From 830831dcba50bfc8a0f685ce72f25d0208c9f33f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sun, 16 Nov 2025 21:52:55 +0100
Subject: [PATCH] ci: add s390x-linux scripts

---
 ci/s390x-linux-debug.sh   | 65 +++++++++++++++++++++++++++++++++++
 ci/s390x-linux-release.sh | 71 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 136 insertions(+)
 create mode 100755 ci/s390x-linux-debug.sh
 create mode 100755 ci/s390x-linux-release.sh

diff --git a/ci/s390x-linux-debug.sh b/ci/s390x-linux-debug.sh
new file mode 100755
index 0000000000..ce5057634f
--- /dev/null
+++ b/ci/s390x-linux-debug.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+
+# Requires cmake ninja-build
+
+set -x
+set -e
+
+TARGET="s390x-linux-musl"
+MCPU="z15"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.16.0-dev.1354+94e98bfe8"
+PREFIX="$HOME/deps/$CACHE_BASENAME"
+ZIG="$PREFIX/bin/zig"
+
+# Override the cache directories because they won't actually help other CI runs
+# which will be testing alternate versions of zig, and ultimately would just
+# fill up space on the hard drive for no reason.
+export ZIG_GLOBAL_CACHE_DIR="$PWD/zig-global-cache"
+export ZIG_LOCAL_CACHE_DIR="$PWD/zig-local-cache"
+
+mkdir build-debug
+cd build-debug
+
+export CC="$ZIG cc -target $TARGET -mcpu=$MCPU"
+export CXX="$ZIG c++ -target $TARGET -mcpu=$MCPU"
+
+cmake .. \
+  -DCMAKE_INSTALL_PREFIX="stage3-debug" \
+  -DCMAKE_PREFIX_PATH="$PREFIX" \
+  -DCMAKE_BUILD_TYPE=Debug \
+  -DZIG_TARGET_TRIPLE="$TARGET" \
+  -DZIG_TARGET_MCPU="$MCPU" \
+  -DZIG_STATIC=ON \
+  -DZIG_NO_LIB=ON \
+  -GNinja \
+  -DCMAKE_C_LINKER_DEPFILE_SUPPORTED=FALSE \
+  -DCMAKE_CXX_LINKER_DEPFILE_SUPPORTED=FALSE
+# https://github.com/ziglang/zig/issues/22213
+
+# Now cmake will use zig as the C/C++ compiler. We reset the environment variables
+# so that installation and testing do not get affected by them.
+unset CC
+unset CXX
+
+ninja install
+
+# No -fqemu and -fwasmtime here as they're covered by the x86_64-linux scripts.
+stage3-debug/bin/zig build test docs \
+  --maxrss 30064771072 \
+  -Dstatic-llvm \
+  -Dskip-non-native \
+  -Dtarget=native-native-musl \
+  --search-prefix "$PREFIX" \
+  --zig-lib-dir "$PWD/../lib" \
+  --test-timeout 4m
+
+stage3-debug/bin/zig build \
+  --prefix stage4-debug \
+  -Denable-llvm \
+  -Dno-lib \
+  -Dtarget=$TARGET \
+  -Dcpu=$MCPU \
+  -Duse-zig-libcxx \
+  -Dversion-string="$(stage3-debug/bin/zig version)"
+
+stage4-debug/bin/zig test ../test/behavior.zig
diff --git a/ci/s390x-linux-release.sh b/ci/s390x-linux-release.sh
new file mode 100755
index 0000000000..e474b89ffe
--- /dev/null
+++ b/ci/s390x-linux-release.sh
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+# Requires cmake ninja-build
+
+set -x
+set -e
+
+TARGET="s390x-linux-musl"
+MCPU="z15"
+CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.16.0-dev.1354+94e98bfe8"
+PREFIX="$HOME/deps/$CACHE_BASENAME"
+ZIG="$PREFIX/bin/zig"
+
+# Override the cache directories because they won't actually help other CI runs
+# which will be testing alternate versions of zig, and ultimately would just
+# fill up space on the hard drive for no reason.
+export ZIG_GLOBAL_CACHE_DIR="$PWD/zig-global-cache"
+export ZIG_LOCAL_CACHE_DIR="$PWD/zig-local-cache"
+
+mkdir build-release
+cd build-release
+
+export CC="$ZIG cc -target $TARGET -mcpu=$MCPU"
+export CXX="$ZIG c++ -target $TARGET -mcpu=$MCPU"
+
+cmake .. \
+  -DCMAKE_INSTALL_PREFIX="stage3-release" \
+  -DCMAKE_PREFIX_PATH="$PREFIX" \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DZIG_TARGET_TRIPLE="$TARGET" \
+  -DZIG_TARGET_MCPU="$MCPU" \
+  -DZIG_STATIC=ON \
+  -DZIG_NO_LIB=ON \
+  -GNinja \
+  -DCMAKE_C_LINKER_DEPFILE_SUPPORTED=FALSE \
+  -DCMAKE_CXX_LINKER_DEPFILE_SUPPORTED=FALSE
+# https://github.com/ziglang/zig/issues/22213
+
+# Now cmake will use zig as the C/C++ compiler. We reset the environment variables
+# so that installation and testing do not get affected by them.
+unset CC
+unset CXX
+
+ninja install
+
+# No -fqemu and -fwasmtime here as they're covered by the x86_64-linux scripts.
+stage3-release/bin/zig build test docs \
+  --maxrss 30064771072 \
+  -Dstatic-llvm \
+  -Dskip-non-native \
+  -Dtarget=native-native-musl \
+  --search-prefix "$PREFIX" \
+  --zig-lib-dir "$PWD/../lib" \
+  --test-timeout 4m
+
+# Ensure that stage3 and stage4 are byte-for-byte identical.
+stage3-release/bin/zig build \
+  --prefix stage4-release \
+  -Denable-llvm \
+  -Dno-lib \
+  -Doptimize=ReleaseFast \
+  -Dstrip \
+  -Dtarget=$TARGET \
+  -Dcpu=$MCPU \
+  -Duse-zig-libcxx \
+  -Dversion-string="$(stage3-release/bin/zig version)"
+
+# diff returns an error code if the files differ.
+echo "If the following command fails, it means nondeterminism has been"
+echo "introduced, making stage3 and stage4 no longer byte-for-byte identical."
+diff stage3-release/bin/zig stage4-release/bin/zig