libiscsi: convert to meson

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

block/meson.build

@@ -60,7 +60,7 @@ block_ss.add(when: 'CONFIG_QED', if_true: files(
 block_ss.add(when: [libxml2, 'CONFIG_PARALLELS'], if_true: files('parallels.c'))
 block_ss.add(when: 'CONFIG_WIN32', if_true: files('file-win32.c', 'win32-aio.c'))
 block_ss.add(when: 'CONFIG_POSIX', if_true: [files('file-posix.c'), coref, iokit])
-block_ss.add(when: 'CONFIG_LIBISCSI', if_true: files('iscsi-opts.c'))
+block_ss.add(when: libiscsi, if_true: files('iscsi-opts.c'))
 block_ss.add(when: 'CONFIG_LINUX', if_true: files('nvme.c'))
 block_ss.add(when: 'CONFIG_REPLICATION', if_true: files('replication.c'))
 block_ss.add(when: 'CONFIG_SHEEPDOG', if_true: files('sheepdog.c'))

configure

@@ -405,7 +405,7 @@ guest_agent_msi="$default_feature"
 vss_win32_sdk="$default_feature"
 win_sdk="no"
 want_tools="$default_feature"
-libiscsi="$default_feature"
+libiscsi="auto"
 libnfs="$default_feature"
 coroutine=""
 coroutine_pool="$default_feature"
@@ -1138,9 +1138,9 @@ for opt do
   ;;
   --enable-spice) spice="yes"
   ;;
-  --disable-libiscsi) libiscsi="no"
+  --disable-libiscsi) libiscsi="disabled"
   ;;
-  --enable-libiscsi) libiscsi="yes"
+  --enable-libiscsi) libiscsi="enabled"
   ;;
   --disable-libnfs) libnfs="no"
   ;;
@@ -4314,21 +4314,6 @@ if compile_prog "" "" ; then
   bswap_h=yes
 fi
 
-##########################################
-# Do we have libiscsi >= 1.9.0
-if test "$libiscsi" != "no" ; then
-  if $pkg_config --atleast-version=1.9.0 libiscsi; then
-    libiscsi="yes"
-    libiscsi_cflags=$($pkg_config --cflags libiscsi)
-    libiscsi_libs=$($pkg_config --libs libiscsi)
-  else
-    if test "$libiscsi" = "yes" ; then
-      feature_not_found "libiscsi" "Install libiscsi >= 1.9.0"
-    fi
-    libiscsi="no"
-  fi
-fi
-
 ##########################################
 # Do we need librt
 # uClibc provides 2 versions of clock_gettime(), one with realtime
@@ -6230,12 +6215,6 @@ if test "$zstd" = "yes" ; then
   echo "ZSTD_LIBS=$zstd_libs" >> $config_host_mak
 fi
 
-if test "$libiscsi" = "yes" ; then
-  echo "CONFIG_LIBISCSI=y" >> $config_host_mak
-  echo "LIBISCSI_CFLAGS=$libiscsi_cflags" >> $config_host_mak
-  echo "LIBISCSI_LIBS=$libiscsi_libs" >> $config_host_mak
-fi
-
 if test "$libnfs" = "yes" ; then
   echo "CONFIG_LIBNFS=y" >> $config_host_mak
   echo "LIBNFS_LIBS=$libnfs_libs" >> $config_host_mak
@@ -6806,7 +6785,7 @@ NINJA=$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=$glusterfs -Dbzip2=$bzip2 \
+        -Dcurl=$curl -Dglusterfs=$glusterfs -Dbzip2=$bzip2 -Dlibiscsi=$libiscsi \
         -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\
         -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
         -Dvhost_user_blk_server=$vhost_user_blk_server \

contrib/vhost-user-scsi/meson.build

@@ -1,4 +1,4 @@
-if 'CONFIG_LIBISCSI' in config_host
+if libiscsi.found()
   executable('vhost-user-scsi', files('vhost-user-scsi.c'),
              dependencies: [qemuutil, libiscsi, vhost_user],
              build_by_default: targetos == 'linux',

meson.build

@@ -376,9 +376,10 @@ if 'CONFIG_PLUGIN' in config_host
   libdl = cc.find_library('dl', required: true)
 endif
 libiscsi = not_found
-if 'CONFIG_LIBISCSI' in config_host
-  libiscsi = declare_dependency(compile_args: config_host['LIBISCSI_CFLAGS'].split(),
-                                link_args: config_host['LIBISCSI_LIBS'].split())
+if not get_option('libiscsi').auto() or have_block
+  libiscsi = dependency('libiscsi', version: '>=1.9.0',
+                         required: get_option('libiscsi'),
+                         method: 'pkg-config', static: enable_static)
 endif
 zstd = not_found
 if 'CONFIG_ZSTD' in config_host
@@ -932,6 +933,7 @@ if glusterfs.found()
   config_host_data.set('CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT', glusterfs_ftruncate_has_stat)
   config_host_data.set('CONFIG_GLUSTERFS_IOCB_HAS_STAT', glusterfs_iocb_has_stat)
 endif
+config_host_data.set('CONFIG_LIBISCSI', libiscsi.found())
 config_host_data.set('CONFIG_SDL', sdl.found())
 config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
@@ -2290,7 +2292,7 @@ summary_info += {'libusb':            config_host.has_key('CONFIG_USB_LIBUSB')}
 summary_info += {'usb net redir':     config_host.has_key('CONFIG_USB_REDIR')}
 summary_info += {'OpenGL support':    config_host.has_key('CONFIG_OPENGL')}
 summary_info += {'OpenGL dmabufs':    config_host.has_key('CONFIG_OPENGL_DMABUF')}
-summary_info += {'libiscsi support':  config_host.has_key('CONFIG_LIBISCSI')}
+summary_info += {'libiscsi support':  libiscsi.found()}
 summary_info += {'libnfs support':    config_host.has_key('CONFIG_LIBNFS')}
 summary_info += {'build guest agent': config_host.has_key('CONFIG_GUEST_AGENT')}
 if targetos == 'windows'

meson_options.txt

@@ -50,6 +50,8 @@ option('curl', type : 'feature', value : 'auto',
        description: 'CURL block device driver')
 option('glusterfs', type : 'feature', value : 'auto',
        description: 'Glusterfs block device driver')
+option('libiscsi', type : 'feature', value : 'auto',
+       description: 'libiscsi userspace initiator')
 option('mpath', type : 'feature', value : 'auto',
        description: 'Multipath persistent reservation passthrough')
 option('iconv', type : 'feature', value : 'auto',