From c6b00391b3af4dea7986bb06ab08d21e1abc3b51 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Sat, 28 Sep 2019 14:20:28 +0000
Subject: [PATCH] Disable build of LOCAL_MODULES for cross-builds by default.

WITHOUT_LOCAL_MODULES can be set to disable LOCAL_MODULES for native
builds.  WITH_LOCAL_MODULES can be set to leave it enabled for cross
builds.

This does not use a knob in kern.opts.mk because the options framework
does not currently support options whose default varies on the build
type.  I discussed a few options there with Warner (e.g. maybe having
a tri-state where the default value is "auto" and having Makefile.inc1
apply logic when MK_LOCAL_MODULES is set to "auto"), but Warner ok'd
this approach for now until a better solution is implemented.

Requested by:	many
Reviewed by:	imp (in person at EuroBSDCon)
Differential Revision:	https://reviews.freebsd.org/D21608
---
 Makefile.inc1 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Makefile.inc1 b/Makefile.inc1
index 3ca58b38e5ff..c4826cfb35cf 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -678,6 +678,10 @@ CROSSENV+=	BUILD_TOOLS_META=.NOMETA
 .if defined(TARGET_CFLAGS)
 CROSSENV+=	${TARGET_CFLAGS}
 .endif
+.if (${TARGET} != ${MACHINE} && !defined(WITH_LOCAL_MODULES)) || \
+    defined(WITHOUT_LOCAL_MODULES)
+CROSSENV+=	LOCAL_MODULES=
+.endif
 
 BOOTSTRAPPING_OSRELDATE?=${OSRELDATE}