From e861515053bc3ec8624abb2856a1f809f13a51d9 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Fri, 28 Mar 2025 14:16:22 -0400
Subject: Make getrandom() platform-compatible

---
 src/stdlib/stdlib.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'src/stdlib/stdlib.c')

diff --git a/src/stdlib/stdlib.c b/src/stdlib/stdlib.c
index 4a1f7dd8..97c7b219 100644
--- a/src/stdlib/stdlib.c
+++ b/src/stdlib/stdlib.c
@@ -10,7 +10,6 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <sys/param.h>
-#include <sys/random.h>
 #include <time.h>
 
 #include "print.h"
@@ -30,6 +29,19 @@
 #include "text.h"
 #include "util.h"
 
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
+static ssize_t getrandom(void *buf, size_t buflen, unsigned int flags) {
+    (void)flags;
+    arc4random_buf(buf, buflen);
+    return buflen;
+}
+#elif defined(__linux__)
+// Use getrandom()
+#   include <sys/random.h>
+#else
+    #error "Unsupported platform for secure random number generation"
+#endif
+
 public bool USE_COLOR;
 
 static void signal_handler(int sig, siginfo_t *, void *)
-- 
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