Missed the new glib/gstringchunk.h header that needed to be installed as
well.
copy ..\..\..\glib\gstdio.h $(CopyDir)\include\glib-$(ApiVersion)\glib
+copy ..\..\..\glib\gstringchunk.h $(CopyDir)\include\glib-$(ApiVersion)\glib
+
copy ..\..\..\glib\gstrfuncs.h $(CopyDir)\include\glib-$(ApiVersion)\glib
copy ..\..\..\glib\gstring.h $(CopyDir)\include\glib-$(ApiVersion)\glib
copy ..\..\..\glib\gslist.h $(OutDir)\include\glib-$(ApiVersion)\glib
\r
copy ..\..\..\glib\gspawn.h $(OutDir)\include\glib-$(ApiVersion)\glib
\r
copy ..\..\..\glib\gstdio.h $(OutDir)\include\glib-$(ApiVersion)\glib
\r
+copy ..\..\..\glib\gstringchunk.h $(OutDir)\include\glib-$(ApiVersion)\glib
\r
copy ..\..\..\glib\gstrfuncs.h $(OutDir)\include\glib-$(ApiVersion)\glib
\r
copy ..\..\..\glib\gstring.h $(OutDir)\include\glib-$(ApiVersion)\glib
\r
copy ..\..\..\glib\gtestutils.h $(OutDir)\include\glib-$(ApiVersion)\glib
\r