--- src/systemd/src/basic/process-util.c.orig	2018-03-20 23:12:35.698715891 +0100
+++ src/systemd/src/basic/process-util.c	2018-03-20 23:17:24.114733986 +0100
@@ -36,6 +36,9 @@
 #include <sys/wait.h>
 #include <syslog.h>
 #include <unistd.h>
+#ifndef __GLIBC__
+#include <pthread.h>
+#endif
 #if 0 /* NM_IGNORED */
 #if HAVE_VALGRIND_VALGRIND_H
 #include <valgrind/valgrind.h>
@@ -1015,11 +1018,13 @@ static void reset_cached_pid(void) {
         cached_pid = CACHED_PID_UNSET;
 }
 
+#ifdef __GLIBC__
 /* We use glibc __register_atfork() + __dso_handle directly here, as they are not included in the glibc
  * headers. __register_atfork() is mostly equivalent to pthread_atfork(), but doesn't require us to link against
  * libpthread, as it is part of glibc anyway. */
 extern int __register_atfork(void (*prepare) (void), void (*parent) (void), void (*child) (void), void * __dso_handle);
 extern void* __dso_handle __attribute__ ((__weak__));
+#endif
 
 pid_t getpid_cached(void) {
         pid_t current_value;
@@ -1042,7 +1047,11 @@ pid_t getpid_cached(void) {
 
                 new_pid = getpid();
 
+#ifdef __GLIBC__
                 if (__register_atfork(NULL, NULL, reset_cached_pid, __dso_handle) != 0) {
+#else
+                if (pthread_atfork(NULL, NULL, reset_cached_pid) != 0) {
+#endif
                         /* OOM? Let's try again later */
                         cached_pid = CACHED_PID_UNSET;
                         return new_pid;