Re: [tree] ftrace, v16
From: Sam Ravnborg
Date: Thu Jun 12 2008 - 04:33:18 EST
Hi Ingo
> kbuild: create new CFLAGS_REMOVE_(basename).o option
But no changes to Documentation/kbuild/makefiles.txt
Documentation must be included for new kbuild features.
> +ifdef CONFIG_DYNAMIC_FTRACE
> +CFLAGS_REMOVE_ftrace.o = -pg
> +endif
I can see where this comes from as we have:
CFLAGS_ftrace.o := -foobar
But in all cases below I see the pattern:
ifdef CONFIG_FOO_BAR
CFLAGS_REMOVE_foobar.o = -pg
endif
And it would be nice to get this on one line instead.
And use a syntax we can somehow remember.
Today we have:
ccflags-y := -foobar
to add options valid for the whole file.
So we should then add:
- possibility to remove an option valid for the whole file
- add/remove an option for a single file
The suggested syntax:
ccflags-remove-y := -foobar
ccflags-<file.o>-y := -foobar
ccflags-remove-<file.o>-y := -foobar
So in the case above for ftrace we would use:
ccflags-remove-ftrace.o-$(CONFIG_DYNAMIC_FTRACE) := -pg
Comments?
PS. Yes - I saw the patches when they were sent to linux-kbuild
but I just never came around commenting them.
Sam
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