From bfe4174a91d11c0b990f01459bd5c65bb6c07aa3 Mon Sep 17 00:00:00 2001
From: Adam Gastineau <adam@agg.im>
Date: Sun, 25 Feb 2024 06:52:56 -0800
Subject: [PATCH] xrOS support

Swapped to visionOS target_os

(apply <https://github.com/rust-lang/libc/pull/3568> to `main`)
[ resolve conflicts - Trevor ]
(cherry picked from commit b5b0f690a373e4615776413f68fccfc146179d02)
---
 build.rs                  | 2 +-
 src/unix/bsd/apple/mod.rs | 2 +-
 src/unix/bsd/mod.rs       | 3 ++-
 src/unix/mod.rs           | 8 ++++++--
 4 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/build.rs b/build.rs
index f9eb898cca9cf..46f5dc8efff7c 100644
--- a/build.rs
+++ b/build.rs
@@ -22,7 +22,7 @@ const ALLOWED_CFGS: &'static [&'static str] = &[
 
 // Extra values to allow for check-cfg.
 const CHECK_CFG_EXTRA: &'static [(&'static str, &'static [&'static str])] = &[
-    ("target_os", &["switch", "aix", "ohos", "hurd"]),
+    ("target_os", &["switch", "aix", "ohos", "hurd", "visionos"]),
     ("target_env", &["illumos", "wasi", "aix", "ohos"]),
     (
         "target_arch",
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index 758e069f05ce4..84e725a91cb9d 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -6427,7 +6427,7 @@ cfg_if! {
     }
 }
 cfg_if! {
-    if #[cfg(any(target_os = "macos", target_os = "ios", target_os = "tvos"))] {
+    if #[cfg(any(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "visionos"))] {
         extern "C" {
             pub fn memmem(
                 haystack: *const ::c_void,
diff --git a/src/unix/bsd/mod.rs b/src/unix/bsd/mod.rs
index 69a98e1c7e3db..487547d00540a 100644
--- a/src/unix/bsd/mod.rs
+++ b/src/unix/bsd/mod.rs
@@ -39,6 +39,7 @@ s! {
                       target_os = "ios",
                       target_os = "tvos",
                       target_os = "watchos",
+                      target_os = "visionos",
                       target_os = "netbsd",
                       target_os = "openbsd")))]
         pub pw_fields: ::c_int,
@@ -924,7 +925,7 @@ cfg_if! {
 }
 
 cfg_if! {
-    if #[cfg(any(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "watchos"))] {
+    if #[cfg(any(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "watchos", target_os = "visionos"))] {
         mod apple;
         pub use self::apple::*;
     } else if #[cfg(any(target_os = "openbsd", target_os = "netbsd"))] {
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index 7b39e4784f96d..1e6daface673a 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -381,6 +381,7 @@ cfg_if! {
                         target_os = "ios",
                         target_os = "tvos",
                         target_os = "watchos",
+                        target_os = "visionos",
                         target_os = "android",
                         target_os = "openbsd",
                         target_os = "nto",
@@ -1043,7 +1044,8 @@ extern "C" {
             target_os = "macos",
             target_os = "ios",
             target_os = "tvos",
-            target_os = "watchos"
+            target_os = "watchos",
+            target_os = "visionos"
         ),
         link_name = "realpath$DARWIN_EXTSN"
     )]
@@ -1218,7 +1220,8 @@ extern "C" {
             target_os = "macos",
             target_os = "ios",
             target_os = "tvos",
-            target_os = "watchos"
+            target_os = "watchos",
+            target_os = "visionos"
         ),
         link_name = "res_9_init"
     )]
@@ -1581,6 +1584,7 @@ cfg_if! {
                         target_os = "ios",
                         target_os = "tvos",
                         target_os = "watchos",
+                        target_os = "visionos",
                         target_os = "freebsd",
                         target_os = "dragonfly",
                         target_os = "openbsd",