Re: : NFS Oops - the third today (2.2.13)
Dominik Kubla (dominik.kubla@uni-mainz.de)
Tue, 23 Nov 1999 01:29:30 +0100
On Mon, Nov 22, 1999 at 09:32:37PM +0100, Daniel Kobras wrote:
> On 22 Nov 1999, Miquel van Smoorenburg wrote:
...
> > If you simply set CC=gcc272 you're losing the -D__KERNEL__ -I$(HPATH)
> > options, and the kernel won't build.
>
> That's why I suggested the below change to the top-level Makefile some
> months ago. Not really pretty but effective when trying to build with
> different compilers.
...
> --- Makefile.orig Thu Mar 25 13:11:08 1999
> +++ Makefile Thu Mar 25 13:13:13 1999
> @@ -18,11 +18,13 @@
> HOSTCC =gcc
> HOSTCFLAGS =-Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
>
> +TARGETCC =gcc
> +
> CROSS_COMPILE =
>
> AS =$(CROSS_COMPILE)as
> LD =$(CROSS_COMPILE)ld
> -CC =$(CROSS_COMPILE)gcc -D__KERNEL__ -I$(HPATH)
> +CC =$(CROSS_COMPILE)$(TARGETCC) -D__KERNEL__ -I$(HPATH)
> CPP =$(CC) -E
> AR =$(CROSS_COMPILE)ar
> NM =$(CROSS_COMPILE)nm
Wrong! The correct fix is not to redefine any of the standard variables!
Instead either do force the necessary flags in the make rules in Rules.make
or do something like this:
KERNELCFLAGS := -D__KERNEL__ -IS(HPATH)
and then redefine the .c.o: rule in Rules.make to include KERNELCFLAGS before
CFLAGS. As for crosscompiling: that can be dropped from the makefile and
stuffed into a shell script in the scripts directory. It is so little used
that there is really no need to clutter the main makefile with it...
Yours,
Dominik Kubla
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