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5355a120e4
commit 4bf7358816 upstream.
Port silent mode detection to the future (post make-4.4) versions of gnu make.
Makefile contains the following piece of make code to detect if option -s is
specified on the command line.
ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
This code is executed by make at parse time and assumes that MAKEFLAGS
does not contain command line variable definitions.
Currently if the user defines a=s on the command line, then at build only
time MAKEFLAGS contains " -- a=s".
However, starting with commit dc2d963989b96161472b2cd38cef5d1f4851ea34
MAKEFLAGS contains command line definitions at both parse time and
build time.
This '-s' detection code then confuses a command line variable
definition which contains letter 's' with option -s.
$ # old make
$ make net/wireless/ocb.o a=s
CALL scripts/checksyscalls.sh
DESCEND objtool
$ # this a new make which defines makeflags at parse time
$ ~/src/gmake/make/l64/make net/wireless/ocb.o a=s
$
We can see here that the letter 's' from 'a=s' was confused with -s.
This patch checks for presence of -s using a method recommended by the
make manual here
https://www.gnu.org/software/make/manual/make.html#Testing-Flags.
Link: https://lists.gnu.org/archive/html/bug-make/2022-11/msg00190.html
Reported-by: Jan Palus <jpalus+gnu@fastmail.com>
Signed-off-by: Dmitry Goncharov <dgoncharov@users.sf.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.