[PATCH] bpftool: Set srctree correctly when not building out of source tree

[Daan De Meyer <daan.j.demeyer@xxxxxxxxx>]

This allows building bpftool directly via "make -C tools/bpf/bpftool".
---
 tools/bpf/bpftool/Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index ba927379eb20..7c7d731077c9 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -2,6 +2,12 @@
 include ../../scripts/Makefile.include
 
 ifeq ($(srctree),)
+update_srctree := 1
+endif
+ifndef building_out_of_srctree
+update_srctree := 1
+endif
+ifeq ($(update_srctree),1)
 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
-- 
2.47.0