diff --git a/ggml/src/ggml.c b/ggml/src/ggml.c
index 08a90ce..212be9f 100644
--- a/ggml/src/ggml.c
+++ b/ggml/src/ggml.c
@@ -19541,7 +19541,8 @@ static bool ggml_thread_apply_priority(int32_t prio) {
     return true;
 }
 
-#else // posix?
+#elif defined(__gnu_linux__)
+// TODO: this may not work on BSD, to be verified
 
 static bool ggml_thread_apply_affinity(const bool * mask) {
     cpu_set_t cpuset;
@@ -19596,6 +19597,18 @@ static bool ggml_thread_apply_priority(int32_t prio) {
     return true;
 }
 
+#else // unsupported platforms
+
+static bool ggml_thread_apply_affinity(const bool * mask) {
+    UNUSED(mask);
+    return true;
+}
+
+static bool ggml_thread_apply_priority(int32_t prio) {
+    UNUSED(prio);
+    return true;
+}
+
 #endif
 
 static bool ggml_thread_cpumask_is_valid(const bool * mask) {