[GIT PULL] Kbuild updates for v5.4-rc1

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Hi Linus,

This is a Kbuild pull request for v5.4-rc1.
I am sending this a bit earlier.
Please pull it in when you open the merge window.

Thanks.


The following changes since commit d45331b00ddb179e291766617259261c112db872:

  Linux 5.3-rc4 (2019-08-11 13:26:41 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
tags/kbuild-v5.4

for you to fetch changes up to 77564a4829ef6d309331d443ea6ceb065f3dc371:

  genksyms: convert to SPDX License Identifier for lex.l and parse.y
(2019-09-14 11:40:13 +0900)

----------------------------------------------------------------
Kbuild updates for v5.4

 - add modpost warn exported symbols marked as 'static' because 'static'
   and EXPORT_SYMBOL is an odd combination

 - break the build early if gold linker is used

 - optimize the Bison rule to produce .c and .h files by a single
   pattern rule

 - handle PREEMPT_RT in the module vermagic and UTS_VERSION

 - warn CONFIG options leaked to the user-space except existing ones

 - make single targets work properly

 - rebuild modules when module linker scripts are updated

 - split the module final link stage into scripts/Makefile.modfinal

 - fix the missed error code in merge_config.sh

 - improve the error message displayed on the attempt of the O= build
   in unclean source tree

 - remove 'clean-dirs' syntax

 - disable -Wimplicit-fallthrough warning for Clang

 - add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC

 - remove ARCH_{CPP,A,C}FLAGS variables

 - add $(BASH) to run bash scripts

 - change *CFLAGS_<basetarget>.o to take the relative path to $(obj)
   instead of the basename

 - stop suppressing Clang's -Wunused-function warnings when W=1

 - fix linux/export.h to avoid genksyms calculating CRC of trimmed
   exported symbols

 - misc cleanups

----------------------------------------------------------------
Denis Efremov (2):
      modpost: check for static EXPORT_SYMBOL* functions
      modpost: add NOFAIL to strndup

Guillaume Tucker (1):
      merge_config.sh: ignore unwanted grep errors

Heikki Krogerus (1):
      modpost: add guid_t type definition

Kees Cook (1):
      kbuild: Parameterize kallsyms generation and correct reporting

Mark Brown (1):
      merge_config.sh: Check error codes from make

Masahiro Yamada (54):
      kbuild: use $(basename ...) for cmd_asn1_compiler
      kbuild: make bison create C file and header in a single pattern rule
      kbuild: move flex and bison rules to Makefile.host
      kbuild: add [M] marker for build log of *.mod.o
      kbuild: treat an object as multi-used when $(foo-) is set
      kbuild: move the Module.symvers check for external module build
      kbuild: refactor part-of-module more
      kbuild: fix modkern_aflags implementation
      kbuild: remove 'make /' support
      kbuild: remove meaningless 'targets' in ./Kbuild
      kbuild: do not descend to ./Kbuild when cleaning
      kbuild: unset variables in top Makefile instead of setting 0
      kbuild: unify vmlinux-dirs and module-dirs rules
      kbuild: unify clean-dirs rule for in-kernel and external module
      kbuild: re-implement detection of CONFIG options leaked to user-space
      kbuild: make single targets work more correctly
      treewide: remove dummy Makefiles for single targets
      kbuild: move KBUILD_LDS, KBUILD_VMLINUX_{OBJS,LIBS} to makefiles.rst
      kbuild: rebuild modules when module linker scripts are updated
      kbuild: split final module linking out into Makefile.modfinal
      .gitignore: ignore modules.order explicitly
      kbuild: add CONFIG_ASM_MODVERSIONS
      kbuild: move modkern_{c,a}flags to Makefile.lib from Makefile.build
      kbuild: pkg: clean up package files/dirs from the top Makefile
      kbuild: pkg: add package targets to PHONY instead of FORCE
      kbuild: pkg: rename scripts/package/Makefile to scripts/Makefile.package
      kbuild: remove unneeded '+' marker from kselftest-merge
      docs: kbuild: fix invalid ReST syntax
      docs: kbuild: remove cc-ldoption from document again
      init/Kconfig: rework help of CONFIG_CC_OPTIMIZE_FOR_SIZE
      kbuild: remove unneeded comments and code from scripts/basic/Makefile
      kbuild: remove unneeded dependency for $(DOC_TARGETS)
      kbuild: get rid of $(realpath ...) from scripts/mkmakefile
      kbuild: remove 'Using ... as source for kernel' message
      kbuild: Inform user to pass ARCH= for make mrproper only when necessary
      kbuild: clarify where to run make mrproper when out-of-tree fails
      kbuild: move the clean srctree check to the outputmakefile target
      kbuild: remove prepare3 target
      kbuild: check clean srctree even earlier
      kbuild: remove clean-dirs syntax
      kbuild: remove unneeded '+' marker from cmd_clean
      kbuild: clean up subdir-ymn calculation in Makefile.clean
      kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC
      kbuild: remove ARCH_{CPP,A,C}FLAGS
      kbuild: add $(BASH) to run scripts with bash-extension
      kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)
      kbuild: refactor scripts/Makefile.extrawarn
      kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to KBUILD_EXTRA_WARN
      kbuild: allow Clang to find unused static inline functions for W=1 build
      export.h: remove defined(__KERNEL__), which is no longer needed
      export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols
      modpost: use MODULE_INFO() for __module_depends
      modpost: use __section in the output to *.mod.c
      genksyms: convert to SPDX License Identifier for lex.l and parse.y

Nathan Chancellor (1):
      kbuild: Do not enable -Wimplicit-fallthrough for clang for now

Thomas Gleixner (2):
      kbuild: Fail if gold linker is detected
      Kbuild: Handle PREEMPT_RT for version string and magic

 .gitignore                                                  |   2 +-
 Documentation/kbuild/kbuild.rst                             |  28 +--
 Documentation/kbuild/makefiles.rst                          |  67 +++---
 Kbuild                                                      |   7 -
 Makefile                                                    | 296
+++++++++++++-------------
 arch/Kconfig                                                |   7 +
 arch/alpha/Kconfig                                          |   1 +
 arch/arc/Makefile                                           |   8 -
 arch/arc/configs/axs101_defconfig                           |   1 +
 arch/arc/configs/axs103_defconfig                           |   1 +
 arch/arc/configs/axs103_smp_defconfig                       |   1 +
 arch/arc/configs/haps_hs_defconfig                          |   1 +
 arch/arc/configs/haps_hs_smp_defconfig                      |   1 +
 arch/arc/configs/hsdk_defconfig                             |   1 +
 arch/arc/configs/nps_defconfig                              |   1 +
 arch/arc/configs/nsim_700_defconfig                         |   1 +
 arch/arc/configs/nsim_hs_defconfig                          |   1 +
 arch/arc/configs/nsim_hs_smp_defconfig                      |   1 +
 arch/arc/configs/nsimosci_defconfig                         |   1 +
 arch/arc/configs/nsimosci_hs_defconfig                      |   1 +
 arch/arc/configs/nsimosci_hs_smp_defconfig                  |   1 +
 arch/arc/configs/tb10x_defconfig                            |   1 +
 arch/arc/configs/vdk_hs38_defconfig                         |   1 +
 arch/arc/configs/vdk_hs38_smp_defconfig                     |   1 +
 arch/arm/Makefile                                           |   2 +-
 arch/arm/kvm/Makefile                                       |   5 +-
 arch/arm64/Kconfig                                          |   1 +
 arch/arm64/Makefile                                         |   2 +-
 arch/ia64/Kconfig                                           |   1 +
 arch/ia64/Makefile                                          |   2 +-
 arch/m68k/Kconfig                                           |   1 +
 arch/m68k/Makefile                                          |   2 +-
 arch/mips/Kconfig                                           |   1 +
 arch/mips/boot/Makefile                                     |   2 +-
 arch/parisc/Makefile                                        |   2 +-
 arch/powerpc/Kconfig                                        |   1 +
 arch/powerpc/Makefile                                       |   2 +-
 arch/powerpc/Makefile.postlink                              |   2 +-
 arch/powerpc/kernel/prom_init_check.sh                      |   2 +-
 arch/riscv/Kconfig                                          |   1 +
 arch/riscv/Makefile                                         |   2 +-
 arch/s390/Kconfig                                           |   1 +
 arch/sparc/Kconfig                                          |   1 +
 arch/um/Kconfig                                             |   1 +
 arch/x86/Kconfig                                            |   1 +
 arch/x86/entry/vdso/Makefile                                |   3 +-
 drivers/gpu/drm/amd/display/dc/calcs/Makefile               |   6 +-
 drivers/gpu/drm/amd/display/dc/dcn20/Makefile               |   2 +-
 drivers/gpu/drm/amd/display/dc/dml/Makefile                 |  17 +-
 drivers/gpu/drm/amd/display/dc/dsc/Makefile                 |   7 +-
 drivers/gpu/drm/i915/Makefile                               |   2 +-
 drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile      |   2 -
 drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile      |   2 -
 drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile       |   2 -
 drivers/net/ethernet/mellanox/mlx5/core/en/Makefile         |   2 -
 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile     |   1 -
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile   |   2 -
 drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile       |   2 -
 drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile      |   2 -
 drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile        |   2 -
 drivers/net/ethernet/netronome/nfp/bpf/Makefile             |   2 -
 drivers/net/ethernet/netronome/nfp/flower/Makefile          |   2 -
 drivers/net/ethernet/netronome/nfp/nfpcore/Makefile         |   2 -
 drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile |   2 -
 drivers/net/ethernet/netronome/nfp/nic/Makefile             |   2 -
 include/linux/compiler_types.h                              |  20 +-
 include/linux/export.h                                      |  42 ++--
 include/linux/vermagic.h                                    |   2 +
 init/Kconfig                                                |  26 ++-
 init/Makefile                                               |   5 +-
 kernel/Makefile                                             |   2 +-
 scripts/Kconfig.include                                     |   3 +
 scripts/Makefile                                            |   2 +-
 scripts/Makefile.build                                      |  73 ++++---
 scripts/Makefile.clean                                      |  31 +--
 scripts/Makefile.extrawarn                                  | 121 ++++++-----
 scripts/Makefile.host                                       |  39 +++-
 scripts/Makefile.lib                                        |  63 +++---
 scripts/Makefile.modfinal                                   |  60 ++++++
 scripts/Makefile.modpost                                    |  80 ++-----
 scripts/{package/Makefile => Makefile.package}              |  43 ++--
 scripts/basic/Makefile                                      |  14 +-
 scripts/genksyms/Makefile                                   |  11 +-
 scripts/genksyms/keywords.c                                 |   6 +-
 scripts/genksyms/lex.l                                      |  32 +--
 scripts/genksyms/parse.y                                    |  32 +--
 scripts/headers_install.sh                                  |  72 +++++++
 scripts/kconfig/Makefile                                    |  10 +-
 scripts/kconfig/merge_config.sh                             |  12 +-
 scripts/link-vmlinux.sh                                     |  38 ++--
 scripts/mkcompile_h                                         |   4 +-
 scripts/mkmakefile                                          |   4 +-
 scripts/mod/file2alias.c                                    |   5 +
 scripts/mod/modpost.c                                       |  48 ++++-
 usr/include/Makefile                                        |   4 +-
 95 files changed, 755 insertions(+), 680 deletions(-)
 delete mode 100644 drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile
 delete mode 100644 drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile
 delete mode 100644 drivers/net/ethernet/netronome/nfp/bpf/Makefile
 delete mode 100644 drivers/net/ethernet/netronome/nfp/flower/Makefile
 delete mode 100644 drivers/net/ethernet/netronome/nfp/nfpcore/Makefile
 delete mode 100644 drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile
 delete mode 100644 drivers/net/ethernet/netronome/nfp/nic/Makefile
 create mode 100644 scripts/Makefile.modfinal
 rename scripts/{package/Makefile => Makefile.package} (92%)


-- 
Best Regards
Masahiro Yamada



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