From 8c39f484bb29dc2b9157e8a2bfb9c78f59be10de Mon Sep 17 00:00:00 2001
From: Michael Vogt <michael.vogt@gmail.com>
Date: Tue, 30 Jan 2024 09:55:08 +0100
Subject: [PATCH] entrypoint: setup binfmt_misc handling for cross building

---
 entrypoint.sh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/entrypoint.sh b/entrypoint.sh
index 3930a16a2..99185c34d 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,3 +1,21 @@
 #!/bin/bash
 set -euo pipefail
+
+if mount -t binfmt_misc none /proc/sys/fs/binfmt_misc; then
+    case "$(uname -m)" in
+	"x86_64")
+	    if [ ! -e /proc/sys/fs/binfmt_misc/qemu-aarch64 ]; then
+		cat /usr/lib/binfmt.d/qemu-aarch64-static.conf > /proc/sys/fs/binfmt_misc/register
+	    fi
+	    ;;
+	"aarch64")
+	    if [ ! -e /proc/sys/fs/binfmt_misc/qemu-x86_64 ]; then
+		cat /usr/lib/binfmt.d/qemu-x86_64-static.conf > /proc/sys/fs/binfmt_misc/register
+	    fi
+    esac
+else
+    echo "WARN: cannot setup binfmt_misc handling"
+fi
+
+
 /usr/bin/bootc-image-builder build --store /store --rpmmd /rpmmd --output /output "$@"