On Thu, 26 May 2011, Stefan Berger wrote:
> With the below patch I can build either ppc (-m32) or ppc64 (-m64) versions of
> Qemu (on a ppc64 host) when passing these compiler flags via 'configure ...
> --extra-cflags="-m32"'.
>
> Signed-off-by: Stefan Berger <[email protected]>
>
> ---
> configure | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> Index: qemu-git/configure
> ===================================================================
> --- qemu-git.orig/configure
> +++ qemu-git/configure
> @@ -807,7 +807,14 @@ case "$cpu" in
> arm*)
> host_guest_base="yes"
> ;;
> - ppc*)
> + ppc)
> + QEMU_CFLAGS="-m32 $QEMU_CFLAGS"
> + LDFLAGS="-m32 $LDFLAGS"
> + host_guest_base="yes"
> + ;;
> + ppc64)
> + QEMU_CFLAGS="-m64 $QEMU_CFLAGS"
> + LDFLAGS="-m64 $LDFLAGS"
> host_guest_base="yes"
> ;;
> mips*)
>
This isn't right, if one has particular toolchain and wants to build
something that defaults to a different bitlength he should be able to
do that, this patch attempts to outsmart the defaults and furthermore
prevents one from overriding the settings.
P.S. host-pcc... pcc?
P.P.S. On the ppc64 machine i have, gcc defaults to 32bit and for a
good reason - 64bit code is quite a bit slower when running
typical workloads (64bit guest not being one of them though)
--
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