Re: [Qemu-devel] [PATCH v6 05/11] dump: add support for lzo/snappy

[Laszlo Ersek <lersek@redhat.com>]

On 01/05/14 08:27, Qiao Nuohan wrote:
> kdump-compressed format supports three compression format, zlib/lzo/snappy.
> Currently, only zlib is available. This patch is used to support lzo/snappy.
> '--enable-lzo/--enable-snappy' is needed to be specified with configure to make
> lzo/snappy available for qemu
> 
> Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
> ---
>  configure |   50 ++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 50 insertions(+), 0 deletions(-)
> 
> diff --git a/configure b/configure
> index edfea95..b7a28b7 100755
> --- a/configure
> +++ b/configure
> @@ -245,6 +245,8 @@ libusb=""
>  usb_redir=""
>  glx=""
>  zlib="yes"
> +lzo="no"
> +snappy="no"
>  guest_agent=""
>  guest_agent_with_vss="no"
>  vss_win32_sdk=""
> @@ -947,6 +949,10 @@ for opt do
>    ;;
>    --disable-zlib-test) zlib="no"
>    ;;
> +  --enable-lzo) lzo="yes"
> +  ;;
> +  --enable-snappy) snappy="yes"
> +  ;;
>    --enable-guest-agent) guest_agent="yes"
>    ;;
>    --disable-guest-agent) guest_agent="no"
> @@ -1538,6 +1544,42 @@ fi
>  libs_softmmu="$libs_softmmu -lz"
>  
>  ##########################################
> +# lzo check
> +
> +if test "$lzo" != "no" ; then
> +    cat > $TMPC << EOF
> +#include <lzo/lzo1x.h>
> +int main(void) { lzo_version(); return 0; }
> +EOF
> +    if compile_prog "" "-llzo2" ; then
> +        :
> +    else
> +        error_exit "lzo check failed" \
> +            "Make sure to have the lzo libs and headers installed."
> +    fi
> +
> +    libs_softmmu="$libs_softmmu -llzo2"
> +fi
> +
> +##########################################
> +# snappy check
> +
> +if test "$snappy" != "no" ; then
> +    cat > $TMPC << EOF
> +#include <snappy-c.h>
> +int main(void) { snappy_max_compressed_length(4096); return 0; }
> +EOF
> +    if compile_prog "" "-lsnappy" ; then
> +        :
> +    else
> +        error_exit "snappy check failed" \
> +            "Make sure to have the snappy libs and headers installed."
> +    fi
> +
> +    libs_softmmu="$libs_softmmu -lsnappy"
> +fi
> +
> +##########################################
>  # libseccomp check
>  
>  if test "$seccomp" != "no" ; then
> @@ -4135,6 +4177,14 @@ if test "$glx" = "yes" ; then
>    echo "GLX_LIBS=$glx_libs" >> $config_host_mak
>  fi
>  
> +if test "$lzo" = "yes" ; then
> +  echo "CONFIG_LZO=y" >> $config_host_mak
> +fi
> +
> +if test "$snappy" = "yes" ; then
> +  echo "CONFIG_SNAPPY=y" >> $config_host_mak
> +fi
> +
>  if test "$libiscsi" = "yes" ; then
>    echo "CONFIG_LIBISCSI=y" >> $config_host_mak
>  fi
> 

You could have displayed the lzo / snappy settings along with the other
settings in the "big echo block". But it's not too important; if you
want you can add it later.

Reviewed-by: Laszlo Ersek <lersek@redhat.com>