mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-05-24 10:39:52 +00:00
b1992c3772
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>
|
||
|---|---|---|
| .. | ||
| agn.h | ||
| calib.c | ||
| calib.h | ||
| commands.h | ||
| debugfs.c | ||
| dev.h | ||
| devices.c | ||
| led.c | ||
| led.h | ||
| lib.c | ||
| mac80211.c | ||
| main.c | ||
| Makefile | ||
| power.c | ||
| power.h | ||
| rs.c | ||
| rs.h | ||
| rx.c | ||
| rxon.c | ||
| scan.c | ||
| sta.c | ||
| tt.c | ||
| tt.h | ||
| tx.c | ||
| ucode.c | ||