linux-next: manual merge of the rust tree with the kbuild tree

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Hi all,

Today's linux-next merge of the rust tree got a conflict in:

  Makefile

between commits:

  a14efe0d73eb ("kbuild: include Makefile.compiler only when compiler is needed")
  9fc2872b700a ("Makefile: Remove '--gcc-toolchain' flag")
  71eb5c859a59 ("Makefile: Only specify '--prefix=' when building with clang + GNU as")
  884a7fa1b090 ("kbuild: replace sed with $(subst ) or $(patsubst )")

from the kbuild tree and commit:

  c77c8025525c ("Rust support")

from the rust tree.

I fixed it up (see below - I think I got this right ...) and can carry
the fix as necessary. This is now fixed as far as linux-next is
concerned, but any non trivial conflicts should be mentioned to your
upstream maintainer when your tree is submitted for merging.  You may
also want to consider cooperating with the maintainer of the
conflicting tree to minimise any particularly complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc Makefile
index cc5b7e39fde4,6e6562591a91..000000000000
--- a/Makefile
+++ b/Makefile
@@@ -263,11 -270,7 +270,11 @@@ no-dot-config-targets := $(clean-target
  			 cscope gtags TAGS tags help% %docs check% coccicheck \
  			 $(version_h) headers headers_% archheaders archscripts \
  			 %asm-generic kernelversion %src-pkg dt_binding_check \
- 			 outputmakefile
+ 			 outputmakefile rustfmt rustfmtcheck
 +# Installation targets should not require compiler. Unfortunately, vdso_install
 +# is an exception where build artifacts may be updated. This must be fixed.
 +no-compiler-targets := $(no-dot-config-targets) install dtbs_install \
 +			headers_install modules_install kernelrelease image_name
  no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \
  			  image_name
  single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/
@@@ -570,22 -588,31 +599,27 @@@ ifdef building_out_of_srctre
  	{ echo "# this is build directory, ignore it"; echo "*"; } > .gitignore
  endif
  
+ TENTATIVE_CLANG_FLAGS := -Werror=unknown-warning-option
+ 
+ ifneq ($(CROSS_COMPILE),)
+ TENTATIVE_CLANG_FLAGS	+= --target=$(notdir $(CROSS_COMPILE:%-=%))
 -GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
 -TENTATIVE_CLANG_FLAGS	+= --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
 -GCC_TOOLCHAIN	:= $(realpath $(GCC_TOOLCHAIN_DIR)/..)
 -endif
 -ifneq ($(GCC_TOOLCHAIN),)
 -TENTATIVE_CLANG_FLAGS	+= --gcc-toolchain=$(GCC_TOOLCHAIN)
+ endif
+ ifneq ($(LLVM_IAS),1)
+ TENTATIVE_CLANG_FLAGS	+= -no-integrated-as
++GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
++TENTATIVE_CLANG_FLAGS	+= --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
+ endif
+ 
+ export TENTATIVE_CLANG_FLAGS
+ 
  # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included.
  # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile.
  # CC_VERSION_TEXT is referenced from Kconfig (so it needs export),
  # and from include/config/auto.conf.cmd to detect the compiler upgrade.
 -CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1 | sed 's/\#//g')
 +CC_VERSION_TEXT = $(subst $(pound),,$(shell $(CC) --version 2>/dev/null | head -n 1))
  
  ifneq ($(findstring clang,$(CC_VERSION_TEXT)),)
- ifneq ($(CROSS_COMPILE),)
- CLANG_FLAGS	+= --target=$(notdir $(CROSS_COMPILE:%-=%))
- endif
- ifneq ($(LLVM_IAS),1)
- CLANG_FLAGS	+= -no-integrated-as
- GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
- CLANG_FLAGS	+= --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
- endif
- CLANG_FLAGS	+= -Werror=unknown-warning-option
+ CLANG_FLAGS	+= $(TENTATIVE_CLANG_FLAGS)
  KBUILD_CFLAGS	+= $(CLANG_FLAGS)
  KBUILD_AFLAGS	+= $(CLANG_FLAGS)
  export CLANG_FLAGS

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