--- meson.build.orig	2024-01-11 13:10:47 UTC
+++ meson.build
@@ -98,7 +98,7 @@ install_datadir = get_option('datadir')
 install_includedir = get_option('includedir')
 install_libdir = get_option('libdir')
 install_datadir = get_option('datadir')
-install_pkgconfigdir = install_libdir / 'pkgconfig'
+install_pkgconfigdir = join_paths('libdata', 'pkgconfig')
 
 # Dependencies.
 # xmlxx_build_dep: Dependencies when building the libxml++ library.
@@ -370,7 +370,7 @@ xmlxxconfig_h_meson = files('libxml++config.h.meson')
 )
 
 xmlxxconfig_h_meson = files('libxml++config.h.meson')
-install_includeconfigdir = install_libdir / xmlxx_pcname / 'include'
+install_includeconfigdir = install_includedir / xmlxx_pcname / 'include'
 configure_file(
   input: xmlxxconfig_h_meson,
   output: 'libxml++config.h',