diff --git a/include/haproxy/thread.h b/include/haproxy/thread.h
index 1881fa98d..7598327d4 100644
--- a/include/haproxy/thread.h
+++ b/include/haproxy/thread.h
@@ -23,12 +23,6 @@
 #ifndef _HAPROXY_THREAD_H
 #define _HAPROXY_THREAD_H
 
-#include <signal.h>
-#include <unistd.h>
-#ifdef _POSIX_PRIORITY_SCHEDULING
-#include <sched.h>
-#endif
-
 #include <haproxy/api.h>
 #include <haproxy/thread-t.h>
 #include <haproxy/tinfo.h>
@@ -46,6 +40,9 @@
 
 /* Generic exports */
 int parse_nbthread(const char *arg, char **err);
+void ha_tkill(unsigned int thr, int sig);
+void ha_tkillall(int sig);
+void ha_thread_relax(void);
 extern int thread_cpus_enabled_at_boot;
 
 
@@ -95,25 +92,6 @@ static inline void ha_set_tid(unsigned int tid)
 	ti = &ha_thread_info[tid];
 }
 
-static inline void ha_thread_relax(void)
-{
-#ifdef _POSIX_PRIORITY_SCHEDULING
-	sched_yield();
-#endif
-}
-
-/* send signal <sig> to thread <thr> */
-static inline void ha_tkill(unsigned int thr, int sig)
-{
-	raise(sig);
-}
-
-/* send signal <sig> to all threads */
-static inline void ha_tkillall(int sig)
-{
-	raise(sig);
-}
-
 static inline void thread_idle_now()
 {
 }
@@ -179,8 +157,6 @@ void thread_isolate(void);
 void thread_isolate_full(void);
 void thread_release(void);
 void thread_sync_release(void);
-void ha_tkill(unsigned int thr, int sig);
-void ha_tkillall(int sig);
 void ha_spin_init(HA_SPINLOCK_T *l);
 void ha_rwlock_init(HA_RWLOCK_T *l);
 void setup_extra_threads(void *(*handler)(void *));
@@ -232,15 +208,6 @@ static inline void ha_set_tid(unsigned int data)
 	ti      = &ha_thread_info[tid];
 }
 
-static inline void ha_thread_relax(void)
-{
-#ifdef _POSIX_PRIORITY_SCHEDULING
-	sched_yield();
-#else
-	pl_cpu_relax();
-#endif
-}
-
 /* Marks the thread as idle, which means that not only it's not doing anything
  * dangerous, but in addition it has not started anything sensitive either.
  * This essentially means that the thread currently is in the poller, thus
diff --git a/src/thread.c b/src/thread.c
index 0858acad8..a3400010b 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -15,6 +15,12 @@
 #include <stdlib.h>
 #include <fcntl.h>
 
+#include <signal.h>
+#include <unistd.h>
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#include <sched.h>
+#endif
+
 #ifdef USE_THREAD
 #  include <pthread.h>
 #endif
@@ -312,6 +318,15 @@ void ha_tkillall(int sig)
 	raise(sig);
 }
 
+void ha_thread_relax(void)
+{
+#ifdef _POSIX_PRIORITY_SCHEDULING
+	sched_yield();
+#else
+	pl_cpu_relax();
+#endif
+}
+
 /* these calls are used as callbacks at init time when debugging is on */
 void ha_spin_init(HA_SPINLOCK_T *l)
 {
@@ -956,6 +971,25 @@ static void __thread_init(void)
 
 #else
 
+/* send signal <sig> to thread <thr> (send to process in fact) */
+void ha_tkill(unsigned int thr, int sig)
+{
+	raise(sig);
+}
+
+/* send signal <sig> to all threads (send to process in fact) */
+void ha_tkillall(int sig)
+{
+	raise(sig);
+}
+
+void ha_thread_relax(void)
+{
+#ifdef _POSIX_PRIORITY_SCHEDULING
+	sched_yield();
+#endif
+}
+
 REGISTER_BUILD_OPTS("Built without multi-threading support (USE_THREAD not set).");
 
 #endif // USE_THREAD