diff -ru php-8.3.4.orig/Zend/zend_signal.h php-8.3.4/Zend/zend_signal.h
--- php-8.3.4.orig/Zend/zend_signal.h	2024-03-13 00:42:26.000000000 +0100
+++ php-8.3.4/Zend/zend_signal.h	2025-05-17 01:23:53.828548526 +0200
@@ -84,12 +84,12 @@
 # endif /* not ZTS */
 
 ZEND_API void zend_signal_handler_unblock(void);
-void zend_signal_activate(void);
-void zend_signal_deactivate(void);
+ZEND_API void zend_signal_activate(void);
+ZEND_API void zend_signal_deactivate(void);
 BEGIN_EXTERN_C()
 ZEND_API void zend_signal_startup(void);
 END_EXTERN_C()
-void zend_signal_init(void);
+ZEND_API void zend_signal_init(void);
 
 ZEND_API void zend_signal(int signo, void (*handler)(int));
 ZEND_API void zend_sigaction(int signo, const struct sigaction *act, struct sigaction *oldact);