From 92d4b313eb11a24292e1c91b07a2887b719265d4 Mon Sep 17 00:00:00 2001
From: Mads Marquart <mads@marquart.dk>
Date: Mon, 19 Feb 2024 12:45:11 +0100
Subject: [PATCH] Make LLVM target contain correct deployment target info on
 Mac Catalyst

---
 .../rustc_target/src/spec/base/apple/mod.rs   | 21 +++++++++++++++----
 .../spec/targets/aarch64_apple_ios_macabi.rs  |  9 +++-----
 .../spec/targets/x86_64_apple_ios_macabi.rs   |  9 +++-----
 3 files changed, 23 insertions(+), 16 deletions(-)

diff --git a/compiler/rustc_target/src/spec/base/apple/mod.rs b/compiler/rustc_target/src/spec/base/apple/mod.rs
index 0724ba53f4e..1caa0eccc62 100644
--- a/compiler/rustc_target/src/spec/base/apple/mod.rs
+++ b/compiler/rustc_target/src/spec/base/apple/mod.rs
@@ -106,11 +106,9 @@ fn pre_link_args(os: &'static str, arch: Arch, abi: &'static str) -> LinkArgs {
     }
     .into();
 
-    let arch = arch.target_name();
-
     let mut args = TargetOptions::link_args(
         LinkerFlavor::Darwin(Cc::No, Lld::No),
-        &["-arch", arch, "-platform_version"],
+        &["-arch", arch.target_name(), "-platform_version"],
     );
     add_link_args_iter(
         &mut args,
@@ -118,7 +116,17 @@ fn pre_link_args(os: &'static str, arch: Arch, abi: &'static str) -> LinkArgs {
         [platform_name, platform_version.clone(), platform_version].into_iter(),
     );
     if abi != "macabi" {
-        add_link_args(&mut args, LinkerFlavor::Darwin(Cc::Yes, Lld::No), &["-arch", arch]);
+        add_link_args(
+            &mut args,
+            LinkerFlavor::Darwin(Cc::Yes, Lld::No),
+            &["-arch", arch.target_name()],
+        );
+    } else {
+        add_link_args_iter(
+            &mut args,
+            LinkerFlavor::Darwin(Cc::Yes, Lld::No),
+            ["-target".into(), mac_catalyst_llvm_target(arch).into()].into_iter(),
+        );
     }
 
     args
@@ -326,6 +334,11 @@ pub fn ios_llvm_target(arch: Arch) -> String {
     format!("{}-apple-ios{}.{}.0", arch.target_name(), major, minor)
 }
 
+pub fn mac_catalyst_llvm_target(arch: Arch) -> String {
+    let (major, minor) = mac_catalyst_deployment_target();
+    format!("{}-apple-ios{}.{}.0-macabi", arch.target_name(), major, minor)
+}
+
 fn ios_lld_platform_version(arch: Arch) -> String {
     let (major, minor) = ios_deployment_target(arch);
     format!("{major}.{minor}")
diff --git a/compiler/rustc_target/src/spec/targets/aarch64_apple_ios_macabi.rs b/compiler/rustc_target/src/spec/targets/aarch64_apple_ios_macabi.rs
index 78067a138a9..300e3014079 100644
--- a/compiler/rustc_target/src/spec/targets/aarch64_apple_ios_macabi.rs
+++ b/compiler/rustc_target/src/spec/targets/aarch64_apple_ios_macabi.rs
@@ -1,16 +1,13 @@
-use crate::spec::base::apple::{opts, Arch};
-use crate::spec::{Cc, FramePointer, LinkerFlavor, Lld, SanitizerSet, Target, TargetOptions};
+use crate::spec::base::apple::{mac_catalyst_llvm_target, opts, Arch};
+use crate::spec::{FramePointer, SanitizerSet, Target, TargetOptions};
 
 pub fn target() -> Target {
-    let llvm_target = "arm64-apple-ios14.0-macabi";
-
     let arch = Arch::Arm64_macabi;
     let mut base = opts("ios", arch);
-    base.add_pre_link_args(LinkerFlavor::Darwin(Cc::Yes, Lld::No), &["-target", llvm_target]);
     base.supported_sanitizers = SanitizerSet::ADDRESS | SanitizerSet::LEAK | SanitizerSet::THREAD;
 
     Target {
-        llvm_target: llvm_target.into(),
+        llvm_target: mac_catalyst_llvm_target(arch).into(),
         pointer_width: 64,
         data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
         arch: arch.target_arch(),
diff --git a/compiler/rustc_target/src/spec/targets/x86_64_apple_ios_macabi.rs b/compiler/rustc_target/src/spec/targets/x86_64_apple_ios_macabi.rs
index ff21e489333..e59f41185de 100644
--- a/compiler/rustc_target/src/spec/targets/x86_64_apple_ios_macabi.rs
+++ b/compiler/rustc_target/src/spec/targets/x86_64_apple_ios_macabi.rs
@@ -1,16 +1,13 @@
-use crate::spec::base::apple::{opts, Arch};
-use crate::spec::{Cc, LinkerFlavor, Lld, SanitizerSet, Target, TargetOptions};
+use crate::spec::base::apple::{mac_catalyst_llvm_target, opts, Arch};
+use crate::spec::{SanitizerSet, Target, TargetOptions};
 
 pub fn target() -> Target {
-    let llvm_target = "x86_64-apple-ios14.0-macabi";
-
     let arch = Arch::X86_64_macabi;
     let mut base = opts("ios", arch);
-    base.add_pre_link_args(LinkerFlavor::Darwin(Cc::Yes, Lld::No), &["-target", llvm_target]);
     base.supported_sanitizers = SanitizerSet::ADDRESS | SanitizerSet::LEAK | SanitizerSet::THREAD;
 
     Target {
-        llvm_target: llvm_target.into(),
+        llvm_target: mac_catalyst_llvm_target(arch).into(),
         pointer_width: 64,
         data_layout:
             "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128".into(),