cross-gcc : FPU type error

[Dimitry Andric]

On 2004-05-25 at 20:24:45 Poornachandran, RajeshX wrote:

> [root@adetest1 linux-2.6.5]# make zImage
>   CHK     include/linux/version.h
>   UPD     include/linux/version.h
>   SYMLINK include/asm -> include/asm-arm
>   SPLIT   include/linux/autoconf.h -> include/config/*
>   HOSTCC  scripts/conmakehash
>   HOSTCC  scripts/kallsyms
>   CC      scripts/empty.o
> Assembler messages:
> Error: use of old and new-style options to set FPU type
> make[1]: *** [scripts/empty.o] Error 1
> make: *** [scripts] Error 2

When you get such errors, first try building with "make V=1", to get
verbose output.  Then you (and we :) can see precisely which command
fails.

Now, as to your specific problem, I guess you need to edit
arch/arm/Makefile, and change:

  CFLAGS          +=-mapcs-32 $(arch-y) $(tune-y) -mshort-load-bytes -msoft-float -Wa,-mno-fpu -Uarm
  AFLAGS          +=-mapcs-32 $(arch-y) $(tune-y) -msoft-float -Wa,-mno-fpu

to:

  CFLAGS          +=-mapcs-32 $(arch-y) $(tune-y) -malignment-traps -msoft-float
  AFLAGS          +=-mapcs-32 $(arch-y) $(tune-y) -msoft-float

Here I assume that your gcc already passes the correct arguments to
the assembler.  (Did you use my gcc 3.4.0 softfloat patch, btw? If you
did, you don't need the -msoft-float flag either.)
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