--- a/src/systemd/src/basic/stdio-util.h
+++ b/src/systemd/src/basic/stdio-util.h
@@ -19,7 +19,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#if defined(__GLIBC__)
 #include <printf.h>
+#endif
 #include <stdarg.h>
 #include <stdio.h>
 #include <sys/types.h>
--- a/src/systemd/src/basic/util.h
+++ b/src/systemd/src/basic/util.h
@@ -46,6 +46,11 @@
 #include "missing.h"
 #include "time-util.h"
 
+#if !defined(__GLIBC__)
+typedef int (*__compar_fn_t) (const void*, const void*);
+typedef __compar_fn_t comparison_fn_t;
+#endif
+
 size_t page_size(void) _pure_;
 #define PAGE_ALIGN(l) ALIGN_TO((l), page_size())
 
--- a/src/systemd/src/basic/parse-util.c
+++ b/src/systemd/src/basic/parse-util.c
@@ -25,7 +25,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#if defined(__GLIBC__)
 #include <xlocale.h>
+#else
+#include <locale.h>
+#endif
 
 #include "alloc-util.h"
 #include "extract-word.h"
--- a/src/systemd/sd-adapt/nm-sd-adapt.h
+++ b/src/systemd/sd-adapt/nm-sd-adapt.h
@@ -119,7 +119,7 @@
 #  ifdef HAVE___SECURE_GETENV
 #    define secure_getenv __secure_getenv
 #  else
-#    error neither secure_getenv nor __secure_getenv is available
+#    define secure_getenv getenv
 #  endif
 #endif
 
--- a/src/systemd/src/systemd/sd-event.h
+++ b/src/systemd/src/systemd/sd-event.h
@@ -69,11 +69,7 @@
 typedef int (*sd_event_io_handler_t)(sd_event_source *s, int fd, uint32_t revents, void *userdata);
 typedef int (*sd_event_time_handler_t)(sd_event_source *s, uint64_t usec, void *userdata);
 typedef int (*sd_event_signal_handler_t)(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata);
-#if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
 typedef int (*sd_event_child_handler_t)(sd_event_source *s, const siginfo_t *si, void *userdata);
-#else
-typedef void* sd_event_child_handler_t;
-#endif
 
 int sd_event_default(sd_event **e);