From 03e6048dc950bd42feca8d1d51acc61969bf74de Mon Sep 17 00:00:00 2001
From: Chris Nixon <chris.nixon@sigma.me.uk>
Date: Tue, 30 Mar 2021 22:31:52 +0100
Subject: [PATCH 1/2] Check compile target at runtime in build

---
 build/Cargo.toml |  3 ---
 build/src/lib.rs | 17 ++++++++---------
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/build/Cargo.toml b/build/Cargo.toml
index 3978f7cc..997ae113 100644
--- a/build/Cargo.toml
+++ b/build/Cargo.toml
@@ -10,7 +10,4 @@ repository = "https://github.com/napi-rs/napi-rs"
 version = "1.0.1"
 
 [dependencies]
-cfg-if = "1"
-
-[target.'cfg(windows)'.dependencies]
 ureq = "2"
diff --git a/build/src/lib.rs b/build/src/lib.rs
index b3d387a0..72046f9d 100644
--- a/build/src/lib.rs
+++ b/build/src/lib.rs
@@ -1,11 +1,10 @@
-cfg_if::cfg_if! {
-  if #[cfg(windows)] {
-    mod windows;
-    pub use windows::setup;
-  } else if #[cfg(target_os = "macos")] {
-    mod macos;
-    pub use macos::setup;
-  } else {
-    pub fn setup() { }
+mod macos;
+mod windows;
+
+pub fn setup() {
+  match std::env::var("CARGO_CFG_TARGET_OS").as_deref() {
+    Ok("macos") => macos::setup(),
+    Ok("windows") => windows::setup(),
+    _ => {}
   }
 }

From 74e6cf2916a15909203760da456beb7c0d7c13f0 Mon Sep 17 00:00:00 2001
From: Chris Nixon <chris.nixon@sigma.me.uk>
Date: Thu, 1 Apr 2021 23:32:01 +0100
Subject: [PATCH 2/2] Don't try to use ureq on musl targets

---
 build/Cargo.toml |  3 +++
 build/src/lib.rs | 17 +++++++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/build/Cargo.toml b/build/Cargo.toml
index 997ae113..c0d0c837 100644
--- a/build/Cargo.toml
+++ b/build/Cargo.toml
@@ -10,4 +10,7 @@ repository = "https://github.com/napi-rs/napi-rs"
 version = "1.0.1"
 
 [dependencies]
+cfg-if = "1"
+
+[target.'cfg(not(target_env = "musl"))'.dependencies]
 ureq = "2"
diff --git a/build/src/lib.rs b/build/src/lib.rs
index 72046f9d..7a4e51b1 100644
--- a/build/src/lib.rs
+++ b/build/src/lib.rs
@@ -1,10 +1,23 @@
 mod macos;
-mod windows;
+
+cfg_if::cfg_if! {
+  if #[cfg(not(target_env = "musl"))] {
+    mod windows;
+  }
+}
 
 pub fn setup() {
   match std::env::var("CARGO_CFG_TARGET_OS").as_deref() {
     Ok("macos") => macos::setup(),
-    Ok("windows") => windows::setup(),
+    Ok("windows") => {
+      cfg_if::cfg_if! {
+        if #[cfg(not(target_env = "musl"))] {
+          windows::setup()
+        } else {
+          eprintln!("Cross compiling to windows-msvc is not supported from *-musl hosts")
+        }
+      }
+    }
     _ => {}
   }
 }