linux/scripts/dtc
Masahiro Yamada b1992c3772 kbuild: use $(src) instead of $(srctree)/$(src) for source directory
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for
checked-in source files. It is merely a convention without any functional
difference. In fact, $(obj) and $(src) are exactly the same, as defined
in scripts/Makefile.build:

    src := $(obj)

When the kernel is built in a separate output directory, $(src) does
not accurately reflect the source directory location. While Kbuild
resolves this discrepancy by specifying VPATH=$(srctree) to search for
source files, it does not cover all cases. For example, when adding a
header search path for local headers, -I$(srctree)/$(src) is typically
passed to the compiler.

This introduces inconsistency between upstream and downstream Makefiles
because $(src) is used instead of $(srctree)/$(src) for the latter.

To address this inconsistency, this commit changes the semantics of
$(src) so that it always points to the directory in the source tree.

Going forward, the variables used in Makefiles will have the following
meanings:

  $(obj)     - directory in the object tree
  $(src)     - directory in the source tree  (changed by this commit)
  $(objtree) - the top of the kernel object tree
  $(srctree) - the top of the kernel source tree

Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced
with $(src).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2024-05-10 04:34:52 +09:00
..
include-prefixes dts: add riscv include prefix link 2023-03-27 22:45:22 +02:00
libfdt scripts/dtc: Update to upstream version v1.6.1-66-gabbd523bae6e 2023-02-06 11:03:00 -06:00
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
checks.c scripts/dtc: Update to upstream version v1.6.1-63-g55778a03df61 2022-11-10 08:37:19 -06:00
data.c scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9 2021-02-04 09:00:04 -06:00
dt_to_config treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 473 2019-06-19 17:09:11 +02:00
dt-extract-compatibles dt: dt-extract-compatibles: Don't follow symlinks when walking tree 2023-11-09 11:56:39 -06:00
dtc-lexer.l scripts/dtc: Update to upstream version v1.6.1-63-g55778a03df61 2022-11-10 08:37:19 -06:00
dtc-parser.y scripts/dtc: Update to upstream version v1.6.1-66-gabbd523bae6e 2023-02-06 11:03:00 -06:00
dtc.c scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8 2021-10-29 08:55:38 -05:00
dtc.h scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8 2021-10-29 08:55:38 -05:00
dtx_diff scripts/dtc: dtx_diff: remove broken example from help text 2022-01-17 16:26:44 -06:00
fdtget.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
fdtoverlay.c scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9 2021-02-04 09:00:04 -06:00
fdtput.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
flattree.c scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8 2021-10-29 08:55:38 -05:00
fstree.c scripts/dtc: Update to upstream version v1.5.1-22-gc40aeb60b47a 2019-12-26 15:39:13 -07:00
livetree.c scripts/dtc: Update to upstream version v1.6.1-63-g55778a03df61 2022-11-10 08:37:19 -06:00
Makefile kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
of_unittest_expect of: add processing of EXPECT_NOT to of_unittest_expect 2023-02-17 15:46:20 -06:00
srcpos.c scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9 2021-02-04 09:00:04 -06:00
srcpos.h scripts/dtc: Update to upstream version v1.5.0-30-g702c1b6c0e73 2019-06-21 12:53:52 -06:00
treesource.c scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8 2021-10-29 08:55:38 -05:00
update-dtc-source.sh dt-bindings: kbuild: Use DTB files for validation 2022-03-11 11:16:16 -06:00
util.c scripts/dtc: Update to upstream version v1.6.1-63-g55778a03df61 2022-11-10 08:37:19 -06:00
util.h scripts/dtc: Update to upstream version v1.6.1-63-g55778a03df61 2022-11-10 08:37:19 -06:00
version_gen.h scripts/dtc: Update to upstream version v1.6.1-66-gabbd523bae6e 2023-02-06 11:03:00 -06:00
yamltree.c scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8 2021-10-29 08:55:38 -05:00