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author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-09-14 15:33:23 +0900 |
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committer | Tom Rini <trini@konsulko.com> | 2021-06-17 10:42:15 -0400 |
commit | 4899100539e0533570dd3358b41fbc6b2eb53a03 (patch) | |
tree | bec7b99aec46a03fd9bf7b0d2a8aca1e9bf6e9e4 | |
parent | e4e67d24d26ba8c241e08b5a1f7a1361971b4e37 (diff) | |
download | u-boot-WIP/kbuild-resync-v4.20.zip u-boot-WIP/kbuild-resync-v4.20.tar.gz u-boot-WIP/kbuild-resync-v4.20.tar.bz2 |
kbuild: add --include-dir flag only for out-of-tree buildWIP/kbuild-resync-v4.20
The --include-dir flag is used to include check-in Makefiles from
$(objtree) without $(srctree)/ prefix. Obviously, this is unneeded
for in-tree build. Add the flag just before changing the working
directory.
This becomes effective after invoking sub-make. Add a little bit
comments about it.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
-rw-r--r-- | Makefile | 14 |
1 files changed, 10 insertions, 4 deletions
@@ -12,10 +12,9 @@ NAME = # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. -# o Do not use make's built-in rules and variables -# (this increases performance and avoids hard-to-debug behaviour); -# o Look for make include files relative to root of kernel src -MAKEFLAGS += -rR --include-dir=$(CURDIR) +# Do not use make's built-in rules and variables +# (this increases performance and avoids hard-to-debug behaviour) +MAKEFLAGS += -rR # Determine target architecture for the sandbox include include/host_arch.h @@ -162,6 +161,13 @@ KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ $(if $(KBUILD_OUTPUT),, \ $(error failed to create output directory "$(saved-output)")) +# Look for make include files relative to root of kernel src +# +# This does not become effective immediately because MAKEFLAGS is re-parsed +# once after the Makefile is read. It is OK since we are going to invoke +# 'sub-make' below. +MAKEFLAGS += --include-dir=$(CURDIR) + PHONY += $(MAKECMDGOALS) sub-make $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |