From 6f796134acbe4a201093b693fc14f0dba0c89f1b Mon Sep 17 00:00:00 2001
From: Sergey Fedorov <vital.had@gmail.com>
Date: Fri, 17 Oct 2025 15:10:05 +0800
Subject: [PATCH] rng: fix for Apple

---
 rng/unix/dune                 | 5 +++--
 rng/unix/mc_getrandom_stubs.c | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/rng/unix/dune b/rng/unix/dune
index caaa33ed..a3d93816 100644
--- rng/unix/dune
+++ rng/unix/dune
@@ -21,8 +21,9 @@
  (foreign_stubs
   (language c)
   (include_dirs ../../src/native)
-  (names mc_getrandom_stubs))
- (c_library_flags
+  (names mc_getrandom_stubs)
+  (flags (-isystem @PREFIX@/include/LegacySupport)))
+ (c_library_flags -lMacportsLegacySupport
   (:include rng_c_flags.sexp)))
 
 (env
diff --git a/rng/unix/mc_getrandom_stubs.c b/rng/unix/mc_getrandom_stubs.c
index da7032ce..08ff4e4d 100644
--- rng/unix/mc_getrandom_stubs.c
+++ rng/unix/mc_getrandom_stubs.c
@@ -43,6 +43,7 @@ void raw_getrandom (uint8_t *data, size_t len) {
 #elif (defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)  || defined(__OpenBSD__) || defined(__APPLE__)) || defined(__NetBSD__)
 // on BSD and macOS, loop (in pieces of 256) getentropy
 #if defined(__APPLE__)
+#include <sys/types.h> /* u_int */
 // on macOS, getentropy is defined in sys/random.h (on BSD in unistd.h)
 #include <sys/random.h>
 #endif