diff mbox series

[4/5] kbuild: simplify modname calculation

Message ID 1520471103-10089-5-git-send-email-yamada.masahiro@socionext.com
State Superseded
Headers show
Series kbuild: always define KBUILD_MODNAME, and clean-up/fix modname | expand

Commit Message

Masahiro Yamada March 8, 2018, 1:05 a.m. UTC
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(-)

-- 
2.7.4

Comments

Cao jin March 9, 2018, 3:12 a.m. UTC | #1
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
diff mbox series

Patch

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