From e9ab040ce8e72e299a3d8fbd109865b1e218eb57 Mon Sep 17 00:00:00 2001
From: ed <s@ocv.me>
Date: Sun, 26 Oct 2025 23:30:57 +0100
Subject: [PATCH] docker: fix crossbuild from aarch64

---
 scripts/docker/make.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/docker/make.sh b/scripts/docker/make.sh
index 2c752cdf..3535fffa 100755
--- a/scripts/docker/make.sh
+++ b/scripts/docker/make.sh
@@ -85,6 +85,11 @@ filt=
         wget https://github.com/9001/copyparty/releases/latest/download/copyparty-sfx.py -O $fp
     }
 
+    # enable arm32 crossbuild from aarch64 (macbook or whatever)
+    [ $(uname -m) = aarch64 ] && [ ! -e /proc/sys/fs/binfmt_misc/qemu-arm ] &&
+        echo ":qemu-arm:M:0:\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm-static:F" |
+        sudo tee >/dev/null /proc/sys/fs/binfmt_misc/register
+
     # kill abandoned builders
     ps aux | awk '/bin\/qemu-[^-]+-static/{print$2}' | xargs -r kill -9