Re: [Qemu-devel] Cross-compiling QEMU for ARM

[Peter Maydell]

On 10 March 2013 14:36, Leonid Bloch <address@hidden> wrote:
> I want to cross compile QEMU itself to run on ARM, but all my searches
> lead me to tutorials for cross compiling other programs for ARM and
> testing them with QEMU, which is not what I need.
> The only relevant link I found was this:
> http://lists.gnu.org/archive/html/qemu-devel/2011-05/msg00099.html
> But this doesn't work for me as well.
>
> I am using Buildroot as my toolchain, and the farthest I got was:
> $ ./configure --cpu=armv7hl --static --cc=arm-linux-cc

Don't specify --cpu : this is almost always going to break things,
and you should just let configure work it out based on your compiler.
Don't just specify --cc, because we want to run other cross tools
too. Instead, use --cross-prefix=arm-linux-gnueabi- (or whatever
the correct prefix is for your toolchain).
You'll also need to have a cross-build environment with the minimal
set of libraries/includes that QEMU needs to build, including
but not limited to zlib and glib. How to set this up depends on
what your cross compilation setup is; in this case you'll need to
ask the buildroot folks.

Question for the qemu-devel folks: does anybody have a situation
where they genuinely need to pass --cpu to configure (ie the
autodetection is wrong or insufficient)? [configure does mention
one case, which is when cross-compiling to x86 Darwin and SunOS,
but the latter at least is busted anyway because later on we
do things based on SunOS uname results which there is no way
to override for the cross-compile case.] I'm tempted to suggest
we should drop --cpu entirely...

-- PMM