Re: [PATCH 11/18] snappy: convert to meson

["Marc-André Lureau" <marcandre.lureau@redhat.com>]

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On Thu, Dec 17, 2020 at 1:41 PM Paolo Bonzini <pbonzini@redhat.com> wrote:

> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>


> ---
>  configure         | 32 ++++----------------------------
>  meson.build       | 19 +++++++++++++++----
>  meson_options.txt |  2 ++
>  3 files changed, 21 insertions(+), 32 deletions(-)
>
> diff --git a/configure b/configure
> index f52f04d0e3..aee27d9cdd 100755
> --- a/configure
> +++ b/configure
> @@ -395,7 +395,7 @@ cpuid_h="no"
>  avx2_opt="$default_feature"
>  capstone="auto"
>  lzo="auto"
> -snappy="$default_feature"
> +snappy="auto"
>  bzip2="auto"
>  lzfse="$default_feature"
>  zstd="$default_feature"
> @@ -1316,9 +1316,9 @@ for opt do
>    ;;
>    --enable-lzo) lzo="enabled"
>    ;;
> -  --disable-snappy) snappy="no"
> +  --disable-snappy) snappy="disabled"
>    ;;
> -  --enable-snappy) snappy="yes"
> +  --enable-snappy) snappy="enabled"
>    ;;
>    --disable-bzip2) bzip2="disabled"
>    ;;
> @@ -2458,25 +2458,6 @@ EOF
>    fi
>  fi
>
> -##########################################
> -# snappy check
> -
> -if test "$snappy" != "no" ; then
> -    cat > $TMPC << EOF
> -#include <snappy-c.h>
> -int main(void) { snappy_max_compressed_length(4096); return 0; }
> -EOF
> -    if compile_prog "" "-lsnappy" ; then
> -        snappy_libs='-lsnappy'
> -        snappy="yes"
> -    else
> -        if test "$snappy" = "yes"; then
> -            feature_not_found "libsnappy" "Install libsnappy devel"
> -        fi
> -        snappy="no"
> -    fi
> -fi
> -
>  ##########################################
>  # lzfse check
>
> @@ -6107,11 +6088,6 @@ if test "$avx512f_opt" = "yes" ; then
>    echo "CONFIG_AVX512F_OPT=y" >> $config_host_mak
>  fi
>
> -if test "$snappy" = "yes" ; then
> -  echo "CONFIG_SNAPPY=y" >> $config_host_mak
> -  echo "SNAPPY_LIBS=$snappy_libs" >> $config_host_mak
> -fi
> -
>  if test "$lzfse" = "yes" ; then
>    echo "CONFIG_LZFSE=y" >> $config_host_mak
>    echo "LZFSE_LIBS=-llzfse" >> $config_host_mak
> @@ -6675,7 +6651,7 @@ NINJA=$ninja $meson setup \
>          -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt -Dbrlapi=$brlapi \
>          -Dcurl=$curl -Dglusterfs=$glusterfs -Dbzip2=$bzip2
> -Dlibiscsi=$libiscsi \
>          -Dlibnfs=$libnfs -Diconv=$iconv -Dcurses=$curses
> -Dlibudev=$libudev\
> -        -Dlibssh=$libssh -Drbd=$rbd -Dlzo=$lzo \
> +        -Dlibssh=$libssh -Drbd=$rbd -Dlzo=$lzo -Dsnappy=$snappy \
>          -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
>          -Dvhost_user_blk_server=$vhost_user_blk_server \
>          -Dfuse=$fuse -Dfuse_lseek=$fuse_lseek \
> diff --git a/meson.build b/meson.build
> index 0310d6d89a..9f6ea65626 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -749,9 +749,19 @@ if get_option('vnc').enabled()
>                                compile_args: '-DSTRUCT_IOVEC_DEFINED')
>    endif
>  endif
> -snappy = not_found
> -if 'CONFIG_SNAPPY' in config_host
> -  snappy = declare_dependency(link_args:
> config_host['SNAPPY_LIBS'].split())
> +
> +snappy = cc.find_library('snappy', has_headers: ['snappy-c.h'],
> +                      required: get_option('snappy'),
> +                      static: enable_static)
> +if snappy.found() and not cc.links('''
> +   #include <snappy-c.h>
> +   int main(void) { snappy_max_compressed_length(4096); return 0; }''',
> dependencies: snappy)
> +  snappy = not_found
> +  if get_option('snappy').enabled()
> +    error('could not link libsnappy')
> +  else
> +    warning('could not link libsnappy, disabling')
> +  endif
>  endif
>

fwiw, .pc file is provided since 1.1.4, released about 4y ago (in debian
oldstable, but not centos7..)


>  lzo = cc.find_library('lzo2', has_headers: ['lzo/lzo1x.h'],
> @@ -971,6 +981,7 @@ config_host_data.set('HAVE_LIBSSH_0_8',
> have_libssh_0_8)
>  config_host_data.set('CONFIG_RBD', rbd.found())
>  config_host_data.set('CONFIG_SDL', sdl.found())
>  config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
> +config_host_data.set('CONFIG_SNAPPY', snappy.found())
>  config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER',
> have_vhost_user_blk_server)
>  config_host_data.set('CONFIG_VNC', vnc.found())
>  config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
> @@ -2352,7 +2363,7 @@ summary_info += {'libssh support':    libssh.found()}
>  summary_info += {'QOM debugging':
>  config_host.has_key('CONFIG_QOM_CAST_DEBUG')}
>  summary_info += {'Live block migration':
> config_host.has_key('CONFIG_LIVE_BLOCK_MIGRATION')}
>  summary_info += {'lzo support':       lzo.found()}
> -summary_info += {'snappy support':
> config_host.has_key('CONFIG_SNAPPY')}
> +summary_info += {'snappy support':    snappy.found()}
>  summary_info += {'bzip2 support':     libbzip2.found()}
>  summary_info += {'lzfse support':     config_host.has_key('CONFIG_LZFSE')}
>  summary_info += {'zstd support':      config_host.has_key('CONFIG_ZSTD')}
> diff --git a/meson_options.txt b/meson_options.txt
> index 00a5ec55bd..e2b7e23887 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -72,6 +72,8 @@ option('sdl', type : 'feature', value : 'auto',
>         description: 'SDL user interface')
>  option('sdl_image', type : 'feature', value : 'auto',
>         description: 'SDL Image support for icons')
> +option('snappy', type : 'feature', value : 'auto',
> +       description: 'snappy compression support')
>  option('u2f', type : 'feature', value : 'auto',
>         description: 'U2F emulation support')
>  option('vnc', type : 'feature', value : 'enabled',
> --
> 2.29.2
>
>
>

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