$NetBSD: patch-xen_include_Makefile,v 1.1 2023/11/21 11:37:03 bouyer Exp $

also filter out flags added by pkgsrc

--- xen/include/Makefile.orig	2023-10-06 19:17:42.000000000 +0200
+++ xen/include/Makefile	2023-10-11 16:33:13.599360669 +0200
@@ -56,7 +56,7 @@
 cmd_stub_h = echo '/* empty */' >$@
 
 quiet_cmd_compat_i = CPP     $@
-cmd_compat_i = $(CPP) $(filter-out -Wa$(comma)% -include %/include/xen/config.h,$(XEN_CFLAGS)) $(cppflags-y) -o $@ $<
+cmd_compat_i = $(CPP) $(filter-out -Wa$(comma)% -g3 -include %/include/xen/config.h,$(XEN_CFLAGS)) $(cppflags-y) -o $@ $<
 
 quiet_cmd_compat_c = GEN     $@
 cmd_compat_c = \