RE: [PATCH] makedumpfile: honor the CFLAGS from environment variables

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On 1/28/2019 4:51 PM, Kazuhito Hagio wrote:
> On 1/28/2019 5:59 AM, Simon Horman wrote:
> > On Mon, Jan 28, 2019 at 06:50:45PM +0800, Kairui Song wrote:
> > > This make it easier for passing extra cflags, for example hardening
> > > flags could be passed in with enviroment variable.
> > >
> > > Signed-off-by: Kairui Song <kasong@xxxxxxxxxx>
> >
> > Thanks, I like this a lot.
> >
> > I would like to wake a little to see if there is review from
> > others before applying this.
> 
> I like this, too, and sorry to steal this... :-)
> 
> >
> > > ---
> > >  Makefile | 10 +++++-----
> > >  1 file changed, 5 insertions(+), 5 deletions(-)
> > >
> > > diff --git a/Makefile b/Makefile
> > > index 612b9d0..b511a78 100644
> > > --- a/Makefile
> > > +++ b/Makefile
> > > @@ -8,11 +8,11 @@ ifeq ($(strip $CC),)
> > >  CC	= gcc
> > >  endif
> > >
> > > -CFLAGS = -g -O2 -Wall -D_FILE_OFFSET_BITS=64 \
> > > -	  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE \
> > > -	  -DVERSION='"$(VERSION)"' -DRELEASE_DATE='"$(DATE)"'
> > > -CFLAGS_ARCH	= -g -O2 -Wall -D_FILE_OFFSET_BITS=64 \
> > > -		    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > > +CFLAGS_ARCH = $(CFLAGS) -g -O2 -Wall -D_FILE_OFFSET_BITS=64 \
> > > +	      -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> 
> This expands the whole CFLAGS in advance and duplicates some flags,
> so we can use ":=" instead of "=" for CFLAGS_ARCH ?
> If this is fine, I'll fix it when merging.

or it might be good to remove some redundant flags like this
at this opportunity.

CFLAGS_BASE := $(CFLAGS) -g -O2 -Wall -D_FILE_OFFSET_BITS=64 \
		-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
CFLAGS      := $(CFLAGS_BASE) -DVERSION='"$(VERSION)"' -DRELEASE_DATE='"$(DATE)"'
CFLAGS_ARCH := $(CFLAGS_BASE)

> 
> Thanks,
> Kazu
> 
> > > +CFLAGS += -g -O2 -Wall -D_FILE_OFFSET_BITS=64 \
> > > +	 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE \
> > > +	 -DVERSION='"$(VERSION)"' -DRELEASE_DATE='"$(DATE)"'
> > >  # LDFLAGS = -L/usr/local/lib -I/usr/local/include
> > >
> > >  HOST_ARCH := $(shell uname -m)
> > > --
> > > 2.20.1
> > >
> > >
> > > _______________________________________________
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> > > kexec@xxxxxxxxxxxxxxxxxxx
> > > http://lists.infradead.org/mailman/listinfo/kexec
> > >
> 
> 
> 
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