gh-90905: Allow cross-compilation on macOS (#128385)

zanieb · web-flow · commit 6ecb620a0cae · 2025-01-13T03:38:28.000-05:00
diff --git a/Misc/NEWS.d/next/Build/2024-12-31-17-09-37.gh-issue-90905.PjLNai.rst b/Misc/NEWS.d/next/Build/2024-12-31-17-09-37.gh-issue-90905.PjLNai.rst
@@ -0,0 +1 @@
+Add support for cross-compiling to x86_64 on aarch64/arm64 macOS.
diff --git a/configure b/configure
diff --git a/configure.ac b/configure.ac
@@ -330,6 +330,9 @@ then
 	*-apple-ios*)
 		ac_sys_system=iOS
 		;;
+	*-*-darwin*)
+		ac_sys_system=Darwin
+		;;
 	*-*-vxworks*)
 	    ac_sys_system=VxWorks
 	    ;;
@@ -790,6 +793,15 @@ if test "$cross_compiling" = yes; then
 				;;
 		esac
 		;;
+	*-*-darwin*)
+		case "$host_cpu" in
+		arm*)
+			_host_ident=arm
+			;;
+		*)
+			_host_ident=$host_cpu
+		esac
+		;;
 	*-*-vxworks*)
 		_host_ident=$host_cpu
 		;;

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Add support for cross-compiling to x86_64 on aarch64/arm64 macOS.`