From cd44f5be37d994a59b6afac8eb3b3827ad63212f Mon Sep 17 00:00:00 2001
From: Matthew Macy <mmacy@freebsd.org>
Date: Tue, 24 Nov 2020 09:16:46 -0800
Subject: [PATCH] FreeBSD: decouple ZFS_DEBUG from kernel debug settings

Reviewed-by: Martelli Nikola @martellini
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #11213
---
 module/Makefile.bsd | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/module/Makefile.bsd b/module/Makefile.bsd
index 1acf543ac0c7..e7cddcc5bb5e 100644
--- a/module/Makefile.bsd
+++ b/module/Makefile.bsd
@@ -39,7 +39,13 @@ CFLAGS+= -DHAVE_AVX2 -DHAVE_AVX -D__x86_64 -DHAVE_SSE2 -DHAVE_AVX512F -DHAVE_SSS
 .endif
 
 .if defined(WITH_DEBUG) && ${WITH_DEBUG} == "true"
-CFLAGS+= -DINVARIANTS -DWITNESS -g -O0 -DZFS_DEBUG -DOPENSOLARIS_WITNESS
+CFLAGS+= -DZFS_DEBUG -g
+.if defined(WITH_INVARIANTS) && ${WITH_INVARIANTS} == "true"
+ CFLAGS+= -DINVARIANTS -DWITNESS -DOPENSOLARIS_WITNESS
+.endif
+.if defined(WITH_O0) && ${WITH_O0} == "true"
+ CFLAGS+= -O0
+.endif
 .else
 CFLAGS += -DNDEBUG
 .endif