gnustep-base/mknfonts: respect ${PKG_CONFIG}, depend on pkgconfig

Signed-off-by: Sam James <sam@gentoo.org>

gnustep-base/mknfonts/files/mknfonts-0.5-pkgconfig.patch

@@ -1,14 +1,13 @@
-diff -Naur mknfonts-0.5.orig/GNUmakefile mknfonts-0.5/GNUmakefile
---- mknfonts-0.5.orig/GNUmakefile	2002-09-28 12:27:26.000000000 +0200
-+++ mknfonts-0.5/GNUmakefile	2018-06-29 11:27:01.871588321 +0200
+--- a/GNUmakefile
++++ b/GNUmakefile
 @@ -9,8 +9,8 @@
  
  ADDITIONAL_OBJCFLAGS += -Wall -O2
  
 -ADDITIONAL_INCLUDE_DIRS += `freetype-config --cflags`
 -ADDITIONAL_LDFLAGS += `freetype-config --libs`
-+ADDITIONAL_INCLUDE_DIRS += `pkg-config --cflags freetype2`
-+ADDITIONAL_LDFLAGS += `pkg-config --libs freetype2`
++ADDITIONAL_INCLUDE_DIRS += `${PKG_CONFIG} --cflags freetype2`
++ADDITIONAL_LDFLAGS += `${PKG_CONFIG} --libs freetype2`
  
  mknfonts_OBJC_FILES = mknfonts.m
  

gnustep-base/mknfonts/files/mknfonts-rename.patch

@@ -1,5 +1,5 @@
---- mknfonts-0.5/mknfonts.m.orig	2007-05-03 11:46:27.000000000 +0200
-+++ mknfonts-0.5/mknfonts.m	2007-05-03 11:47:34.000000000 +0200
+--- a/mknfonts.m
++++ b/mknfonts.m
 @@ -310,12 +310,6 @@
  			{
  				fi=[faceinfos objectAtIndex: i];

gnustep-base/mknfonts/mknfonts-0.5-r3.ebuild

@@ -1,8 +1,8 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
-inherit gnustep-base
+inherit gnustep-base toolchain-funcs
 
 DESCRIPTION="A tool to create .nfont packages for use with gnustep-back-art"
 HOMEPAGE="https://packages.debian.org/mknfonts.tool"
@@ -15,8 +15,8 @@ IUSE=""
 
 RDEPEND="gnustep-base/gnustep-gui
 	>=media-libs/freetype-2.1"
-DEPEND="${RDEPEND}
-	virtual/pkgconfig"
+DEPEND="${RDEPEND}"
+BDEPEND="virtual/pkgconfig"
 
 PATCHES=(
 	"${FILESDIR}"/${PN}-rename.patch
@@ -26,6 +26,8 @@ PATCHES=(
 src_prepare() {
 	default
 
+	tc-export PKG_CONFIG
+
 	# Correct link command for --as-needed
 	sed -i -e "s/ADDITIONAL_LDFLAGS/ADDITIONAL_TOOL_LIBS/" GNUmakefile || die
 }