$NetBSD: patch-bindings_cpp_Makefile.am,v 1.1 2020/04/17 15:50:03 nia Exp $

Correct path for pkgconfig files.

--- bindings/cpp/Makefile.am.orig	2016-10-30 01:23:04.000000000 +0000
+++ bindings/cpp/Makefile.am
@@ -3,5 +3,5 @@ SUBDIRS = lib include bin 
 
 EXTRA_DIST = portaudiocpp.pc
 
-pkgconfigdir = $(libdir)/pkgconfig
+pkgconfigdir = $(prefix)/lib/pkgconfig
 pkgconfig_DATA = portaudiocpp.pc