From 967980222fabf624fd1b44842cd3dbfa9c0b21be Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Mon, 2 Oct 2023 20:50:19 +0900
Subject: [PATCH] Use __errno_location on DragonFly BSD

DragonFly BSD 5.8+ has __errno_location.
https://github.com/DragonFlyBSD/DragonFlyBSD/commit/60d311380ff2bf02a87700a0f3e6eb53e6034920
---
 Cargo.toml  |  3 ---
 src/unix.rs | 10 ++++++----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 354d809..a2d5360 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,9 +22,6 @@ features = [
   "Win32_System_Diagnostics_Debug",
 ]
 
-[target.'cfg(target_os="dragonfly")'.dependencies]
-errno-dragonfly = "0.1.2"
-
 [target.'cfg(target_os="wasi")'.dependencies]
 libc = { version = "0.2", default-features = false }
 
diff --git a/src/unix.rs b/src/unix.rs
index c61528a..86a35d9 100644
--- a/src/unix.rs
+++ b/src/unix.rs
@@ -13,8 +13,6 @@
 // except according to those terms.
 
 use core::str;
-#[cfg(target_os = "dragonfly")]
-use errno_dragonfly::errno_location;
 use libc::{self, c_char, c_int, size_t, strlen};
 
 use crate::Errno;
@@ -57,7 +55,6 @@ pub fn set_errno(Errno(errno): Errno) {
 }
 
 extern "C" {
-    #[cfg(not(target_os = "dragonfly"))]
     #[cfg_attr(
         any(target_os = "macos", target_os = "ios", target_os = "freebsd"),
         link_name = "__error"
@@ -78,7 +75,12 @@ extern "C" {
     )]
     #[cfg_attr(target_os = "haiku", link_name = "_errnop")]
     #[cfg_attr(
-        any(target_os = "linux", target_os = "hurd", target_os = "redox"),
+        any(
+            target_os = "linux",
+            target_os = "hurd",
+            target_os = "redox",
+            target_os = "dragonfly"
+        ),
         link_name = "__errno_location"
     )]
     #[cfg_attr(target_os = "aix", link_name = "_Errno")]