kbuild: Allow kernel installation packaging to override pkg-config

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>

diff --git a/Makefile b/Makefile
index 8c7de9a..d9336e7 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -436,6 +436,7 @@ else
 HOSTCC = gcc
 HOSTCXX        = g++
 endif
+HOSTPKG_CONFIG = pkg-config
 
 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
                         -O2 -fomit-frame-pointer -std=gnu11 \
@@ -533,7 +534,7 @@ 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

diff --git a/certs/Makefile b/certs/Makefile
index d8443cf..e4a0488 100644 (file)
--- a/certs/Makefile
+++ b/certs/Makefile
@@ -74,5 +74,5 @@ targets += x509_revocation_list
 
 hostprogs := extract-cert
 
-HOSTCFLAGS_extract-cert.o = $(shell pkg-config --cflags libcrypto 2> /dev/null)
-HOSTLDLIBS_extract-cert = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
+HOSTCFLAGS_extract-cert.o = $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null)
+HOSTLDLIBS_extract-cert = $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)

diff --git a/scripts/Makefile b/scripts/Makefile
index ce5aa90..f084f08 100644 (file)
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -14,8 +14,8 @@ hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE)   += insert-sys-cert
 HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
 HOSTLDLIBS_sorttable = -lpthread
 HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
-HOSTCFLAGS_sign-file.o = $(shell pkg-config --cflags libcrypto 2> /dev/null)
-HOSTLDLIBS_sign-file = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
+HOSTCFLAGS_sign-file.o = $(shell $(HOSTPKG_CONFIG) --cflags libcrypto 2> /dev/null)
+HOSTLDLIBS_sign-file = $(shell $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
 
 ifdef CONFIG_UNWINDER_ORC
 ifeq ($(ARCH),x86_64)

diff --git a/scripts/kconfig/gconf-cfg.sh b/scripts/kconfig/gconf-cfg.sh
index 480ecd8..cbd90c2 100755 (executable)
--- 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)\"

diff --git a/scripts/kconfig/mconf-cfg.sh b/scripts/kconfig/mconf-cfg.sh
index b520e40..025b565 100755 (executable)
--- 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 package."
 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

diff --git a/scripts/kconfig/nconf-cfg.sh b/scripts/kconfig/nconf-cfg.sh
index c212255..3a10bac 100755 (executable)
--- 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 package."
 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

diff --git a/scripts/kconfig/qconf-cfg.sh b/scripts/kconfig/qconf-cfg.sh
index fa564cd..9b695e5 100755 (executable)
--- 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

diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index 0dbd397..29a9278 100644 (file)
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -19,8 +19,8 @@ LIBSUBCMD             = $(LIBSUBCMD_OUTPUT)libsubcmd.a
 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)