From 3800245849890755a51d2ecf1ac4c67974d7998b Mon Sep 17 00:00:00 2001
From: Michiel Borkent <michielborkent@gmail.com>
Date: Mon, 10 May 2021 23:03:46 +0200
Subject: [PATCH] musl

---
 script/setup-musl | 50 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100755 script/setup-musl

diff --git a/script/setup-musl b/script/setup-musl
new file mode 100755
index 00000000..1dbddd5b
--- /dev/null
+++ b/script/setup-musl
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+# This script sets up the latest available musl-tools using apt pinning from debian unstable.
+# The one available in stable and testing are quite outdated and this ensures we get the latest improvements
+# This explictly installs musl from unstable and keeps the others at a higher priority
+
+cat >> /etc/apt/sources.list <<eof
+deb http://ftp.us.debian.org/debian unstable main non-free contrib
+deb http://non-us.debian.org/debian-non-us unstable/non-us main contrib non-free
+eof
+
+cat >> /etc/apt/preferences <<eof
+Package: *
+Pin: release a=stable
+Pin-Priority: 700
+Package: *
+Pin: release a=testing
+Pin-Priority: 650
+Package: *
+pin: release a=unstable
+pin-priority: 600
+eof
+
+apt-get update -y && apt-get install musl-tools/unstable -y
+
+ZLIB_VERSION="1.2.11"
+
+curl -O -sL "https://zlib.net/zlib-${ZLIB_VERSION}.tar.gz"
+
+echo "c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1 zlib-${ZLIB_VERSION}.tar.gz" |
+    sha256sum --check
+tar xf "zlib-${ZLIB_VERSION}.tar.gz"
+
+arch=${BABASHKA_ARCH:-"x86_64"}
+echo "ARCH: $arch"
+
+cd "zlib-${ZLIB_VERSION}"
+CC=musl-gcc ./configure --static --prefix=/usr/lib/$arch-linux-musl/
+make CC=musl-gcc
+sudo make install
+export CC=gcc
+cd ..
+
+# depending on GCC version, we will have different directories here.
+# for example, for GCC 6.3.0 we will have:
+# - /usr/lib/gcc/x86_64-linux-gnu/6
+# - /usr/lib/gcc/x86_64-linux-gnu/6.3.0
+for dest_dir in /usr/lib/gcc/$arch-linux-gnu/*; do
+    sudo cp -f /usr/lib/$arch-linux-musl/lib/libz.a "$dest_dir"
+done