diff --git a/meson.build b/meson.build
index 755ec7ce..108565e2 100644
--- a/meson.build
+++ b/meson.build
@@ -284,18 +284,34 @@ if not compilers['cpp'].has_header('pthread.h') or not compilers['cpp'].links(''
         global_args += '-DMKXPZ_NO_PTHREAD_H_MUTEX'
     endif
     global_args += '-DMKXPZ_NO_SEMAPHORE_H'
-elif not compilers['cpp'].has_header('semaphore.h') or not compilers['cpp'].links('''
-    #include <semaphore.h>
-    int main(void) {
-        sem_t sem;
-        sem_init(&sem, 0, 0);
-        sem_post(&sem);
-        sem_wait(&sem);
-        sem_destroy(&sem);
-        return 0;
-    }
-''', args: link_test_args, name: 'semaphore.h sanity check')
-    global_args += '-DMKXPZ_NO_SEMAPHORE_H'
+else
+    if host_system == 'darwin' or not compilers['cpp'].has_header('semaphore.h') or not compilers['cpp'].links('''
+        #include <semaphore.h>
+        int main(void) {
+            sem_t sem;
+            sem_init(&sem, 0, 0);
+            sem_post(&sem);
+            sem_wait(&sem);
+            sem_destroy(&sem);
+            return 0;
+        }
+    ''', args: link_test_args, name: 'semaphore.h sanity check')
+        global_args += '-DMKXPZ_NO_SEMAPHORE_H'
+    endif
+
+    if not compilers['cpp'].has_header('dispatch/dispatch.h') or not compilers['cpp'].links('''
+        #include <dispatch/dispatch.h>
+        int main(void) {
+            dispatch_semaphore_t sem;
+            sem = dispatch_semaphore_create(0);
+            dispatch_semaphore_signal(sem);
+            dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
+            dispatch_release(sem);
+            return 0;
+        }
+    ''', args: link_test_args, name: 'dispatch/dispatch.h sanity check')
+        global_args += '-DMKXPZ_NO_DISPATCH_DISPATCH_H'
+    endif
 endif
 
 if not compilers['cpp'].has_header('pthread.h') or not compilers['cpp'].links('''
diff --git a/src/mkxp-polyfill.cpp b/src/mkxp-polyfill.cpp
index 8af3831a..3af0b94b 100644
--- a/src/mkxp-polyfill.cpp
+++ b/src/mkxp-polyfill.cpp
@@ -192,7 +192,7 @@ static void ctr_thread_launcher(void *data) {
 }
 #endif
 
-#if defined(MKXPZ_NO_SEMAPHORE_H) && !defined(MKXPZ_NO_PTHREAD_H_MUTEX)
+#if defined(MKXPZ_NO_SEMAPHORE_H) && defined(MKXPZ_NO_DISPATCH_DISPATCH_H) && !defined(MKXPZ_NO_PTHREAD_H_MUTEX)
 struct mkxp_sem_private {
     unsigned int value;
     mkxp_mutex_t mutex;
@@ -380,6 +380,8 @@ extern "C" int mkxp_cond_wait(mkxp_cond_t *cond, mkxp_mutex_t *mutex) {
 extern "C" int mkxp_sem_init(mkxp_sem_t *sem, unsigned int value) {
 #ifndef MKXPZ_NO_SEMAPHORE_H
     return sem_init(sem, 0, value);
+#elif !defined(MKXPZ_NO_DISPATCH_DISPATCH_H)
+    return (*sem = dispatch_semaphore_create(value)) == nullptr ? -1 : 0;
 #elif !defined(MKXPZ_NO_PTHREAD_H_MUTEX)
     *sem = (void *)new mkxp_sem_private;
     int mutex_init_result = mkxp_mutex_init(&((struct mkxp_sem_private *)*sem)->mutex, false);
@@ -402,6 +404,9 @@ extern "C" int mkxp_sem_init(mkxp_sem_t *sem, unsigned int value) {
 extern "C" int mkxp_sem_destroy(mkxp_sem_t *sem) {
 #ifndef MKXPZ_NO_SEMAPHORE_H
     return sem_destroy(sem);
+#elif !defined(MKXPZ_NO_DISPATCH_DISPATCH_H)
+    dispatch_release(*sem);
+    return 0;
 #elif !defined(MKXPZ_NO_PTHREAD_H_MUTEX)
     mkxp_cond_destroy(&((struct mkxp_sem_private *)*sem)->cond);
     mkxp_mutex_destroy(&((struct mkxp_sem_private *)*sem)->mutex);
@@ -415,6 +420,9 @@ extern "C" int mkxp_sem_destroy(mkxp_sem_t *sem) {
 extern "C" int mkxp_sem_post(mkxp_sem_t *sem) {
 #ifndef MKXPZ_NO_SEMAPHORE_H
     return sem_post(sem);
+#elif !defined(MKXPZ_NO_DISPATCH_DISPATCH_H)
+    dispatch_semaphore_signal(*sem);
+    return 0;
 #elif !defined(MKXPZ_NO_PTHREAD_H_MUTEX)
     while (mkxp_mutex_lock(&((struct mkxp_sem_private *)*sem)->mutex)) {}
     ++((struct mkxp_sem_private *)*sem)->value;
@@ -430,6 +438,8 @@ extern "C" int mkxp_sem_post(mkxp_sem_t *sem) {
 extern "C" int mkxp_sem_wait(mkxp_sem_t *sem) {
 #ifndef MKXPZ_NO_SEMAPHORE_H
     return sem_wait(sem);
+#elif !defined(MKXPZ_NO_DISPATCH_DISPATCH_H)
+    return dispatch_semaphore_wait(*sem, DISPATCH_TIME_FOREVER);
 #elif !defined(MKXPZ_NO_PTHREAD_H_MUTEX)
     while (mkxp_mutex_lock(&((struct mkxp_sem_private *)*sem)->mutex)) {}
     for (;;) {
diff --git a/src/mkxp-polyfill.h b/src/mkxp-polyfill.h
index f0063f9d..832b7b6e 100644
--- a/src/mkxp-polyfill.h
+++ b/src/mkxp-polyfill.h
@@ -30,6 +30,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#if defined(__APPLE__) && !defined(MKXPZ_NO_SEMAPHORE_H)
+#  define MKXPZ_NO_SEMAPHORE_H
+#endif
+
 #if !defined(MKXPZ_NO_PTHREAD_H_MUTEX) || !defined(MKXPZ_NO_PTHREAD_H_THREAD)
 #  include <pthread.h>
 #endif
@@ -38,6 +42,10 @@
 #  include <semaphore.h>
 #endif
 
+#ifndef MKXPZ_NO_DISPATCH_DISPATCH_H
+#  include <dispatch/dispatch.h>
+#endif
+
 #if !defined(__cplusplus) || defined(MKXPZ_NO_EXCEPTIONS)
 #  define MKXPZ_THROW(...) do { fprintf(stderr, "Exception thrown: %s\n", (__VA_ARGS__).what()); fflush(stderr); abort(); } while (0)
 #  define MKXPZ_RETHROW do { } while (0)
@@ -76,6 +84,8 @@ typedef bool mkxp_cond_t;
 
 #ifndef MKXPZ_NO_SEMAPHORE_H
 typedef sem_t mkxp_sem_t;
+#elif !defined(MKXPZ_NO_DISPATCH_DISPATCH_H)
+typedef dispatch_semaphore_t mkxp_sem_t;
 #elif !defined(MKXPZ_NO_PTHREAD_H_MUTEX)
 typedef void *mkxp_sem_t;
 #else