Re: [Qemu-devel] [PATCH] correctly advertise presence of KVM support

[Anthony Liguori <anthony@codemonkey.ws>]

Glauber Costa wrote:
> We can fail in tests to enable kvm, for example,
> if we are compiling to a target different from our host
> platform. However, at that point, KVM support may have been
> already advertised to the user. This is very misleading.
>
> So we first test it, and then advertise KVM support. To do that
> without spliting the summary strings around the whole configure,
> we move everything to the end, where nothing can change anymore
>   

This isn't quite correct.  If you did something like:

configure --target-list='x86_64-softmmu cris-softmmu'

Then even though x86_64-softmmu may have KVM enabled, it's dumb luck 
whether or not you see KVM    yes in the configure output depending on 
which target gets configured first.

I think we need something a bit more sophisticated like output for all 
of the targets with KVM enabled or something like that.

For instance, consider if you did configure 
--target-list='x86_64-softmmu i386-softmmu cris-softmmu'

Regards,

Anthony Liguori

> Signed-off-by: Glauber Costa <glommer@redhat.com>
> ---
>  configure |  102 ++++++++++++++++++++++++++++++------------------------------
>  1 files changed, 51 insertions(+), 51 deletions(-)
>
> diff --git a/configure b/configure
> index 65f0c74..8e11506 100755
> --- a/configure
> +++ b/configure
> @@ -1022,57 +1022,6 @@ else
>    binsuffix="/bin"
>  fi
>  
> -echo "Install prefix    $prefix"
> -echo "BIOS directory    $prefix$datasuffix"
> -echo "binary directory  $prefix$binsuffix"
> -if test "$mingw32" = "no" ; then
> -echo "Manual directory  $prefix$mansuffix"
> -echo "ELF interp prefix $interp_prefix"
> -fi
> -echo "Source path       $source_path"
> -echo "C compiler        $cc"
> -echo "Host C compiler   $host_cc"
> -echo "ARCH_CFLAGS       $ARCH_CFLAGS"
> -echo "make              $make"
> -echo "install           $install"
> -echo "host CPU          $cpu"
> -echo "host big endian   $bigendian"
> -echo "target list       $target_list"
> -echo "gprof enabled     $gprof"
> -echo "sparse enabled    $sparse"
> -echo "profiler          $profiler"
> -echo "static build      $static"
> -echo "-Werror enabled   $werror"
> -if test "$darwin" = "yes" ; then
> -    echo "Cocoa support     $cocoa"
> -fi
> -echo "SDL support       $sdl"
> -if test "$sdl" != "no" ; then
> -    echo "SDL static link   $sdl_static"
> -fi
> -echo "curses support    $curses"
> -echo "mingw32 support   $mingw32"
> -echo "Audio drivers     $audio_drv_list"
> -echo "Extra audio cards $audio_card_list"
> -echo "Mixer emulation   $mixemu"
> -echo "VNC TLS support   $vnc_tls"
> -if test "$vnc_tls" = "yes" ; then
> -    echo "    TLS CFLAGS    $vnc_tls_cflags"
> -    echo "    TLS LIBS      $vnc_tls_libs"
> -fi
> -if test -n "$sparc_cpu"; then
> -    echo "Target Sparc Arch $sparc_cpu"
> -fi
> -echo "kqemu support     $kqemu"
> -echo "brlapi support    $brlapi"
> -echo "Documentation     $build_docs"
> -[ ! -z "$uname_release" ] && \
> -echo "uname -r          $uname_release"
> -echo "NPTL support      $nptl"
> -echo "vde support       $vde"
> -echo "AIO support       $aio"
> -echo "KVM support       $kvm"
> -
>  if test $sdl_too_old = "yes"; then
>  echo "-> Your SDL version is too old - please upgrade to have SDL support"
>  fi
> @@ -1690,4 +1639,55 @@ if test "$source_path_used" = "yes" ; then
>      done
>  fi
>  
> +echo "Install prefix    $prefix"
> +echo "BIOS directory    $prefix$datasuffix"
> +echo "binary directory  $prefix$binsuffix"
> +if test "$mingw32" = "no" ; then
> +echo "Manual directory  $prefix$mansuffix"
> +echo "ELF interp prefix $interp_prefix"
> +fi
> +echo "Source path       $source_path"
> +echo "C compiler        $cc"
> +echo "Host C compiler   $host_cc"
> +echo "ARCH_CFLAGS       $ARCH_CFLAGS"
> +echo "make              $make"
> +echo "install           $install"
> +echo "host CPU          $cpu"
> +echo "host big endian   $bigendian"
> +echo "target list       $target_list"
> +echo "gprof enabled     $gprof"
> +echo "sparse enabled    $sparse"
> +echo "profiler          $profiler"
> +echo "static build      $static"
> +echo "-Werror enabled   $werror"
> +if test "$darwin" = "yes" ; then
> +    echo "Cocoa support     $cocoa"
> +fi
> +echo "SDL support       $sdl"
> +if test "$sdl" != "no" ; then
> +    echo "SDL static link   $sdl_static"
> +fi
> +echo "curses support    $curses"
> +echo "mingw32 support   $mingw32"
> +echo "Audio drivers     $audio_drv_list"
> +echo "Extra audio cards $audio_card_list"
> +echo "Mixer emulation   $mixemu"
> +echo "VNC TLS support   $vnc_tls"
> +if test "$vnc_tls" = "yes" ; then
> +    echo "    TLS CFLAGS    $vnc_tls_cflags"
> +    echo "    TLS LIBS      $vnc_tls_libs"
> +fi
> +if test -n "$sparc_cpu"; then
> +    echo "Target Sparc Arch $sparc_cpu"
> +fi
> +echo "kqemu support     $kqemu"
> +echo "brlapi support    $brlapi"
> +echo "Documentation     $build_docs"
> +[ ! -z "$uname_release" ] && \
> +echo "uname -r          $uname_release"
> +echo "NPTL support      $nptl"
> +echo "vde support       $vde"
> +echo "AIO support       $aio"
> +echo "KVM support       $kvm"
> +
>  rm -f $TMPO $TMPC $TMPE $TMPS $TMPI
>