From f871c5d99d1efb11136a7f39b640e25afa971df9 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Mon, 7 Jan 2019 05:49:27 +0000
Subject: [PATCH] Create MK_LOADER_VERBOSE and connect it to ELF_VERBOSE in the
 loader code.

PR: 18498
Submitted by: mellon at pobox dot com
---
 share/mk/src.opts.mk                    | 1 +
 stand/loader.mk                         | 4 ++++
 tools/build/options/WITH_LOADER_VERBOSE | 5 +++++
 3 files changed, 10 insertions(+)
 create mode 100644 tools/build/options/WITH_LOADER_VERBOSE

diff --git a/share/mk/src.opts.mk b/share/mk/src.opts.mk
index 54fcdff9d83f..7aa53f35e5f4 100644
--- a/share/mk/src.opts.mk
+++ b/share/mk/src.opts.mk
@@ -204,6 +204,7 @@ __DEFAULT_NO_OPTIONS = \
     LIBSOFT \
     LOADER_FIREWIRE \
     LOADER_FORCE_LE \
+    LOADER_VERBOSE \
     NAND \
     OFED_EXTRA \
     OPENLDAP \
diff --git a/stand/loader.mk b/stand/loader.mk
index f0d6859764ea..e5149191fb47 100644
--- a/stand/loader.mk
+++ b/stand/loader.mk
@@ -155,6 +155,10 @@ vers.c: ${LDRSRC}/newvers.sh ${VERSION_FILE}
 	sh ${LDRSRC}/newvers.sh ${REPRO_FLAG} ${VERSION_FILE} \
 	    ${NEWVERSWHAT}
 
+.if ${MK_LOADER_VERBOSE} != "no"
+CFLAGS+=	-DELF_VERBOSE
+.endif
+
 .if !empty(HELP_FILES)
 HELP_FILES+=	${LDRSRC}/help.common
 
diff --git a/tools/build/options/WITH_LOADER_VERBOSE b/tools/build/options/WITH_LOADER_VERBOSE
new file mode 100644
index 000000000000..a859c7a1952c
--- /dev/null
+++ b/tools/build/options/WITH_LOADER_VERBOSE
@@ -0,0 +1,5 @@
+.\" $FreeBSD$
+Set to build with extra verbose debugging in the loader.
+May explode already nearly too large loader over the limit.
+Use with care.
+