ports: Add pkg-config wrapper

tools/env.sh

@@ -5,7 +5,7 @@ export LUNA_BASE=${LUNA_BASE:-$LUNA_ROOT/base}
 [ -f "$LUNA_ROOT/env-local.sh" ] && source $LUNA_ROOT/env-local.sh
 
 export LUNA_ARCH=${LUNA_ARCH:-x86_64}
-export PATH=$LUNA_ROOT/toolchain/$LUNA_ARCH-luna/bin:$LUNA_ROOT/toolchain/dist:$PATH
+export PATH=$LUNA_ROOT/toolchain/$LUNA_ARCH-luna/bin:$LUNA_ROOT/toolchain/dist:$LUNA_ROOT/tools/exec/:$PATH
 
 if [ "$USE_MAKE" = "1" ]
 then

tools/exec/luna-pkg-config

@@ -0,0 +1,10 @@
+#!/bin/sh
+# Fill these in appropriately:
+export PKG_CONFIG_SYSROOT_DIR=$LUNA_BASE
+export PKG_CONFIG_LIBDIR=$LUNA_BASE/usr/lib/pkgconfig
+# TODO: If it works this should probably just be set to the empty string.
+export PKG_CONFIG_PATH=$PKG_CONFIG_LIBDIR
+# Use --static here if your OS only has static linking.
+# TODO: Perhaps it's a bug in the libraries if their pkg-config files doesn't
+#       record that only static libraries were built.
+exec pkg-config --static "$@"

tools/make-package.sh

@@ -70,8 +70,10 @@ esac
 
 export CC=x86_64-luna-gcc
 export CXX=x86_64-luna-g++
+export PKG_CONFIG=luna-pkg-config
 export CC_FOR_BUILD=gcc
 export CXX_FOR_BUILD=g++
+export PKG_CONFIG_FOR_BUILD=pkg-config
 
 mkdir -p $builddir
 cd $builddir