diff mbox

[RFC] kbuild: fixes in Makefile.lib

Message ID 20171110073504.13836-1-caoj.fnst@cn.fujitsu.com (mailing list archive)
State New, archived
Headers show

Commit Message

Cao jin Nov. 10, 2017, 7:35 a.m. UTC
commit

  cf4f21938e13e ("kbuild: Allow to specify composite modules with modname-m")

add modname-m support, but miss to update the corresponding multi-objs-m
defination.

commit 551559e13af1c ("kbuild: implement modules.order") miss to filter
the subdir listed in obj-m. Except that the subdirs are totally identical
between obj-y and obj-m, or else I think it will miss something.

But until now, no one has complaining about it, so I guess it just no
one has triggerred it.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
---
I found these 2 points which I think might be wrong during code
inspection, but until now, they seems didn't do anything bad, so I am not
sure this is a problem:)

 scripts/Makefile.lib | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Masahiro Yamada Nov. 13, 2017, 4:17 a.m. UTC | #1
Hi Cao,


2017-11-10 16:35 GMT+09:00 Cao jin <caoj.fnst@cn.fujitsu.com>:
> commit
>
>   cf4f21938e13e ("kbuild: Allow to specify composite modules with modname-m")
>
> add modname-m support, but miss to update the corresponding multi-objs-m
> defination.


Commit cf4f21938e13 ("kbuild: Allow to specify composite modules
with modname-m") added modname-m support, but missed to update the
corresponding multi-objs-m definition.

 - fix Commit ID style
 - Use past tense (added, missed)
 - Fix a typo (defination -> definition)






> commit 551559e13af1c ("kbuild: implement modules.order") miss to filter
> the subdir listed in obj-m. Except that the subdirs are totally identical
> between obj-y and obj-m, or else I think it will miss something.

modules.order is correct as-is
unless I am missing something.


> But until now, no one has complaining about it, so I guess it just no
> one has triggerred it.
>
> Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
> ---
> I found these 2 points which I think might be wrong during code
> inspection, but until now, they seems didn't do anything bad, so I am not
> sure this is a problem:)
>
>  scripts/Makefile.lib | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 580e605118e4..3209f303213b 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -22,7 +22,7 @@ lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
>  # Determine modorder.
>  # Unfortunately, we don't have information about ordering between -y
>  # and -m subdirs.  Just put -y's first.
> -modorder       := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
> +modorder       := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y) $(obj-m) $(obj-m:.o=.ko))


This change caused build error.

scripts/Makefile.lib:25: *** unterminated call to function 'patsubst':
missing ')'.  Stop.


And, this change is not necessary.

$(filter %/, $(obj-m)) is a subset of $(obj-m:.o=.ko)






>  # Handle objects in subdirs
>  # ---------------------------------------------------------------------------
> @@ -49,7 +49,7 @@ 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)))
> +multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))
>  multi-objs   := $(multi-objs-y) $(multi-objs-m)
>
>  # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to


This is also build error.

scripts/Makefile.lib:52: *** unterminated call to function 'foreach':
missing ')'.  Stop.


Please test your patch before submitting.


Assuming the build error will be fixed, this change is correct.




Also, modname-multi should be fixed.

modname-multi = $(sort $(foreach m,$(multi-used),\
                $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs))
$($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))



Thanks.
Cao jin Nov. 13, 2017, 9:03 a.m. UTC | #2
On 11/13/2017 12:17 PM, Masahiro Yamada wrote:
> Hi Cao,
> 
> 

>>  scripts/Makefile.lib | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
>> index 580e605118e4..3209f303213b 100644
>> --- a/scripts/Makefile.lib
>> +++ b/scripts/Makefile.lib
>> @@ -22,7 +22,7 @@ lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
>>  # Determine modorder.
>>  # Unfortunately, we don't have information about ordering between -y
>>  # and -m subdirs.  Just put -y's first.
>> -modorder       := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
>> +modorder       := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y) $(obj-m) $(obj-m:.o=.ko))
> 
> 
> This change caused build error.
> 
> scripts/Makefile.lib:25: *** unterminated call to function 'patsubst':
> missing ')'.  Stop.
> 
> 
> And, this change is not necessary.
> 
> $(filter %/, $(obj-m)) is a subset of $(obj-m:.o=.ko)
> 

Ah huh! Yes

> 
>>  # Handle objects in subdirs
>>  # ---------------------------------------------------------------------------
>> @@ -49,7 +49,7 @@ 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)))
>> +multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))
>>  multi-objs   := $(multi-objs-y) $(multi-objs-m)
>>
>>  # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
> 
> 
> This is also build error.
> 
> scripts/Makefile.lib:52: *** unterminated call to function 'foreach':
> missing ')'.  Stop.
> 
> 
> Please test your patch before submitting.
> 

Sorry for my mistake,I missed to test the patch this time incredibly:(


> Assuming the build error will be fixed, this change is correct.
> 
> 
> 
> 
> Also, modname-multi should be fixed.
> 
> modname-multi = $(sort $(foreach m,$(multi-used),\
>                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs))
> $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))
> 

Yes, I also noticed here, but fail to remember it:(

Thanks very much, Masahiro-san!
diff mbox

Patch

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 580e605118e4..3209f303213b 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -22,7 +22,7 @@  lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
 # Determine modorder.
 # Unfortunately, we don't have information about ordering between -y
 # and -m subdirs.  Just put -y's first.
-modorder	:= $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
+modorder	:= $(patsubst %/,%/modules.order, $(filter %/, $(obj-y) $(obj-m) $(obj-m:.o=.ko))
 
 # Handle objects in subdirs
 # ---------------------------------------------------------------------------
@@ -49,7 +49,7 @@  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)))
+multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))
 multi-objs   := $(multi-objs-y) $(multi-objs-m)
 
 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to