--- /dev/null
+From d5ea4fece4508bf8e72b659cd22fa4840d8d61e5 Mon Sep 17 00:00:00 2001
+From: Chun-Tse Shao <ctshao@google.com>
+Date: Fri, 1 Apr 2022 23:18:02 +0000
+Subject: kbuild: Allow kernel installation packaging to override pkg-config
+
+From: Chun-Tse Shao <ctshao@google.com>
+
+commit d5ea4fece4508bf8e72b659cd22fa4840d8d61e5 upstream.
+
+Add HOSTPKG_CONFIG to allow tooling that builds the kernel to override
+what pkg-config and parameters are used.
+
+Signed-off-by: Chun-Tse Shao <ctshao@google.com>
+Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
+Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
+[swboyd@chromium.org: Drop certs/Makefile hunk that doesn't
+apply because pkg-config isn't used there, add dtc/Makefile hunk to
+fix dtb builds]
+Signed-off-by: Stephen Boyd <swboyd@chromium.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ Makefile | 3 ++-
+ scripts/Makefile | 4 ++--
+ scripts/dtc/Makefile | 6 +++---
+ scripts/kconfig/gconf-cfg.sh | 12 ++++++------
+ scripts/kconfig/mconf-cfg.sh | 16 ++++++++--------
+ scripts/kconfig/nconf-cfg.sh | 16 ++++++++--------
+ scripts/kconfig/qconf-cfg.sh | 14 +++++++-------
+ tools/objtool/Makefile | 4 ++--
+ 8 files changed, 38 insertions(+), 37 deletions(-)
+
+--- a/Makefile
++++ b/Makefile
+@@ -430,6 +430,7 @@ else
+ HOSTCC = gcc
+ HOSTCXX = g++
+ endif
++HOSTPKG_CONFIG = pkg-config
+
+ export KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
+ -O2 -fomit-frame-pointer -std=gnu89
+@@ -525,7 +526,7 @@ KBUILD_LDFLAGS_MODULE :=
+ KBUILD_LDFLAGS :=
+ CLANG_FLAGS :=
+
+-export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
++export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC HOSTPKG_CONFIG
+ export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL
+ export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
+ export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD
+--- a/scripts/Makefile
++++ b/scripts/Makefile
+@@ -3,8 +3,8 @@
+ # 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)
++CRYPTO_LIBS = $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
++CRYPTO_CFLAGS = $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null)
+
+ hostprogs-always-$(CONFIG_BUILD_BIN2C) += bin2c
+ hostprogs-always-$(CONFIG_KALLSYMS) += kallsyms
+--- a/scripts/dtc/Makefile
++++ b/scripts/dtc/Makefile
+@@ -18,7 +18,7 @@ fdtoverlay-objs := $(libfdt) fdtoverlay.
+ # Source files need to get at the userspace version of libfdt_env.h to compile
+ HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
+
+-ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
++ifeq ($(shell $(HOSTPKG_CONFIG) --exists yaml-0.1 2>/dev/null && echo yes),)
+ ifneq ($(CHECK_DT_BINDING)$(CHECK_DTBS),)
+ $(error dtc needs libyaml for DT schema validation support. \
+ Install the necessary libyaml development package.)
+@@ -27,9 +27,9 @@ HOST_EXTRACFLAGS += -DNO_YAML
+ else
+ dtc-objs += yamltree.o
+ # To include <yaml.h> installed in a non-default path
+-HOSTCFLAGS_yamltree.o := $(shell pkg-config --cflags yaml-0.1)
++HOSTCFLAGS_yamltree.o := $(shell $(HOSTPKG_CONFIG) --cflags yaml-0.1)
+ # To link libyaml installed in a non-default path
+-HOSTLDLIBS_dtc := $(shell pkg-config --libs yaml-0.1)
++HOSTLDLIBS_dtc := $(shell $(HOSTPKG_CONFIG) --libs yaml-0.1)
+ endif
+
+ # Generated files need one more search path to include headers in source tree
+--- a/scripts/kconfig/gconf-cfg.sh
++++ b/scripts/kconfig/gconf-cfg.sh
+@@ -3,14 +3,14 @@
+
+ PKG="gtk+-2.0 gmodule-2.0 libglade-2.0"
+
+-if [ -z "$(command -v pkg-config)" ]; then
++if [ -z "$(command -v ${HOSTPKG_CONFIG})" ]; then
+ echo >&2 "*"
+- echo >&2 "* 'make gconfig' requires 'pkg-config'. Please install it."
++ echo >&2 "* 'make gconfig' requires '${HOSTPKG_CONFIG}'. Please install it."
+ echo >&2 "*"
+ exit 1
+ fi
+
+-if ! pkg-config --exists $PKG; then
++if ! ${HOSTPKG_CONFIG} --exists $PKG; then
+ echo >&2 "*"
+ echo >&2 "* Unable to find the GTK+ installation. Please make sure that"
+ echo >&2 "* the GTK+ 2.0 development package is correctly installed."
+@@ -19,12 +19,12 @@ if ! pkg-config --exists $PKG; then
+ exit 1
+ fi
+
+-if ! pkg-config --atleast-version=2.0.0 gtk+-2.0; then
++if ! ${HOSTPKG_CONFIG} --atleast-version=2.0.0 gtk+-2.0; then
+ echo >&2 "*"
+ echo >&2 "* GTK+ is present but version >= 2.0.0 is required."
+ echo >&2 "*"
+ exit 1
+ fi
+
+-echo cflags=\"$(pkg-config --cflags $PKG)\"
+-echo libs=\"$(pkg-config --libs $PKG)\"
++echo cflags=\"$(${HOSTPKG_CONFIG} --cflags $PKG)\"
++echo libs=\"$(${HOSTPKG_CONFIG} --libs $PKG)\"
+--- a/scripts/kconfig/mconf-cfg.sh
++++ b/scripts/kconfig/mconf-cfg.sh
+@@ -4,16 +4,16 @@
+ PKG="ncursesw"
+ PKG2="ncurses"
+
+-if [ -n "$(command -v pkg-config)" ]; then
+- if pkg-config --exists $PKG; then
+- echo cflags=\"$(pkg-config --cflags $PKG)\"
+- echo libs=\"$(pkg-config --libs $PKG)\"
++if [ -n "$(command -v ${HOSTPKG_CONFIG})" ]; then
++ if ${HOSTPKG_CONFIG} --exists $PKG; then
++ echo cflags=\"$(${HOSTPKG_CONFIG} --cflags $PKG)\"
++ echo libs=\"$(${HOSTPKG_CONFIG} --libs $PKG)\"
+ exit 0
+ fi
+
+- if pkg-config --exists $PKG2; then
+- echo cflags=\"$(pkg-config --cflags $PKG2)\"
+- echo libs=\"$(pkg-config --libs $PKG2)\"
++ if ${HOSTPKG_CONFIG} --exists $PKG2; then
++ echo cflags=\"$(${HOSTPKG_CONFIG} --cflags $PKG2)\"
++ echo libs=\"$(${HOSTPKG_CONFIG} --libs $PKG2)\"
+ exit 0
+ fi
+ fi
+@@ -46,7 +46,7 @@ echo >&2 "* Unable to find the ncurses p
+ echo >&2 "* Install ncurses (ncurses-devel or libncurses-dev"
+ echo >&2 "* depending on your distribution)."
+ echo >&2 "*"
+-echo >&2 "* You may also need to install pkg-config to find the"
++echo >&2 "* You may also need to install ${HOSTPKG_CONFIG} to find the"
+ echo >&2 "* ncurses installed in a non-default location."
+ echo >&2 "*"
+ exit 1
+--- a/scripts/kconfig/nconf-cfg.sh
++++ b/scripts/kconfig/nconf-cfg.sh
+@@ -4,16 +4,16 @@
+ PKG="ncursesw menuw panelw"
+ PKG2="ncurses menu panel"
+
+-if [ -n "$(command -v pkg-config)" ]; then
+- if pkg-config --exists $PKG; then
+- echo cflags=\"$(pkg-config --cflags $PKG)\"
+- echo libs=\"$(pkg-config --libs $PKG)\"
++if [ -n "$(command -v ${HOSTPKG_CONFIG})" ]; then
++ if ${HOSTPKG_CONFIG} --exists $PKG; then
++ echo cflags=\"$(${HOSTPKG_CONFIG} --cflags $PKG)\"
++ echo libs=\"$(${HOSTPKG_CONFIG} --libs $PKG)\"
+ exit 0
+ fi
+
+- if pkg-config --exists $PKG2; then
+- echo cflags=\"$(pkg-config --cflags $PKG2)\"
+- echo libs=\"$(pkg-config --libs $PKG2)\"
++ if ${HOSTPKG_CONFIG} --exists $PKG2; then
++ echo cflags=\"$(${HOSTPKG_CONFIG} --cflags $PKG2)\"
++ echo libs=\"$(${HOSTPKG_CONFIG} --libs $PKG2)\"
+ exit 0
+ fi
+ fi
+@@ -44,7 +44,7 @@ echo >&2 "* Unable to find the ncurses p
+ echo >&2 "* Install ncurses (ncurses-devel or libncurses-dev"
+ echo >&2 "* depending on your distribution)."
+ echo >&2 "*"
+-echo >&2 "* You may also need to install pkg-config to find the"
++echo >&2 "* You may also need to install ${HOSTPKG_CONFIG} to find the"
+ echo >&2 "* ncurses installed in a non-default location."
+ echo >&2 "*"
+ exit 1
+--- a/scripts/kconfig/qconf-cfg.sh
++++ b/scripts/kconfig/qconf-cfg.sh
+@@ -3,22 +3,22 @@
+
+ PKG="Qt5Core Qt5Gui Qt5Widgets"
+
+-if [ -z "$(command -v pkg-config)" ]; then
++if [ -z "$(command -v ${HOSTPKG_CONFIG})" ]; then
+ echo >&2 "*"
+- echo >&2 "* 'make xconfig' requires 'pkg-config'. Please install it."
++ echo >&2 "* 'make xconfig' requires '${HOSTPKG_CONFIG}'. Please install it."
+ echo >&2 "*"
+ exit 1
+ fi
+
+-if pkg-config --exists $PKG; then
+- echo cflags=\"-std=c++11 -fPIC $(pkg-config --cflags $PKG)\"
+- echo libs=\"$(pkg-config --libs $PKG)\"
+- echo moc=\"$(pkg-config --variable=host_bins Qt5Core)/moc\"
++if ${HOSTPKG_CONFIG} --exists $PKG; then
++ echo cflags=\"-std=c++11 -fPIC $(${HOSTPKG_CONFIG} --cflags $PKG)\"
++ echo libs=\"$(${HOSTPKG_CONFIG} --libs $PKG)\"
++ echo moc=\"$(${HOSTPKG_CONFIG} --variable=host_bins Qt5Core)/moc\"
+ exit 0
+ fi
+
+ echo >&2 "*"
+-echo >&2 "* Could not find Qt5 via pkg-config."
++echo >&2 "* Could not find Qt5 via ${HOSTPKG_CONFIG}."
+ echo >&2 "* Please install Qt5 and make sure it's in PKG_CONFIG_PATH"
+ echo >&2 "*"
+ exit 1
+--- a/tools/objtool/Makefile
++++ b/tools/objtool/Makefile
+@@ -19,8 +19,8 @@ LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcm
+ OBJTOOL := $(OUTPUT)objtool
+ OBJTOOL_IN := $(OBJTOOL)-in.o
+
+-LIBELF_FLAGS := $(shell pkg-config libelf --cflags 2>/dev/null)
+-LIBELF_LIBS := $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
++LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
++LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
+
+ all: $(OBJTOOL)
+