Merge tag 'kbuild-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - add a shell script to get Clang version

 - improve portability of build scripts

 - drop always-enabled CONFIG_THIN_ARCHIVE and remove unused code

 - rename built-in.o which is now thin archive to built-in.a

 - process clean/build targets one by one to get along with -j option

 - simplify ld-option

 - improve building with CONFIG_TRIM_UNUSED_KSYMS

 - define KBUILD_MODNAME even for objects shared among multiple modules

 - avoid linking multiple instances of same objects from composite
   objects

 - move <linux/compiler_types.h> to c_flags to include it only for C
   files

 - clean-up various Makefiles

* tag 'kbuild-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (29 commits)
  kbuild: get <linux/compiler_types.h> out of <linux/kconfig.h>
  kbuild: clean up link rule of composite modules
  kbuild: clean up archive rule of built-in.a
  kbuild: remove partial section mismatch detection for built-in.a
  net: liquidio: clean up Makefile for simpler composite object handling
  lib: zstd: clean up Makefile for simpler composite object handling
  kbuild: link $(real-obj-y) instead of $(obj-y) into built-in.a
  kbuild: rename real-objs-y/m to real-obj-y/m
  kbuild: move modname and modname-multi close to modname_flags
  kbuild: simplify modname calculation
  kbuild: fix modname for composite modules
  kbuild: define KBUILD_MODNAME even if multiple modules share objects
  kbuild: remove unnecessary $(subst $(obj)/, , ...) in modname-multi
  kbuild: Use ls(1) instead of stat(1) to obtain file size
  kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS
  kbuild: move include/config/ksym/* to include/ksym/*
  kbuild: move CONFIG_TRIM_UNUSED_KSYMS code unneeded for external module
  kbuild: restore autoksyms.h touch to the top Makefile
  kbuild: move 'scripts' target below
  kbuild: remove wrong 'touch' in adjust_autoksyms.sh
  ...

2 files changed, 6 insertions, 15 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 00eeff94b357..51c6bf0d93c6 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -324,11 +324,11 @@ config DEBUG_SECTION_MISMATCH
 	    the analysis would not catch the illegal reference.
 	    This option tells gcc to inline less (but it does result in
 	    a larger kernel).
-	  - Run the section mismatch analysis for each module/built-in.o file.
+	  - Run the section mismatch analysis for each module/built-in.a file.
 	    When we run the section mismatch analysis on vmlinux.o, we
 	    lose valuable information about where the mismatch was
 	    introduced.
-	    Running the analysis for each module/built-in.o file
+	    Running the analysis for each module/built-in.a file
 	    tells where the mismatch happens much closer to the
 	    source. The drawback is that the same mismatch is
 	    reported at least twice.
diff --git a/lib/zstd/Makefile b/lib/zstd/Makefile
index dd0a359c135b..7920cbbfeae9 100644
--- a/lib/zstd/Makefile
+++ b/lib/zstd/Makefile
@@ -3,16 +3,7 @@ obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd_decompress.o
 
 ccflags-y += -O3
 
-# Object files unique to zstd_compress and zstd_decompress
-zstd_compress-y := fse_compress.o huf_compress.o compress.o
-zstd_decompress-y := huf_decompress.o decompress.o
-
-# These object files are shared between the modules.
-# Always add them to zstd_compress.
-# Unless both zstd_compress and zstd_decompress are built in
-# then also add them to zstd_decompress.
-zstd_compress-y += entropy_common.o fse_decompress.o zstd_common.o
-
-ifneq ($(CONFIG_ZSTD_COMPRESS)$(CONFIG_ZSTD_DECOMPRESS),yy)
-	zstd_decompress-y += entropy_common.o fse_decompress.o zstd_common.o
-endif
+zstd_compress-y := fse_compress.o huf_compress.o compress.o \
+		   entropy_common.o fse_decompress.o zstd_common.o
+zstd_decompress-y := huf_decompress.o decompress.o \
+		     entropy_common.o fse_decompress.o zstd_common.o