lkml.org 
[lkml]   [2018]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 4/5] kbuild: simplify modname calculation
From
Date


On 03/08/2018 09:05 AM, Masahiro Yamada wrote:
> modname can be calculated much more simply. If modname-multi is
> empty, it is a single-used object. So, modname = $(basetarget).> Otherwise, modname = $(modname-multi).
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
>
> scripts/Makefile.build | 12 +-----------
> scripts/Makefile.lib | 7 -------
> 2 files changed, 1 insertion(+), 18 deletions(-)
>
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index 4f2b25d..b8aecb7 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -131,17 +131,7 @@ $(real-objs-m:.o=.lst): quiet_modtag := [M]
>
> $(obj-m) : quiet_modtag := [M]
>
> -# Default for not multi-part modules
> -modname = $(basetarget)
> -
> -$(multi-objs-m) : modname = $(modname-multi)
> -$(multi-objs-m:.o=.i) : modname = $(modname-multi)
> -$(multi-objs-m:.o=.s) : modname = $(modname-multi)
> -$(multi-objs-m:.o=.lst) : modname = $(modname-multi)
> -$(multi-objs-y) : modname = $(modname-multi)
> -$(multi-objs-y:.o=.i) : modname = $(modname-multi)
> -$(multi-objs-y:.o=.s) : modname = $(modname-multi)
> -$(multi-objs-y:.o=.lst) : modname = $(modname-multi)
> +modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
>
> quiet_cmd_cc_s_c = CC $(quiet_modtag) $@
> cmd_cc_s_c = $(CC) $(c_flags) $(DISABLE_LTO) -fverbose-asm -S -o $@ $<
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 9217d40..e4e8e1b 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -47,11 +47,6 @@ multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m
> multi-used := $(multi-used-y) $(multi-used-m)
> single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
>
> -# Build list of the parts of our composite objects, our composite
> -# objects depend on those (obviously)
> -multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
> -multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)))
> -
> # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
> # tell kbuild to descend
> subdir-obj-y := $(filter %/built-in.o, $(obj-y))
> @@ -80,8 +75,6 @@ real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
> single-used-m := $(addprefix $(obj)/,$(single-used-m))
> multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
> multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
> -multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
> -multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
> subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
>
> # These flags are needed for modversions and compiling, so we define them here
>

multi-objs-y/m seems only exist for rules above with target-specific
variable assignment. A great simplification, So

Reviewed-by: Cao jin <caoj.fnst@cn.fujitsu.com>
--
Sincerely,
Cao jin


\
 
 \ /
  Last update: 2018-03-09 04:14    [W:0.080 / U:5.040 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site