Merge pull request #16112 from poettering/nss-systemd-block-fix

rework nss-systemd recursion lock

src/basic/dlfcn-util.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <dlfcn.h>
+
+#include "macro.h"
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(void*, dlclose);

src/basic/meson.build

@@ -39,6 +39,7 @@ basic_sources = files('''
         device-nodes.h
         dirent-util.c
         dirent-util.h
+        dlfcn-util.h
         efivars.c
         efivars.h
         env-file.c
@@ -328,7 +329,8 @@ libbasic = static_library(
                         threads,
                         libcap,
                         libselinux,
-                        libm],
+                        libm,
+                        libdl],
         c_args : ['-fvisibility=default'],
         install : false)