PKGCONF_PKG_PKGF_DONT_FILTER_INTERNAL_CFLAGS
want_client_flags |= PKGCONF_PKG_PKGF_DONT_FILTER_INTERNAL_CFLAGS;
unsigned int skip_flags = (client->flags & PKGCONF_PKG_PKGF_DONT_FILTER_INTERNAL_CFLAGS) == 0 ? PKGCONF_PKG_DEPF_INTERNAL : 0;