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Date: Sun, 17 May 2020 12:33:13 +0000 From: David Laight <David.Laight@...LAB.COM> To: 'Masahiro Yamada' <masahiroy@...nel.org>, "linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org> CC: Jessica Yu <jeyu@...nel.org>, Michal Marek <michal.lkml@...kovi.net>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: RE: [PATCH 09/29] kbuild: disallow multi-word in M= or KBUILD_EXTMOD From: Masahiro Yamada > Sent: 17 May 2020 10:49 > $(firstword ...) in scripts/Makefile.modpost was added by commit > 3f3fd3c05585 ("[PATCH] kbuild: allow multi-word $M in Makefile.modpost") > to build multiple external module directories. > > This feature has been broken for a while. Remove the bitrotten code, and > stop parsing if M or KBUILD_EXTMOD contains multiple words. ISTR that one of the kernel documentation files says that it is possible to build multiple modules together in order to avoid 'faffing' with exported symbol lists. So the docs need updating to match. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
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