From 094af6ea07ce9cf0fc85a036deaff2ca9e5cd9c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Gronowski?= <pawel.gronowski@docker.com>
Date: Wed, 10 Apr 2024 16:09:20 +0200
Subject: [PATCH] darwin/build: Disallow CGO_ENABLED=1 when cross-compiling
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Cross compiling CGO to Darwin requires an Apple SDK.

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
---
 scripts/build/.variables | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/scripts/build/.variables b/scripts/build/.variables
index de7945d0a7..7cfec2409f 100755
--- a/scripts/build/.variables
+++ b/scripts/build/.variables
@@ -44,6 +44,16 @@ if [ "${GOOS}" = "windows" ]; then
 fi
 export TARGET
 
+# No CGO when cross building to darwin
+if [ "$(go env GOOS)" = "darwin" ] && [ "$(uname)" != "Darwin" ]; then
+    if [ -z "$CGO_ENABLED" ]; then
+        CGO_ENABLED=0
+    elif [ "$CGO_ENABLED" = "1" ]; then
+        echo "CGO_ENABLED=1 not supported when cross-compiling for Darwin"
+        exit 1
+    fi
+fi
+
 if [ -z "$CGO_ENABLED" ]; then
     case "$(go env GOOS)" in
         linux)