Re: [kvm-ppc-devel] [PATCH 2 of 7] Add libfdt support to qemu

[Hollis Blanchard <hollisb@us.ibm.com>]

OK, if that's acceptable to the qemu folks, could you put that in the
patch description?

-- 
Hollis Blanchard
IBM Linux Technology Center

On Tue, 2008-03-18 at 16:22 -0500, Jerone Young wrote:
> So this is the code Anthony asked for for probing libfdt. The problem is
> that if you do ./configure <params> at kvm-userpace top directory for
> the first time or after a clean you do not have libfdt.a. When qemu
> configure is run this probe would allways fail. So to check we just
> check for the header. So we compile a very simple program that include
> libfdt.h as the test.
> 
> All the XXX are if we ever do break libfdt out then we can do the proper
> probing for it (and the code for it is ready to be uncommented). 
> 
> 
> On Tue, 2008-03-18 at 16:16 -0500, Hollis Blanchard wrote:
> > On Tue, 2008-03-18 at 15:06 -0500, Jerone Young wrote:
> > > +######################################
> > > +# libfdt probe
> > > +#
> > > +if test -z "$device_tree_support" -a \
> > > +   "$cpu" = "powerpc"; then 
> > > +  device_tree_support="no"
> > > +  cat > $TMPC << EOF
> > > +#include <libfdt.h>
> > > +/* XXX uncomment later when libfdt is built before this test */ 
> > > +//int main(void) { void *fdt; return fdt_create(fdt, 1024); }
> > > +int main (void) {return 0;}
> > > +EOF
> > > +# XXX for now do not try to link to libfdt and just check for header */
> > > +# if $cc $ARCH_CFLAGS $CFLAGS $LDFLAGS -o $TMPE $TMPC -lfdt 2> /dev/null ; then
> > > +  if $cc $ARCH_CFLAGS $CFLAGS $LDFLAGS -o $TMPE $TMPC 2> /dev/null; then 
> > > +   device_tree_support="yes"
> > > +  else
> > > +    echo
> > > +    echo "Error: Could not find libfdt"
> > > +    echo "Make sure to have the libfdt libs and headers installed."
> > > +    echo
> > > +    exit 1
> > > +  fi
> > > +fi
> > 
> > What is the problem here? Should you describe it in the patch
> > description? Did you mean to fix this before committing?
> > 
> 
> 
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