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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-03-30 15:04:17 +0300
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-04-02 17:28:04 +0300
commita9a49c2ad9b9b8ee20668c15ca2b806dbed8ea40 (patch)
treebb1ff85715935f583ef536b2a13a5a5ce9433b44 /scripts/Makefile.build
parent48b5ffd1268788afb01525e71e864e901e9aa070 (diff)
downloadlinux-a9a49c2ad9b9b8ee20668c15ca2b806dbed8ea40.tar.xz
kbuild: use $(srctree) instead of KBUILD_SRC to check out-of-tree build
KBUILD_SRC was conventionally used for some different purposes: [1] To remember the source tree path [2] As a flag to check if sub-make is already done [3] As a flag to check if Kbuild runs out of tree For [1], we do not need to remember it because the top Makefile can compute it by $(realpath $(dir $(lastword $(MAKEFILE_LIST)))) [2] has been replaced with self-commenting 'sub_make_done'. For [3], we can distinguish in-tree/out-of-tree by comparing $(srctree) and '.' This commit converts [3] to prepare for the KBUILD_SRC removal. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/Makefile.build')
-rw-r--r--scripts/Makefile.build2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 76ca30cc4791..9dddfb6f554e 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -501,7 +501,7 @@ existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
-ifneq ($(KBUILD_SRC),)
+ifneq ($(srctree),.)
# Create directories for object files if they do not exist
obj-dirs := $(sort $(obj) $(patsubst %/,%, $(dir $(targets))))
# If targets exist, their directories apparently exist. Skip mkdir.