meson: Detect libfuse

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20201027190600.192171-2-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

configure

@@ -449,6 +449,7 @@ meson=""
 ninja=""
 skip_meson=no
 gettext=""
+fuse="auto"
 
 bogus_os="no"
 malloc_trim="auto"
@@ -1525,6 +1526,10 @@ for opt do
   ;;
   --disable-libdaxctl) libdaxctl=no
   ;;
+  --enable-fuse) fuse="enabled"
+  ;;
+  --disable-fuse) fuse="disabled"
+  ;;
   *)
       echo "ERROR: unknown option $opt"
       echo "Try '$0 --help' for more information"
@@ -1850,6 +1855,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   xkbcommon       xkbcommon support
   rng-none        dummy RNG, avoid using /dev/(u)random and getrandom()
   libdaxctl       libdaxctl support
+  fuse            FUSE block device export
 
 NOTE: The object files are built at the place where configure is launched
 EOF
@@ -7014,6 +7020,7 @@ NINJA=$ninja $meson setup \
         -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\
         -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
         -Dvhost_user_blk_server=$vhost_user_blk_server \
+        -Dfuse=$fuse \
         $cross_arg \
         "$PWD" "$source_path"
 

meson.build

@@ -773,6 +773,10 @@ elif get_option('vhost_user_blk_server').disabled() or not have_system
     have_vhost_user_blk_server = false
 endif
 
+fuse = dependency('fuse3', required: get_option('fuse'),
+                  version: '>=3.1', method: 'pkg-config',
+                  static: enable_static)
+
 #################
 # config-host.h #
 #################
@@ -807,6 +811,7 @@ config_host_data.set('CONFIG_KEYUTILS', keyutils.found())
 config_host_data.set('CONFIG_GETTID', has_gettid)
 config_host_data.set('CONFIG_MALLOC_TRIM', has_malloc_trim)
 config_host_data.set('CONFIG_STATX', has_statx)
+config_host_data.set('CONFIG_FUSE', fuse.found())
 config_host_data.set('QEMU_VERSION', '"@0@"'.format(meson.project_version()))
 config_host_data.set('QEMU_VERSION_MAJOR', meson.project_version().split('.')[0])
 config_host_data.set('QEMU_VERSION_MINOR', meson.project_version().split('.')[1])
@@ -2208,6 +2213,7 @@ endif
 summary_info += {'thread sanitizer':  config_host.has_key('CONFIG_TSAN')}
 summary_info += {'rng-none':          config_host.has_key('CONFIG_RNG_NONE')}
 summary_info += {'Linux keyring':     config_host.has_key('CONFIG_SECRET_KEYRING')}
+summary_info += {'FUSE exports':      fuse.found()}
 summary(summary_info, bool_yn: true)
 
 if not supported_cpus.contains(cpu)

meson_options.txt

@@ -66,6 +66,8 @@ option('virtiofsd', type: 'feature', value: 'auto',
        description: 'build virtiofs daemon (virtiofsd)')
 option('vhost_user_blk_server', type: 'feature', value: 'auto',
        description: 'build vhost-user-blk server')
+option('fuse', type: 'feature', value: 'auto',
+       description: 'FUSE block device export')
 
 option('capstone', type: 'combo', value: 'auto',
        choices: ['disabled', 'enabled', 'auto', 'system', 'internal'],