commit 6278c6df4ff2123725efc10e5e6ea48d02fda55a
Author: Dan Horák <dan@danny.cz>
Date:   Mon Aug 10 12:59:04 2020 +0200

    external/ffspart: define $(sbindir) for Makefile
    
    Right now the $(sbindir) variable isn't defined, so the binary gets installed
    directly into $(DESTDIR).
    
    Signed-off-by: Dan Horák <dan@danny.cz>

diff --git a/external/ffspart/rules.mk b/external/ffspart/rules.mk
index 40972c688..e006dc5b7 100644
--- a/external/ffspart/rules.mk
+++ b/external/ffspart/rules.mk
@@ -10,6 +10,9 @@ LIBFLASH_SRC := $(addprefix libflash/,$(LIBFLASH_FILES))
 OBJS	+= $(LIBFLASH_OBJS)
 OBJS	+= common-arch_flash.o
 
+prefix = /usr/local/
+sbindir = $(prefix)/sbin
+
 CC	= $(CROSS_COMPILE)gcc
 
 FFSPART_VERSION ?= $(shell ./make_version.sh $(EXE))