From 8b59d52ca3b6157f4cac333e6576c76f1fa546e8 Mon Sep 17 00:00:00 2001
From: Andrew Childs <lorne@cons.org.nz>
Date: Fri, 5 Mar 2021 17:34:46 +0900
Subject: [PATCH] cc-wrapper: use legacy -mmacosx-version-min for gcc

See https://github.com/NixOS/nixpkgs/pull/105026#discussion_r587169144
---
 pkgs/build-support/cc-wrapper/default.nix | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index 91d83424901..3d2a142c36d 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -485,10 +485,15 @@ stdenv.mkDerivation {
       substituteAll ${../wrapper-common/utils.bash} $out/nix-support/utils.bash
     ''
 
-    + optionalString stdenv.targetPlatform.isDarwin ''
-      echo "-arch ${targetPlatform.darwinArch}" >> $out/nix-support/cc-cflags
-      echo "-m${targetPlatform.darwinPlatform}-version-min=${targetPlatform.darwinMinVersion}" >> $out/nix-support/cc-cflags-before
-    ''
+    + optionalString stdenv.targetPlatform.isDarwin (
+      let darwinPlatformForCC =
+        if (targetPlatform.darwinPlatform == "macos" && isGNU) then "macosx"
+        else targetPlatform.darwinPlatform;
+      in ''
+        echo "-arch ${targetPlatform.darwinArch}" >> $out/nix-support/cc-cflags
+        echo "-m${darwinPlatformForCC}-version-min=${targetPlatform.darwinMinVersion}" >> $out/nix-support/cc-cflags-before
+      ''
+    )
 
     ##
     ## Extra custom steps