meson: systemd-repart.standalone

Repart is growing into an important tool on its own, and users might
want to install newer versions on systems that have older systemd. Let's
make this easier by providing a standalone binary.

Related to systemd/mkosi#1228.

meson.build

@@ -3706,6 +3706,25 @@ if conf.get('ENABLE_REPART') == 1
                 install : true,
                 install_dir : rootbindir)
         public_programs += exe
+
+        if have_standalone_binaries
+                exe = executable(
+                        'systemd-repart.standalone',
+                        systemd_repart_sources,
+                        include_directories : includes,
+                        c_args : '-DSTANDALONE',
+                        link_with : [libshared_static,
+                                     libbasic,
+                                     libbasic_gcrypt,
+                                     libsystemd_static],
+                        dependencies : [threads,
+                                        libblkid,
+                                        libfdisk,
+                                        libopenssl],
+                        install_rpath : rootpkglibdir,
+                        install : true,
+                        install_dir : rootbindir)
+        endif
 endif
 
 executable(