[PATCH v3] config: Allow kernel installation packaging to override pkg-config

From: Chun-Tse Shao
Date: Thu Mar 03 2022 - 23:36:54 EST

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[ Resending as a separate thread ]

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@xxxxxxxxxx>
---
Changes from v2: https://lore.kernel.org/all/20220302193638.11034-1-ctshao@xxxxxxxxxx/
- Fix more open coded instance of pkg-config in scripts and certs
- Tested with make allmodconfig

Changes from v1: https://lore.kernel.org/all/20220301230629.1892828-1-ctshao@xxxxxxxxxx/
- Make the commit message more clearer.
---

Makefile | 3 ++-
certs/Makefile | 4 ++--
scripts/Makefile | 4 ++--
scripts/dtc/Makefile | 6 +++---
scripts/kconfig/gconf-cfg.sh | 10 +++++-----
scripts/kconfig/mconf-cfg.sh | 14 +++++++-------
scripts/kconfig/nconf-cfg.sh | 14 +++++++-------
scripts/kconfig/qconf-cfg.sh | 14 +++++++-------
tools/objtool/Makefile | 4 ++--
9 files changed, 37 insertions(+), 36 deletions(-)

diff --git a/Makefile b/Makefile
index daeb5c88b50b..f6c5bef7e141 100644
--- 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
diff --git a/certs/Makefile b/certs/Makefile
index 3ea7fe60823f..fa540d14ef2d 100644
--- a/certs/Makefile
+++ b/certs/Makefile
@@ -89,5 +89,5 @@ 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 $(HOSTPKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
diff --git a/scripts/Makefile b/scripts/Makefile
index ce5aa9030b74..f084f08ed176 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -14,8 +14,8 @@ hostprogs-always-$(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/dtc/Makefile b/scripts/dtc/Makefile
index 95aaf7431bff..743fc08827ea 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -18,7 +18,7 @@ fdtoverlay-objs := $(libfdt) fdtoverlay.o util.o
# 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 yaml-0.1 --libs)
+HOSTLDLIBS_dtc := $(shell $(HOSTPKG_CONFIG) yaml-0.1 --libs)
endif

# Generated files need one more search path to include headers in source tree
diff --git a/scripts/kconfig/gconf-cfg.sh b/scripts/kconfig/gconf-cfg.sh
index 480ecd8b9f41..267ef6012203 100755
--- 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 "*"
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 b520e407a8eb..21e40e9a7cd6 100755
--- 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
diff --git a/scripts/kconfig/nconf-cfg.sh b/scripts/kconfig/nconf-cfg.sh
index c212255070c0..eec46e627e5c 100755
--- 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
diff --git a/scripts/kconfig/qconf-cfg.sh b/scripts/kconfig/qconf-cfg.sh
index fa564cd795b7..839b45b5746e 100755
--- 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 92ce4fce7bc7..549acc5859e9 100644
--- 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)

--
2.35.1.616.g0bdcbb4464-goog

Next message: Matthew Wilcox: "Re: [PATCH mmotm] mm: warn on deleting redirtied only if accounted"
Previous message: Hugh Dickins: "[PATCH mmotm] mempolicy: mbind_range() set_policy() after vma_merge()"
Next in thread: Nicolas Schier: "Re: [PATCH v3] config: Allow kernel installation packaging to override pkg-config"
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