component/qemu-kvm: Re-enable rbd

rbd functionality is enabled only on machines with supported libc version.

component/qemu-kvm/buildout.cfg

@@ -18,6 +18,7 @@ extends =
   ../xorg/buildout.cfg
   ../zlib/buildout.cfg
   ../glib/buildout.cfg
+  ../ceph/buildout.cfg
 
 [gcc]
 min_version = 7.4
@@ -35,6 +36,7 @@ patch-binary = ${patch:location}/bin/patch
 pre-configure =
   sed -i '/^libmigration\b/s/$/ dependencies: [zlib],/' meson.build
   sed -i 's/\bsnappy,/zlib, \0/' dump/meson.build
+configure-rbd = --enable-rbd
 configure-options =
   --meson=${meson:location}/bin/meson
   --ninja=${ninja:location}/bin/ninja
@@ -55,11 +57,21 @@ configure-options =
   --enable-vnc-png
   --disable-vnc-jpeg
   --disable-werror
+  ${:configure-rbd}
+CFLAGS-rbd = -I${librbd:location}/include/
+LDFLAGS-rbd = -L${librbd:location}/lib -Wl,-rpath=${librbd:location}/lib
+PKG_CONFIG_PATH-rbd = :${librbd:location}/lib/pkgconfig
 environment =
-  CFLAGS=-I${gettext:location}/include -I${libaio:location}/include -I${liburing:location}/include -I${libcap-ng:location}/include
-  LDFLAGS=-L${gettext:location}/lib -L${libaio:location}/lib -L${libcap-ng:location}/lib -Wl,-rpath=${libcap-ng:location}/lib -Wl,-rpath=${glib:location}/lib -Wl,-rpath=${gnutls:location}/lib -Wl,-rpath=${nettle:location}/lib -Wl,-rpath=${pixman:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${gettext:location}/lib -Wl,-rpath=${libpng:location}/lib -Wl,-rpath=${libaio:location}/lib -Wl,-rpath=${liburing:location}/lib -Wl,-rpath=${libcap-ng:location}/lib
+  CFLAGS=${:CFLAGS-rbd} -I${gettext:location}/include -I${libaio:location}/include -I${liburing:location}/include -I${libcap-ng:location}/include
+  LDFLAGS=${:LDFLAGS-rbd} -L${gettext:location}/lib -L${libaio:location}/lib -L${libcap-ng:location}/lib -Wl,-rpath=${libcap-ng:location}/lib -Wl,-rpath=${glib:location}/lib -Wl,-rpath=${gnutls:location}/lib -Wl,-rpath=${nettle:location}/lib -Wl,-rpath=${pixman:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${gettext:location}/lib -Wl,-rpath=${libpng:location}/lib -Wl,-rpath=${libaio:location}/lib -Wl,-rpath=${liburing:location}/lib -Wl,-rpath=${libcap-ng:location}/lib
   PATH=${pkgconfig:location}/bin:${bzip2:location}/bin:%(PATH)s
-  PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${gnutls:location}/lib/pkgconfig:${gnutls:pkg-config-path}:${libpng:location}/lib/pkgconfig:${liburing:location}/lib/pkgconfig:${ncurses:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig:${pixman:location}/lib/pkgconfig
+  PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${gnutls:location}/lib/pkgconfig:${gnutls:pkg-config-path}:${libpng:location}/lib/pkgconfig:${liburing:location}/lib/pkgconfig:${ncurses:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig:${pixman:location}/lib/pkgconfig${:PKG_CONFIG_PATH-rbd}
+
+[qemu:[int(q) for q in platform.libc_ver()[1].split(".")] < [2,25]]
+configure-rbd =
+CFLAGS-rbd =
+LDFLAGS-rbd =
+PKG_CONFIG_PATH-rbd =
 
 [qemu:sys.version_info < (3,6)]
 environment +=