linux-stable.git/Makefile, branch v5.3.1

Linux 5.3.1

2019-09-21T05:19:47+00:00

Linux 5.3

2019-09-15T21:19:32+00:00

Linux 5.3-rc8

2019-09-08T20:33:15+00:00

Linux 5.3-rc7

2019-09-02T16:57:40+00:00

Linux 5.3-rc6

2019-08-25T19:01:23+00:00

Linux 5.3-rc5

2019-08-18T21:31:08+00:00

Linux 5.3-rc4

2019-08-11T20:26:41+00:00

Makefile: Convert -Wimplicit-fallthrough=3 to just -Wimplicit-fallthrough for clang

2019-08-10T19:45:37+00:00

A compilation -Wimplicit-fallthrough warning was enabled by commit
a035d552a93b ("Makefile: Globally enable fall-through warning")

Even though clang 10.0.0 does not currently support this warning without
a patch, clang currently does not support a value for this option.

  Link: https://bugs.llvm.org/show_bug.cgi?id=39382

The gcc default for this warning is 3 so removing the =3 has no effect
for gcc and enables the warning for patched versions of clang.

Also remove the =3 from an existing use in a parisc Makefile:
arch/parisc/math-emu/Makefile

Signed-off-by: Joe Perches 
Reviewed-and-tested-by: Nathan Chancellor 
Cc: Gustavo A. R. Silva 
Signed-off-by: Linus Torvalds

Merge tag 'kbuild-fixes-v5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2019-08-10T03:31:04+00:00

Pull Kbuild fixes from Masahiro Yamada:

 - revive single target %.ko

 - do not create built-in.a where it is unneeded

 - do not create modules.order where it is unneeded

 - show a warning if subdir-y/m is used to visit a module Makefile

* tag 'kbuild-fixes-v5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: show hint if subdir-y/m is used to visit module Makefile
  kbuild: generate modules.order only in directories visited by obj-y/m
  kbuild: fix false-positive need-builtin calculation
  kbuild: revive single target %.ko

kbuild: show hint if subdir-y/m is used to visit module Makefile

2019-08-09T16:45:31+00:00

Since commit ff9b45c55b26 ("kbuild: modpost: read modules.order instead
of $(MODVERDIR)/*.mod"), a module is no longer built in the following
pattern:

  [Makefile]
  subdir-y := some-module

  [some-module/Makefile]
  obj-m := some-module.o

You cannot write Makefile this way in upstream because modules.order is
not correctly generated. subdir-y is used to descend to a sub-directory
that builds tools, device trees, etc.

For external modules, the modules order does not matter. So, the
Makefile above was known to work.

I believe the Makefile should be re-written as follows:

  [Makefile]
  obj-m := some-module/

  [some-module/Makefile]
  obj-m := some-module.o

However, people will have no idea if their Makefile suddenly stops
working. In fact, I received questions from multiple people.

Show a warning for a while if obj-m is specified in a Makefile visited
by subdir-y or subdir-m.

I touched the %/ rule to avoid false-positive warnings for the single
target.

Cc: Jan Kiszka 
Cc: Tom Stonecypher 
Signed-off-by: Masahiro Yamada 
Tested-by: Jan Kiszka