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

[Anthony Liguori <anthony@codemonkey.ws>]

Instead of having an explicit --enable-libfdt, it would be nicer to 
compile probe for it and then provide a --disable-libfdt option.  Then 
it Just Works without a special configure flag.

Regards,

Anthony Liguori

Jerone Young wrote:
> # HG changeset patch
> # User Jerone Young <jyoung5@us.ibm.com>
> # Date 1205507804 18000
> # Branch merge
> # Node ID d96091321011ee86681f00bbaf72337ebc937791
> # Parent  b573d2790e7813337bf26c76a5c773a59592da5d
> Add libfdt support to qemu
>
> This patch adds needed configuration options to compile in libfdt support
> into qemu.
>
> Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
>
> diff --git a/qemu/Makefile.target b/qemu/Makefile.target
> --- a/qemu/Makefile.target
> +++ b/qemu/Makefile.target
> @@ -555,6 +555,11 @@ ifdef CONFIG_VNC_TLS
>  ifdef CONFIG_VNC_TLS
>  CPPFLAGS += $(CONFIG_VNC_TLS_CFLAGS)
>  LIBS += $(CONFIG_VNC_TLS_LIBS)
> +endif
> +
> +ifdef CONFIG_LIBFDT
> +LIBS += -lfdt
> +DEPLIBS += libfdt.a
>  endif
>  
>  # SCSI layer
> diff --git a/qemu/configure b/qemu/configure
> --- a/qemu/configure
> +++ b/qemu/configure
> @@ -112,6 +112,7 @@ uname_release=""
>  uname_release=""
>  curses="yes"
>  cpu_emulation="yes"
> +device_tree_support="no"
>  
>  # OS specific
>  targetos=`uname -s`
> @@ -345,6 +346,8 @@ for opt do
>    ;;
>    --disable-cpu-emulation) cpu_emulation="no"
>    ;;
> +  --enable-libfdt) device_tree_support="yes"
> +  ;;
>    *) echo "ERROR: unknown option $opt"; exit 1
>    ;;
>    esac
> @@ -449,6 +452,7 @@ echo "  --enable-uname-release=R Return 
>  echo "  --enable-uname-release=R Return R for uname -r in usermode emulation"
>  echo "  --sparc_cpu=V            Build qemu for Sparc architecture v7, v8, v8plus, v8plusa, v9"
>  echo "  --disable-cpu-emulation  disables use of qemu cpu emulation code"
> +echo "  --enable-libfdt 	 enable libfdt support for device tree support"
>  echo ""
>  echo "NOTE: The object files are built at the place where configure is launched"
>  exit 1
> @@ -1186,6 +1190,10 @@ elif test "$target_cpu" = "ppcemb" ; the
>    echo "#define TARGET_ARCH \"ppcemb\"" >> $config_h
>    echo "#define TARGET_PPC 1" >> $config_h
>    echo "#define TARGET_PPCEMB 1" >> $config_h
> +  if test "$device_tree_support" = "yes" ; then
> +      echo "#define CONFIG_LIBFDT 1" >> $config_h
> +      echo "CONFIG_LIBFDT=1" >> $config_mak
> +  fi
>    configure_kvm
>  elif test "$target_cpu" = "ppc64" ; then
>    echo "TARGET_ARCH=ppc64" >> $config_mak
>
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