zend_gdb disable gdb detection for FreeBSD < 11.

ref PR: #11599.

Close GH-11646

Author: devnexen

NEWS

@@ -13,6 +13,7 @@ PHP                                                                        NEWS
   . Fixed oss-fuzz #60011 (Mis-compilation of by-reference nullsafe operator).
     (ilutov)
   . Fixed use-of-uninitialized-value with ??= on assert. (ilutov)
+  . Fixed build for FreeBSD before the 11.0 releases. (David Carlier)
 
 - Curl:
   . Fix crash when an invalid callback function is passed to

Zend/zend_gdb.c

@@ -25,7 +25,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) && __FreeBSD_version >= 1100000
 # include <sys/user.h>
 # include <libutil.h>
 #endif
@@ -142,7 +142,7 @@ ZEND_API bool zend_gdb_present(void)
 
 		close(fd);
 	}
-#elif defined(__FreeBSD__)
+#elif defined(__FreeBSD__) && __FreeBSD_version >= 1100000
     struct kinfo_proc *proc = kinfo_getproc(getpid());
 
     if (proc) {