecting process with the same reader fd.