Re: [PATCH 05/24] i2c: change to new flag variable

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On 13:26 Sat 25 Sep     , Jean Delvare wrote:
> On Fri, 24 Sep 2010 12:17:15 -0700, matt mooney wrote:
> > Replace EXTRA_CFLAGS with ccflags-y.
> > 
> > Signed-off-by: matt mooney <mfm@xxxxxxxxxxxxx>
> > ---
> >  drivers/i2c/Makefile        |    4 +---
> >  drivers/i2c/algos/Makefile  |    4 +---
> >  drivers/i2c/busses/Makefile |    4 +---
> >  drivers/i2c/muxes/Makefile  |    4 +---
> >  4 files changed, 4 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
> > index c00fd66..23ac61e 100644
> > --- a/drivers/i2c/Makefile
> > +++ b/drivers/i2c/Makefile
> > @@ -9,6 +9,4 @@ obj-$(CONFIG_I2C_CHARDEV)	+= i2c-dev.o
> >  obj-$(CONFIG_I2C_MUX)		+= i2c-mux.o
> >  obj-y				+= algos/ busses/ muxes/
> >  
> > -ifeq ($(CONFIG_I2C_DEBUG_CORE),y)
> > -EXTRA_CFLAGS += -DDEBUG
> > -endif
> > +ccflags-$(CONFIG_I2C_DEBUG_CORE) := -DDEBUG
> > diff --git a/drivers/i2c/algos/Makefile b/drivers/i2c/algos/Makefile
> > index 18b3e96..215303f 100644
> > --- a/drivers/i2c/algos/Makefile
> > +++ b/drivers/i2c/algos/Makefile
> > @@ -6,6 +6,4 @@ obj-$(CONFIG_I2C_ALGOBIT)	+= i2c-algo-bit.o
> >  obj-$(CONFIG_I2C_ALGOPCF)	+= i2c-algo-pcf.o
> >  obj-$(CONFIG_I2C_ALGOPCA)	+= i2c-algo-pca.o
> >  
> > -ifeq ($(CONFIG_I2C_DEBUG_ALGO),y)
> > -EXTRA_CFLAGS += -DDEBUG
> > -endif
> > +ccflags-$(CONFIG_I2C_DEBUG_ALGO) := -DDEBUG
> > diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
> > index c3ef492..033ad41 100644
> > --- a/drivers/i2c/busses/Makefile
> > +++ b/drivers/i2c/busses/Makefile
> > @@ -76,6 +76,4 @@ obj-$(CONFIG_I2C_STUB)		+= i2c-stub.o
> >  obj-$(CONFIG_SCx200_ACB)	+= scx200_acb.o
> >  obj-$(CONFIG_SCx200_I2C)	+= scx200_i2c.o
> >  
> > -ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
> > -EXTRA_CFLAGS += -DDEBUG
> > -endif
> > +ccflags-$(CONFIG_I2C_DEBUG_BUS) := -DDEBUG
> > diff --git a/drivers/i2c/muxes/Makefile b/drivers/i2c/muxes/Makefile
> > index bd83b52..6f49786 100644
> > --- a/drivers/i2c/muxes/Makefile
> > +++ b/drivers/i2c/muxes/Makefile
> > @@ -3,6 +3,4 @@
> >  
> >  obj-$(CONFIG_I2C_MUX_PCA954x)	+= pca954x.o
> >  
> > -ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
> > -EXTRA_CFLAGS += -DDEBUG
> > -endif
> > +ccflags-$(CONFIG_I2C_DEBUG_BUS) := -DDEBUG
> 
> If this is the way the whole kernel is going, I have no objection. 

Sam had implemented these newer style flag variables a while back as an
eloquent way of handling conditional flags. A lot of newer (and some older)
modules and subsystems were using them already, so to provide uniformity and for
an eventual removal of the deprecated flags, I converted all remaining instances
to the newer style. (IMHO, I think it flows better with the way the rest of the
build system works.)

-mfm
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