From 23f4cc13a22406cc350fd17df8e540fb797b79cb Mon Sep 17 00:00:00 2001
From: Rudi Grinberg <me@rgrinberg.com>
Date: Tue, 5 Sep 2023 23:33:55 +0100
Subject: [PATCH] Haiku Support (#51)

* Haiku

Signed-off-by: Anarchos <sylvain_kerjean@hotmail.com>
---
 CHANGES.md        | 3 +++
 src/spawn_stubs.c | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/CHANGES.md b/CHANGES.md
index 4e834a4..fd6e445 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,8 @@
 # Unreleased
 
+- [haiku] Fix compilation on Haiku OS. The header sys/syscalls.h isn't
+  available, neither is pipe2()
+
 - Allow setting the sigprocmask for spawned processes (#32)
 
 # v0.15.1
diff --git a/src/spawn_stubs.c b/src/spawn_stubs.c
index 69a1844..dfd44e4 100644
--- a/src/spawn_stubs.c
+++ b/src/spawn_stubs.c
@@ -33,7 +33,7 @@ CAMLprim value spawn_is_osx()
 
 #include <assert.h>
 #include <string.h>
-#if !defined(__CYGWIN__)
+#if !defined(__CYGWIN__) && !defined(__HAIKU__)
 #include <sys/syscall.h>
 #endif
 #include <sys/types.h>
@@ -48,7 +48,7 @@ CAMLprim value spawn_is_osx()
    | pipe2                                                           |
    +-----------------------------------------------------------------+ */
 
-#if defined(__APPLE__)
+#if defined(__APPLE__) || defined(__HAIKU__)
 
 /* vfork(2) is deprecated on macOS >= 12, so we use fork(2) instead. */
 # if defined(__MAC_OS_X_VERSION_MAX_ALLOWED)