Fix:
error: implicitly declaring library function 'exit' with type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-function-declaration]
--- configure.orig	2024-06-18 23:12:44.000000000 -0500
+++ configure	2024-06-18 23:25:01.000000000 -0500
@@ -17719,6 +17719,7 @@
 /* end confdefs.h.  */
 
                 #include <stddef.h>
+                #include <stdlib.h>
                 #include <szlib.h>
 
                 int main(void)
@@ -17758,6 +17759,7 @@
 /* end confdefs.h.  */
 
                 #include <stddef.h>
+                #include <stdlib.h>
                 #include <szlib.h>
 
                 int main(void)