Messages in this thread | | | Date | Sat, 21 Aug 2010 09:24:54 +0200 | From | Sam Ravnborg <> | Subject | Re: [PATCH][RESEND] fix compilation error with CROSS_COMPILE |
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On Sat, Aug 21, 2010 at 02:21:33PM +0800, Wu Fengguang wrote: > $ make CROSS_COMPILE=x86_64-linux-gnu- > ... > cc1: error: unrecognized command line option "-m64" > cc1: error: unrecognized command line option "-mno-red-zone" > cc1: error: unrecognized command line option "-mcmodel=kernel" > cc1: error: unrecognized command line option "-maccumulate-outgoing-args" > > Cc: Tiago Maluta <tiago.maluta@gmail.com> > Cc: Michal Marek <mmarek@suse.cz> > Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> > --- > > Andrew: the compile error only occurs in the -mm tree > The bug is introduced by patch "Linux has an recent option to define > CROSS_COMPILE in menuconfig.". > > diff --git a/Makefile b/Makefile > index d646d69..af8864e 100644 > --- a/Makefile > +++ b/Makefile > @@ -190,7 +190,7 @@ SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ > export KBUILD_BUILDHOST := $(SUBARCH) > ARCH ?= $(SUBARCH) > CROSS_COMPILE ?= > -CROSS_COMPILE := $(shell grep CONFIG_CROSS_COMPILE .config | cut -d'"' -f2) > +CROSS_COMPILE ?= $(shell grep CONFIG_CROSS_COMPILE .config | cut -d'"' -f2)
I cannot see how this would solve your problem. Any variable assigned using := or ?= can be overrided by variable assigned on the command line like this:
make VAR=values
Please note that there is a big difference between the above and this:
VAR=value make
In the latter case you pass in VAR using the enviroment and it is just like any other environment variable as seen from make.
On top of that the upstream kernel does not have the first assignmnet to CROSS_COMPILE - so you need to update your sources (or Andrews --mm is not recent enough.
Please try again with upstream kernel and let us know what you conclude.
Sam
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