Merge tag 'kbuild-fixes-v5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Use the 'python3' command to invoke python scripts because some
   distributions do not provide the 'python' command any more.

 - Clean-up and update documents

 - Use pkg-config to search libcrypto

 - Fix duplicated debug flags

 - Ignore some more stubs in scripts/kallsyms.c

* tag 'kbuild-fixes-v5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kallsyms: fix nonconverging kallsyms table with lld
  kbuild: fix duplicated flags in DEBUG_CFLAGS
  scripts/clang-tools: switch explicitly to Python 3
  kbuild: remove PYTHON variable
  Documentation/llvm: Add a section about supported architectures
  Revert "checkpatch: add check for keyword 'boolean' in Kconfig definitions"
  scripts: use pkg-config to locate libcrypto
  kconfig: mconf: fix HOSTCC call
  doc: gcc-plugins: update gcc-plugins.rst
  kbuild: simplify GCC_PLUGINS enablement in dummy-tools/gcc
  Documentation/Kbuild: Remove references to gcc-plugin.sh
  scripts: switch explicitly to Python 3

10 files changed, 21 insertions, 22 deletions

diff --git a/scripts/Makefile b/scripts/Makefile
index b5418ec587fb..9de3c03b94aa 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -3,6 +3,9 @@
 # scripts contains sources for various helper programs used throughout
 # the kernel for the build process.
 
+CRYPTO_LIBS = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
+CRYPTO_CFLAGS = $(shell pkg-config --cflags libcrypto 2> /dev/null)
+
 hostprogs-always-$(CONFIG_BUILD_BIN2C)			+= bin2c
 hostprogs-always-$(CONFIG_KALLSYMS)			+= kallsyms
 hostprogs-always-$(BUILD_C_RECORDMCOUNT)		+= recordmcount
@@ -14,8 +17,9 @@ hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE)	+= insert-sys-cert
 
 HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
 HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
-HOSTLDLIBS_sign-file = -lcrypto
-HOSTLDLIBS_extract-cert = -lcrypto
+HOSTLDLIBS_sign-file = $(CRYPTO_LIBS)
+HOSTCFLAGS_extract-cert.o = $(CRYPTO_CFLAGS)
+HOSTLDLIBS_extract-cert = $(CRYPTO_LIBS)
 
 ifdef CONFIG_UNWINDER_ORC
 ifeq ($(ARCH),x86_64)
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index 652e9542043f..dcd8d8750b8b 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright 2004 Matt Mackall <mpm@selenic.com>
 #
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 92e888ed939f..1afe3af1cc09 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3390,13 +3390,6 @@ sub process {
 			}
 		}
 
-# discourage the use of boolean for type definition attributes of Kconfig options
-		if ($realfile =~ /Kconfig/ &&
-		    $line =~ /^\+\s*\bboolean\b/) {
-			WARN("CONFIG_TYPE_BOOLEAN",
-			     "Use of boolean is deprecated, please use bool instead.\n" . $herecurr);
-		}
-
 		if (($realfile =~ /Makefile.*/ || $realfile =~ /Kbuild.*/) &&
 		    ($line =~ /\+(EXTRA_[A-Z]+FLAGS).*/)) {
 			my $flag = $1;
diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py
index 19963708bcf8..8ddb5d099029 100755
--- a/scripts/clang-tools/gen_compile_commands.py
+++ b/scripts/clang-tools/gen_compile_commands.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-2.0
 #
 # Copyright (C) Google LLC, 2018
diff --git a/scripts/clang-tools/run-clang-tools.py b/scripts/clang-tools/run-clang-tools.py
index fa7655c7cec0..f754415af398 100755
--- a/scripts/clang-tools/run-clang-tools.py
+++ b/scripts/clang-tools/run-clang-tools.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-2.0
 #
 # Copyright (C) Google LLC, 2020
diff --git a/scripts/diffconfig b/scripts/diffconfig
index 627eba5849b5..d5da5fa05d1d 100755
--- a/scripts/diffconfig
+++ b/scripts/diffconfig
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-2.0
 #
 # diffconfig - a tool to compare .config files.
diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc
index 33487e99d83e..5c113cad5601 100755
--- a/scripts/dummy-tools/gcc
+++ b/scripts/dummy-tools/gcc
@@ -75,16 +75,12 @@ if arg_contain -S "$@"; then
 	fi
 fi
 
-# For scripts/gcc-plugin.sh
+# To set GCC_PLUGINS
 if arg_contain -print-file-name=plugin "$@"; then
 	plugin_dir=$(mktemp -d)
 
-	sed -n 's/.*#include "\(.*\)"/\1/p' $(dirname $0)/../gcc-plugins/gcc-common.h |
-	while read header
-	do
-		mkdir -p $plugin_dir/include/$(dirname $header)
-		touch $plugin_dir/include/$header
-	done
+	mkdir -p $plugin_dir/include
+	touch $plugin_dir/include/plugin-version.h
 
 	echo $plugin_dir
 	exit 0
diff --git a/scripts/jobserver-exec b/scripts/jobserver-exec
index 0fdb31a790a8..48d141e3ec56 100755
--- a/scripts/jobserver-exec
+++ b/scripts/jobserver-exec
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-2.0+
 #
 # This determines how many parallel tasks "make" is expecting, as it is
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 7ecd2ccba531..54ad86d13784 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -112,6 +112,12 @@ static bool is_ignored_symbol(const char *name, char type)
 		"__crc_",		/* modversions */
 		"__efistub_",		/* arm64 EFI stub namespace */
 		"__kvm_nvhe_",		/* arm64 non-VHE KVM namespace */
+		"__AArch64ADRPThunk_",	/* arm64 lld */
+		"__ARMV5PILongThunk_",	/* arm lld */
+		"__ARMV7PILongThunk_",
+		"__ThumbV7PILongThunk_",
+		"__LA25Thunk_",		/* mips lld */
+		"__microLA25Thunk_",
 		NULL
 	};
 
diff --git a/scripts/kconfig/mconf-cfg.sh b/scripts/kconfig/mconf-cfg.sh
index fcd4acd4e9cb..b520e407a8eb 100755
--- a/scripts/kconfig/mconf-cfg.sh
+++ b/scripts/kconfig/mconf-cfg.sh
@@ -35,7 +35,7 @@ fi
 
 # As a final fallback before giving up, check if $HOSTCC knows of a default
 # ncurses installation (e.g. from a vendor-specific sysroot).
-if echo '#include <ncurses.h>' | "${HOSTCC}" -E - >/dev/null 2>&1; then
+if echo '#include <ncurses.h>' | ${HOSTCC} -E - >/dev/null 2>&1; then
 	echo cflags=\"-D_GNU_SOURCE\"
 	echo libs=\"-lncurses\"
 	exit 0