Hi

On Thu, Dec 17, 2020 at 1:40 PM Paolo Bonzini <pbonzini@redhat.com> wrote:

> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  configure         | 31 ++++---------------------------
>  meson.build       | 18 +++++++++++++++---
>  meson_options.txt |  2 ++
>  3 files changed, 21 insertions(+), 30 deletions(-)
>
> diff --git a/configure b/configure
> index 5529ac4b32..082ac3bf35 100755
> --- a/configure
> +++ b/configure
> @@ -396,7 +396,7 @@ avx2_opt="$default_feature"
>  capstone="auto"
>  lzo="$default_feature"
>  snappy="$default_feature"
> -bzip2="$default_feature"
> +bzip2="auto"
>  lzfse="$default_feature"
>  zstd="$default_feature"
>  guest_agent="$default_feature"
> @@ -1320,9 +1320,9 @@ for opt do
>    ;;
>    --enable-snappy) snappy="yes"
>    ;;
> -  --disable-bzip2) bzip2="no"
> +  --disable-bzip2) bzip2="disabled"
>    ;;
> -  --enable-bzip2) bzip2="yes"
> +  --enable-bzip2) bzip2="enabled"
>    ;;
>    --enable-lzfse) lzfse="yes"
>    ;;
> @@ -2496,24 +2496,6 @@ EOF
>      fi
>  fi
>
> -##########################################
> -# bzip2 check
> -
> -if test "$bzip2" != "no" ; then
> -    cat > $TMPC << EOF
> -#include <bzlib.h>
> -int main(void) { BZ2_bzlibVersion(); return 0; }
> -EOF
> -    if compile_prog "" "-lbz2" ; then
> -        bzip2="yes"
> -    else
> -        if test "$bzip2" = "yes"; then
> -            feature_not_found "libbzip2" "Install libbzip2 devel"
> -        fi
> -        bzip2="no"
> -    fi
> -fi
> -
>  ##########################################
>  # lzfse check
>
> @@ -6238,11 +6220,6 @@ if test "$snappy" = "yes" ; then
>    echo "SNAPPY_LIBS=$snappy_libs" >> $config_host_mak
>  fi
>
> -if test "$bzip2" = "yes" ; then
> -  echo "CONFIG_BZIP2=y" >> $config_host_mak
> -  echo "BZIP2_LIBS=-lbz2" >> $config_host_mak
> -fi
> -
>  if test "$lzfse" = "yes" ; then
>    echo "CONFIG_LZFSE=y" >> $config_host_mak
>    echo "LZFSE_LIBS=-llzfse" >> $config_host_mak
> @@ -6825,7 +6802,7 @@ NINJA=$ninja $meson setup \
>          -Dvnc=$vnc -Dvnc_sasl=$vnc_sasl -Dvnc_jpeg=$vnc_jpeg
> -Dvnc_png=$vnc_png \
>          -Dgettext=$gettext -Dxkbcommon=$xkbcommon -Du2f=$u2f
> -Dvirtiofsd=$virtiofsd \
>          -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt -Dbrlapi=$brlapi \
> -        -Dcurl=$curl -Dglusterfs=$glusterfs \
> +        -Dcurl=$curl -Dglusterfs=$glusterfs -Dbzip2=$bzip2 \
>          -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\
>          -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
>          -Dvhost_user_blk_server=$vhost_user_blk_server \
> diff --git a/meson.build b/meson.build
> index 409b958a7f..9ba8eecf37 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -654,8 +654,20 @@ if 'CONFIG_LIBSSH' in config_host
>                                link_args:
> config_host['LIBSSH_LIBS'].split())
>  endif
>  libbzip2 = not_found
> -if 'CONFIG_BZIP2' in config_host
> -  libbzip2 = declare_dependency(link_args:
> config_host['BZIP2_LIBS'].split())
> +if not get_option('bzip2').auto() or have_block
> +  libbzip2 = cc.find_library('bz2', has_headers: ['bzlib.h'],
> +                             required: get_option('bzip2'),
> +                             static: enable_static)
> +  if libbzip2.found() and not cc.links('''
> +     #include <bzlib.h>
> +     int main(void) { BZ2_bzlibVersion(); return 0; }''', dependencies:
> libbzip2)
> +    libbzip2 = not_found
> +    if get_option('bzip2').enabled()
> +      error('could not link libbzip2')
> +    else
> +      warning('could not link libbzip2, disabling')
> +    endif
>

sigh, they don't have pkg-config yet... oh well, the diff stat is still
looking good

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

+  endif
>  endif
>  liblzfse = not_found
>  if 'CONFIG_LZFSE' in config_host
> @@ -2298,7 +2310,7 @@ 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':       config_host.has_key('CONFIG_LZO')}
>  summary_info += {'snappy support':
> config_host.has_key('CONFIG_SNAPPY')}
> -summary_info += {'bzip2 support':     config_host.has_key('CONFIG_BZIP2')}
> +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')}
>  summary_info += {'NUMA host support': config_host.has_key('CONFIG_NUMA')}
> diff --git a/meson_options.txt b/meson_options.txt
> index b5d84bb88b..fd16f3b399 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -42,6 +42,8 @@ option('cfi_debug', type: 'boolean', value: 'false',
>
>  option('brlapi', type : 'feature', value : 'auto',
>         description: 'brlapi character device driver')
> +option('bzip2', type : 'feature', value : 'auto',
> +       description: 'bzip2 support for DMG images')
>  option('cocoa', type : 'feature', value : 'auto',
>         description: 'Cocoa user interface (macOS only)')
>  option('curl', type : 'feature', value : 'auto',
> --
> 2.29.2
>
>
>