kbuild: unexport abs_srctree and abs_objtree

Commit 25b146c5b8ce ("kbuild: allow Kbuild to start from any directory")
exported abs_srctree and abs_objtree to avoid recomputation after the
sub-make. However, this approach turned out to be fragile.

Commit 5fa94ceb793e ("kbuild: set correct abs_srctree and abs_objtree
for package builds") moved them above "ifneq ($(sub_make_done),1)",
eliminating the need for exporting them.

These are only needed in the top Makefile. If an absolute path is
required in sub-directories, you can use $(abspath ) or $(realpath )
as needed.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>

1 files changed, 2 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 859b0f52949e..104e62560eed 100644
--- a/Makefile
+++ b/Makefile
@@ -39,8 +39,8 @@ __all:
 # prepare rule.
 
 this-makefile := $(lastword $(MAKEFILE_LIST))
-export abs_srctree := $(realpath $(dir $(this-makefile)))
-export abs_objtree := $(CURDIR)
+abs_srctree := $(realpath $(dir $(this-makefile)))
+abs_objtree := $(CURDIR)
 
 ifneq ($(sub_make_done),1)