From 774dfec29eef3cb17309ef878f96559876eb2b7f Mon Sep 17 00:00:00 2001
From: Francisco Javier Trujillo Mata <fjtrujy@gmail.com>
Date: Mon, 11 May 2026 15:24:26 +0200
Subject: [PATCH] Fix mingw32 build: cast setsockopt optval to const char *

On Windows, the Winsock setsockopt prototype takes `const char *optval`,
not `const void *` like POSIX. Passing `&one` (int *) breaks the mingw32
build with -Wincompatible-pointer-types. Cast to (const char *) so it
compiles on both POSIX and Winsock.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 src/ps2link.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ps2link.c b/src/ps2link.c
index 4199ad6..2e96a31 100644
--- a/src/ps2link.c
+++ b/src/ps2link.c
@@ -58,7 +58,7 @@
   // ~200 ms stall per read() syscall, making fread() ~400x slower than read().
   if (request_socket > 0) {
     int one = 1;
-    setsockopt(request_socket, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one));
+    setsockopt(request_socket, IPPROTO_TCP, TCP_NODELAY, (const char *)&one, sizeof(one));
   }
 
   // Create the request thread.