diff --git a/src/main/tools/process-wrapper-legacy.cc b/src/main/tools/process-wrapper-legacy.cc
index 60a01e6..92cf6ef 100644
--- a/src/main/tools/process-wrapper-legacy.cc
+++ b/src/main/tools/process-wrapper-legacy.cc
@@ -34,6 +34,11 @@
 #include "src/main/tools/process-wrapper-options.h"
 #include "src/main/tools/process-wrapper.h"
 
+#if defined(__linux__) && !defined(PR_SET_CHILD_SUBREAPER)
+// https://github.com/torvalds/linux/blob/v5.7/tools/include/uapi/linux/prctl.h#L158
+#define PR_SET_CHILD_SUBREAPER 36
+#endif
+
 pid_t LegacyProcessWrapper::child_pid = 0;
 volatile sig_atomic_t LegacyProcessWrapper::last_signal = 0;
 
diff --git a/src/main/tools/process-wrapper-options.cc b/src/main/tools/process-wrapper-options.cc
index 0c0e97e..8f6a782 100644
--- a/src/main/tools/process-wrapper-options.cc
+++ b/src/main/tools/process-wrapper-options.cc
@@ -18,6 +18,9 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#if defined(__linux__)
+#include <sys/prctl.h>
+#endif
 #include <unistd.h>
 
 #include <cstring>
@@ -27,6 +30,11 @@
 
 #include "src/main/tools/logging.h"
 
+#if defined(__linux__) && !defined(PR_GET_CHILD_SUBREAPER)
+// https://github.com/torvalds/linux/blob/v5.7/tools/include/uapi/linux/prctl.h#L159
+#define PR_GET_CHILD_SUBREAPER 37
+#endif
+
 struct Options opt;
 
 // Print out a usage error. argc and argv are the argument counter and vector,
@@ -117,6 +125,15 @@
         opt.debug = true;
         break;
       case 'W':
+#if defined(__linux__)
+        unsigned long result;  // NOLINT(runtime/int) - interface requires long
+        if (prctl(PR_GET_CHILD_SUBREAPER, &result, 0, 0, 0) == EINVAL) {
+          fprintf(stderr,
+                  "warning: The \"wait for subprocesses\" feature requires "
+                  "Linux kernel version 3.4 or later.\n");
+          break;
+        }
+#endif
         opt.wait_fix = true;
         break;
       case '?':