tools/pkg-config: Replace with pkgconf

pkgconf is a newer, actively maintained implementation of pkg-config that
supports more aspects of the pkg-config file specification and provides a
library interface that applications can use to incorporate intelligent
handling of pkg-config files into themselves (such as build file
generators, IDEs, and compilers). Through its pkg-config compatibility
interface (activated when it is run as "pkg-config"), it also can
completely replace the original implementation.

It is also lighterweight and does not require glib2, as pkg-config does.

On other distros, pkgconf is symlinked to pkg-config. For simplicity here,
it is renamed to pkg-config.real, as in the original package.

Initial results have been positive. As before, pkgconf works as long as
the pkg-config files point to the proper paths.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
[backported upstream fix for Meson]
Signed-off-by: Petr Štetiar <ynezz@true.cz>

tools/Makefile

@@ -22,7 +22,7 @@ ifneq ($(CONFIG_SDK)$(CONFIG_PACKAGE_kmod-b43)$(CONFIG_PACKAGE_b43legacy-firmwar
 endif
 
 tools-$(BUILD_TOOLCHAIN) += gmp mpfr mpc libelf expat
-tools-y += m4 libtool autoconf automake flex bison pkg-config mklibs zlib
+tools-y += m4 libtool autoconf automake flex bison pkgconf mklibs zlib
 tools-y += sstrip make-ext4fs e2fsprogs mtd-utils mkimage
 tools-y += firmware-utils patch-image quilt padjffs2
 tools-y += mm-macros missing-macros cmake bc findutils gengetopt patchelf
@@ -48,7 +48,7 @@ $(curdir)/squashfs/compile := $(curdir)/lzma-old/compile
 $(curdir)/squashfskit4/compile := $(curdir)/xz/compile $(curdir)/zlib/compile
 $(curdir)/quilt/compile := $(curdir)/autoconf/compile $(curdir)/findutils/compile
 $(curdir)/autoconf/compile := $(curdir)/m4/compile
-$(curdir)/automake/compile := $(curdir)/m4/compile $(curdir)/autoconf/compile $(curdir)/pkg-config/compile $(curdir)/xz/compile
+$(curdir)/automake/compile := $(curdir)/m4/compile $(curdir)/autoconf/compile $(curdir)/pkgconf/compile $(curdir)/xz/compile
 $(curdir)/gmp/compile := $(curdir)/libtool/compile
 $(curdir)/mpc/compile := $(curdir)/mpfr/compile $(curdir)/gmp/compile
 $(curdir)/mpfr/compile := $(curdir)/gmp/compile
@@ -69,7 +69,7 @@ $(curdir)/findutils/compile := $(curdir)/bison/compile
 $(curdir)/gengetopt/compile := $(curdir)/libtool/compile
 $(curdir)/patchelf/compile := $(curdir)/libtool/compile
 $(curdir)/dosfstools/compile := $(curdir)/autoconf/compile $(curdir)/automake/compile
-$(curdir)/libressl/compile := $(curdir)/pkg-config/compile
+$(curdir)/libressl/compile := $(curdir)/pkgconf/compile
 $(curdir)/mkimage/compile += $(curdir)/libressl/compile
 $(curdir)/firmware-utils/compile += $(curdir)/libressl/compile $(curdir)/zlib/compile
 $(curdir)/cmake/compile += $(curdir)/libressl/compile

tools/pkgconf/Makefile

@@ -1,4 +1,4 @@
-# 
+#
 # Copyright (C) 2006-2016 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
@@ -6,12 +6,12 @@
 #
 include $(TOPDIR)/rules.mk
 
-PKG_NAME:=pkg-config
-PKG_VERSION:=0.29.2
+PKG_NAME:=pkgconf
+PKG_VERSION:=1.6.3
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://pkgconfig.freedesktop.org/releases/
-PKG_HASH:=6fc69c01688c9458a57eb9a1664c9aba372ccda420a02bf4429fe610e7e7d591
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+PKG_SOURCE_URL:=https://distfiles.dereferenced.org/pkgconf
+PKG_HASH:=61f0b31b0d5ea0e862b454a80c170f57bad47879c0c42bd8de89200ff62ea210
 
 HOST_BUILD_PARALLEL:=1
 
@@ -19,15 +19,9 @@ include $(INCLUDE_DIR)/host-build.mk
 
 unexport PKG_CONFIG
 
-HOST_CONFIGURE_ARGS += --with-internal-glib
-
-ifeq ($(HOST_OS),Darwin)
-HOST_LDFLAGS += -framework CoreFoundation -framework Carbon
-endif
-
 define Host/Install
 	$(MAKE) -C $(HOST_BUILD_DIR) install
-	mv $(STAGING_DIR_HOST)/bin/pkg-config $(STAGING_DIR_HOST)/bin/pkg-config.real
+	mv $(STAGING_DIR_HOST)/bin/pkgconf $(STAGING_DIR_HOST)/bin/pkg-config.real
 	$(INSTALL_BIN) ./files/pkg-config $(STAGING_DIR_HOST)/bin/pkg-config
 endef
 

tools/pkgconf/patches/0001-cli-remove-version-to-modversion-remapping.patch

@@ -0,0 +1,36 @@
+From 62bbd3b664d4b03011a4b382ed20353a91c30406 Mon Sep 17 00:00:00 2001
+From: Ariadne Conill <ariadne@dereferenced.org>
+Date: Tue, 21 Jan 2020 10:32:36 -0600
+Subject: [PATCH] cli: remove --version to --modversion remapping
+
+This has been a source of frequent complaints, so we drop it.
+Resolves: https://todo.sr.ht/~kaniini/pkgconf/6
+---
+ cli/main.c | 14 ++------------
+ 1 file changed, 2 insertions(+), 12 deletions(-)
+
+diff --git a/cli/main.c b/cli/main.c
+index 563ec8f0cfcd..fc698a4f9191 100644
+--- a/cli/main.c
++++ b/cli/main.c
+@@ -1005,18 +1005,8 @@ main(int argc, char *argv[])
+ 
+ 	if ((want_flags & PKG_VERSION) == PKG_VERSION)
+ 	{
+-		if (argc > 2)
+-		{
+-			fprintf(stderr, "%s: --version specified with other options or module names, assuming --modversion.\n", argv[0]);
+-
+-			want_flags &= ~PKG_VERSION;
+-			want_flags |= PKG_MODVERSION;
+-		}
+-		else
+-		{
+-			version();
+-			return EXIT_SUCCESS;
+-		}
++		version();
++		return EXIT_SUCCESS;
+ 	}
+ 
+ 	if ((want_flags & PKG_HELP) == PKG_HELP)