Merge tag 'kbuild-fixes-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/masahi...

Pull Kbuild fixes from Masahiro Yamada:

 - fix warning in out-of-tree 'make clean'

 - add READELF variable to the top Makefile

 - fix broken builds when LINUX_COMPILE_BY contains a backslash

 - fix build warning in kallsyms

 - fix NULL pointer access in expr_eq() in Kconfig

 - fix missing dependency on rsync in deb-pkg build

 - remove ---help--- from documentation

 - fix misleading documentation about directory descending

* tag 'kbuild-fixes-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: clarify the difference between obj-y and obj-m w.r.t. descending
  kconfig: remove ---help--- from documentation
  scripts: package: mkdebian: add missing rsync dependency
  kconfig: don't crash on NULL expressions in expr_eq()
  scripts/kallsyms: fix offset overflow of kallsyms_relative_base
  mkcompile_h: use printf for LINUX_COMPILE_BY
  mkcompile_h: git rid of UTS_TRUNCATE from LINUX_COMPILE_{BY,HOST}
  x86/boot: kbuild: allow readelf executable to be specified
  kbuild: fix 'No such file or directory' warning when cleaning

diff --combined Makefile
index f900c23,01072d0..e51b53c
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -2,7 -2,7 +2,7 @@@
  VERSION = 5
  PATCHLEVEL = 5
  SUBLEVEL = 0
 -EXTRAVERSION = -rc1
 +EXTRAVERSION = -rc2
  NAME = Kleptomaniac Octopus
  
  # *DOCUMENTATION*
@@@ -414,6 -414,7 +414,7 @@@ STRIP              = $(CROSS_COMPILE)stri
  OBJCOPY               = $(CROSS_COMPILE)objcopy
  OBJDUMP               = $(CROSS_COMPILE)objdump
  OBJSIZE               = $(CROSS_COMPILE)size
+ READELF               = $(CROSS_COMPILE)readelf
  PAHOLE                = pahole
  LEX           = flex
  YACC          = bison
@@@ -472,7 -473,7 +473,7 @@@ GCC_PLUGINS_CFLAGS :
  CLANG_FLAGS :=
  
  export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
- export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL
+ export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL
  export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
  export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE