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| author | Dmitry Goncharov <dgoncharov@users.sf.net> | 2022-12-05 16:48:19 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-11 16:31:55 +0100 |
| commit | 388e213eefbb1bb5502e79b6deeee3f6f890aad9 (patch) | |
| tree | ee54bbc51d9ee74f04599c43a60b9c90e94e96e1 /Makefile | |
| parent | ea526b226ff59043eb3baf151f024f49a60b3d1e (diff) | |
| download | linux-stable-388e213eefbb1bb5502e79b6deeee3f6f890aad9.tar.gz linux-stable-388e213eefbb1bb5502e79b6deeee3f6f890aad9.tar.bz2 linux-stable-388e213eefbb1bb5502e79b6deeee3f6f890aad9.zip | |
kbuild: Port silent mode detection to future gnu make.
commit 4bf73588165ba7d32131a043775557a54b6e1db5 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>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 13 |
1 files changed, 10 insertions, 3 deletions
@@ -88,10 +88,17 @@ endif # If the user is running make -s (silent mode), suppress echoing of # commands +# make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS. -ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) - quiet=silent_ - tools_silent=s +ifeq ($(filter 3.%,$(MAKE_VERSION)),) +silence:=$(findstring s,$(firstword -$(MAKEFLAGS))) +else +silence:=$(findstring s,$(filter-out --%,$(MAKEFLAGS))) +endif + +ifeq ($(silence),s) +quiet=silent_ +tools_silent=s endif export quiet Q KBUILD_VERBOSE |