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| author | Masahiro Yamada <masahiroy@kernel.org> | 2024-04-27 16:55:02 +0200 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2024-05-09 21:34:52 +0200 |
| commit | b1992c3772e69a6fd0e3fc81cd4d2820c8b6eca0 (patch) | |
| tree | 60cc6428700d3582666b62d1d9dd741656efe1ee /drivers/scsi | |
| parent | kbuild: use $(obj)/ instead of $(src)/ for common pattern rules (diff) | |
| download | linux-b1992c3772e69a6fd0e3fc81cd4d2820c8b6eca0.tar.xz linux-b1992c3772e69a6fd0e3fc81cd4d2820c8b6eca0.zip | |
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 $(src).
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/aic7xxx/Makefile | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/scsi/aic7xxx/Makefile b/drivers/scsi/aic7xxx/Makefile index e0188ecd85b2..853c72a81ae0 100644 --- a/drivers/scsi/aic7xxx/Makefile +++ b/drivers/scsi/aic7xxx/Makefile @@ -55,9 +55,9 @@ aicasm-7xxx-opts-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT) := \ ifeq ($(CONFIG_AIC7XXX_BUILD_FIRMWARE),y) $(obj)/aic7xxx_seq.h: $(src)/aic7xxx.seq $(src)/aic7xxx.reg $(obj)/aicasm/aicasm - $(obj)/aicasm/aicasm -I$(srctree)/$(src) -r $(obj)/aic7xxx_reg.h \ + $(obj)/aicasm/aicasm -I $(src) -r $(obj)/aic7xxx_reg.h \ $(aicasm-7xxx-opts-y) -o $(obj)/aic7xxx_seq.h \ - $(srctree)/$(src)/aic7xxx.seq + $(src)/aic7xxx.seq $(aic7xxx-gen-y): $(objtree)/$(obj)/aic7xxx_seq.h @true @@ -73,9 +73,9 @@ aicasm-79xx-opts-$(CONFIG_AIC79XX_REG_PRETTY_PRINT) := \ ifeq ($(CONFIG_AIC79XX_BUILD_FIRMWARE),y) $(obj)/aic79xx_seq.h: $(src)/aic79xx.seq $(src)/aic79xx.reg $(obj)/aicasm/aicasm - $(obj)/aicasm/aicasm -I$(srctree)/$(src) -r $(obj)/aic79xx_reg.h \ + $(obj)/aicasm/aicasm -I $(src) -r $(obj)/aic79xx_reg.h \ $(aicasm-79xx-opts-y) -o $(obj)/aic79xx_seq.h \ - $(srctree)/$(src)/aic79xx.seq + $(src)/aic79xx.seq $(aic79xx-gen-y): $(objtree)/$(obj)/aic79xx_seq.h @true @@ -83,5 +83,5 @@ else $(obj)/aic79xx_reg_print.c: $(src)/aic79xx_reg_print.c_shipped endif -$(obj)/aicasm/aicasm: $(srctree)/$(src)/aicasm/*.[chyl] - $(MAKE) -C $(srctree)/$(src)/aicasm OUTDIR=$(shell pwd)/$(obj)/aicasm/ +$(obj)/aicasm/aicasm: $(src)/aicasm/*.[chyl] + $(MAKE) -C $(src)/aicasm OUTDIR=$(shell pwd)/$(obj)/aicasm/ |