Hi Linus, Please pull Kbuild updates for v4.21 You will see a conflict in the top Makefile. The correct fix is available in linux-next. The following changes since commit ccda4af0f4b92f7b4c308d3acc262f4a7e3affad: Linux 4.20-rc2 (2018-11-11 17:12:31 -0600) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git tags/kbuild-v4.21 for you to fetch changes up to dec28d8ea2f731b7ec68a2c9421e99a165d47b57: kbuild: remove unused cmd_gentimeconst (2018-12-25 00:10:30 +0900) ---------------------------------------------------------------- Kbuild updates for v4.21 Kbuild core: - remove unneeded $(call cc-option,...) switches - consolidate Clang compiler flags into CLANG_FLAGS - announce the deprecation of SUBDIRS - fix single target build for external module - simplify the dependencies of 'prepare' stage targets - allow fixdep to directly write to .*.cmd files - simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS - change if_changed_rule to accept multi-line recipe - move .SECONDARY special target to scripts/Kbuild.include - remove redundant 'set -e' - improve parallel execution for CONFIG_HEADERS_CHECK - misc cleanups Treewide fixes and cleanups - set Clang flags correctly for PowerPC boot images - fix UML build error with CONFIG_GCC_PLUGINS - remove unneeded patterns from .gitignore files - refactor firmware/Makefile - remove unneeded rules for *offsets.s - avoid unneeded regeneration of intermediate .s files - clean up ./Kbuild Modpost: - remove unused -M, -K options - fix false positive warnings about section mismatch - use simple devtable lookup instead of linker magic - misc cleanups Coccinelle: - relax boolinit.cocci checks for overall consistency - fix warning messages of boolinit.cocci Other tools: - improve -dirty check of scripts/setlocalversion - add a tool to generate compile_commands.json from .*.cmd files ---------------------------------------------------------------- Brian Norris (1): scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks Eugen Cazacu (1): user/Makefile: Fix typo and capitalization in comment section Joel Stanley (2): Makefile: Export clang toolchain variables powerpc/boot: Set target when cross-compiling for clang Julia Lawall (2): scripts: coccinelle: only suggest true/false in files that already use them scripts: coccinelle: Correct warning message Masahiro Yamada (41): kbuild: add -no-integrated-as Clang option unconditionally kbuild: consolidate Clang compiler flags kbuild: announce removal of SUBDIRS if used kbuild: fix single target build for external module modpost: file2alias: go back to simple devtable lookup modpost: file2alias: check prototype of handler modpost: refactor seen flag clearing in add_depends() modpost: merge module iterations modpost: move unresolved symbol checks to check_exports() kbuild: fix UML build error with CONFIG_GCC_PLUGINS kbuild: move modpost out of 'scripts' target kbuild: make 'archprepare' depend on 'scripts' kbuild: descend into scripts/gcc-plugins/ via scripts/Makefile kbuild: let fixdep directly write to .*.cmd files kbuild: remove redundant 'set -e' from filechk_offsets kbuild: remove redundant 'set -e' from sub_cmd_record_mcount kbuild: refactor modversions build rules kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS kbuild: change if_changed_rule for multi-line recipe kbuild: remove trailing semicolon from cmd_* passed to if_changed_rule kbuild: refactor if_changed kbuild: remove redundant 'set -e' from cmd_* defines kbuild: move .SECONDARY special target to Kbuild.include kbuild: remove a special handling for *.agh in Makefile.headersinst kbuild: exploit parallel building for CONFIG_HEADERS_CHECK kbuild: refactor Makefile.asm-generic kbuild: remove redundant quiet_modtag for $(obj-m) kbuild: refactor quiet_modtag kbuild: refactor part-of-module kbuild: handle part-of-module correctly for *.ll and *.symtypes kbuild: add -fno-PIE flag unconditionally kbuild: add -Werror=strict-prototypes flag unconditionally kbuild: add -Werror=implicit-int flag unconditionally um: remove unused filechk_gen_header in Makefile scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore firmware: remove unnecessary patterns from .gitignore firmware: refactor firmware/Makefile treewide: remove explicit rules for *offsets.s treewide: add intermediate .s files to targets kbuild: remove $(obj)/ prefixes in ./Kbuild kbuild: remove unused cmd_gentimeconst Paul Walmsley (2): modpost: drop unused command line switches modpost: skip ELF local symbols during section mismatch check Sami Tolvanen (1): modpost: validate symbol names also in find_elf_symbol Tom Roeder (1): scripts: add a tool to produce a compile_commands.json file Documentation/kbuild/kbuild.txt | 7 +-- Kbuild | 21 ++------ Makefile | 111 +++++++++++++++++++---------------------- arch/arm/crypto/Makefile | 2 +- arch/arm/mach-at91/Makefile | 5 +- arch/arm/mach-omap2/Makefile | 5 +- arch/arm64/crypto/Makefile | 2 +- arch/ia64/kernel/Makefile | 7 +-- arch/powerpc/boot/Makefile | 5 ++ arch/um/Makefile | 26 +--------- arch/x86/um/Makefile | 5 +- drivers/memory/Makefile.asm-offsets | 5 +- drivers/mtd/maps/scx200_docflash.c | 7 --- drivers/watchdog/scx200_wdt.c | 7 --- firmware/.gitignore | 5 -- firmware/Makefile | 84 ++++++++++++------------------- include/asm-generic/export.h | 13 +++-- include/linux/export.h | 18 +++---- samples/bpf/Makefile | 4 +- samples/connector/Makefile | 2 +- scripts/.gitignore | 2 - scripts/Kbuild.include | 52 ++++--------------- scripts/Makefile | 4 +- scripts/Makefile.asm-generic | 37 +++++++------- scripts/Makefile.build | 128 ++++++++++++++++++----------------------------- scripts/Makefile.gcc-plugins | 8 --- scripts/Makefile.headersinst | 1 - scripts/Makefile.lib | 2 +- scripts/basic/fixdep.c | 31 ++---------- scripts/coccinelle/misc/boolinit.cocci | 43 ++++++++++------ scripts/gen_compile_commands.py | 151 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ scripts/gen_ksymdeps.sh | 25 ++++++++++ scripts/mod/Makefile | 2 - scripts/mod/file2alias.c | 149 +++++++++++++++++++------------------------------------ scripts/mod/modpost.c | 114 +++++++++++++++++++++++------------------- scripts/package/Makefile | 1 - scripts/setlocalversion | 12 ++++- usr/Makefile | 4 +- 38 files changed, 543 insertions(+), 564 deletions(-) create mode 100755 scripts/gen_compile_commands.py create mode 100755 scripts/gen_ksymdeps.sh -- Best Regards Masahiro Yamada