mirror of
https://github.com/torvalds/linux
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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>
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| .. | ||
| cpu.c | ||
| cpu.h | ||
| cpuidle-s3c64xx.c | ||
| crag6410.h | ||
| dev-audio-s3c64xx.c | ||
| dev-uart-s3c64xx.c | ||
| dev-uart.c | ||
| devs.c | ||
| devs.h | ||
| fb.h | ||
| gpio-cfg-helpers.h | ||
| gpio-cfg.h | ||
| gpio-core.h | ||
| gpio-samsung-s3c64xx.h | ||
| gpio-samsung.c | ||
| gpio-samsung.h | ||
| iic-core.h | ||
| init.c | ||
| irq-pm-s3c64xx.c | ||
| irq-uart-s3c64xx.h | ||
| irqs-s3c64xx.h | ||
| irqs.h | ||
| Kconfig | ||
| Kconfig.s3c64xx | ||
| keypad.h | ||
| mach-crag6410-module.c | ||
| mach-crag6410.c | ||
| mach-s3c64xx-dt.c | ||
| Makefile | ||
| Makefile.s3c64xx | ||
| map-base.h | ||
| map-s3c.h | ||
| map-s3c64xx.h | ||
| map-s5p.h | ||
| map.h | ||
| pl080.c | ||
| platformdata.c | ||
| pm-common.c | ||
| pm-common.h | ||
| pm-core-s3c64xx.h | ||
| pm-core.h | ||
| pm-gpio.c | ||
| pm-s3c64xx.c | ||
| pm.c | ||
| pm.h | ||
| pwm-core.h | ||
| regs-clock-s3c64xx.h | ||
| regs-clock.h | ||
| regs-gpio-memport-s3c64xx.h | ||
| regs-gpio-s3c64xx.h | ||
| regs-gpio.h | ||
| regs-irq-s3c64xx.h | ||
| regs-irq.h | ||
| regs-irqtype.h | ||
| regs-modem-s3c64xx.h | ||
| regs-sys-s3c64xx.h | ||
| regs-syscon-power-s3c64xx.h | ||
| regs-usb-hsotg-phy-s3c64xx.h | ||
| s3c64xx.c | ||
| s3c64xx.h | ||
| s3c6410.c | ||
| sdhci.h | ||
| setup-fb-24bpp-s3c64xx.c | ||
| setup-i2c0-s3c64xx.c | ||
| setup-i2c1-s3c64xx.c | ||
| setup-keypad-s3c64xx.c | ||
| setup-sdhci-gpio-s3c64xx.c | ||
| setup-spi-s3c64xx.c | ||
| setup-usb-phy-s3c64xx.c | ||
| sleep-s3c64xx.S | ||
| usb-phy.h | ||
| wakeup-mask.c | ||
| wakeup-mask.h | ||