ci: add x86_64-linux-musl release

.github/workflows/release-musl.yml

@@ -0,0 +1,50 @@
+name: release-musl
+
+on:
+  push:
+    tags:
+      - "*"
+  workflow_dispatch:
+
+jobs:
+  release-musl:
+    name: release-x86_64-linux-musl
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: build-image
+        run: |
+          pushd "$(mktemp -d)"
+          curl -f -L --retry 5 https://github.com/tweag/rust-alpine-mimalloc/archive/refs/heads/master.tar.gz | tar xz --strip-components=1
+          podman build \
+            --network host \
+            --pull \
+            --squash-all \
+            --tag rust:alpine-mimalloc \
+            .
+          popd
+
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: checkout-submodules
+        run: git submodule update --init --depth 1 --jobs 2
+
+      - name: build & test
+        run: |
+          podman run \
+            --env GITHUB_REF_NAME=$GITHUB_REF_NAME \
+            --init \
+            --network host \
+            --rm \
+            --tmpfs /tmp:exec \
+            --volume $PWD:/workspace \
+            --workdir /workspace \
+            rust:alpine-mimalloc \
+            /workspace/build-alpine.sh
+
+      - name: upload-artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: binaryen-x86_64-linux-musl
+          path: binaryen-*-x86_64-linux-musl.tar.zst

CMakeLists.txt

@@ -299,7 +299,7 @@ else()
     else()
       add_link_flag("-Wl,--stack,8388608")
     endif()
-  elseif(NOT EMSCRIPTEN)
+  elseif((NOT EMSCRIPTEN) AND (NOT BUILD_STATIC_LIB))
     add_compile_flag("-fPIC")
   endif()
   add_debug_compile_flag("-g3")

build-alpine.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+
+set -eu
+
+apk upgrade
+apk add \
+  alpine-sdk \
+  clang \
+  cmake \
+  coreutils \
+  git \
+  lld \
+  llvm \
+  nodejs \
+  py3-pip \
+  samurai \
+  zstd
+
+pip3 install --break-system-packages -r requirements-dev.txt
+
+cmake \
+  -Bbuild \
+  -G Ninja \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
+  -DCMAKE_C_COMPILER=clang \
+  -DCMAKE_CXX_COMPILER="$PWD/clang++.py" \
+  -DCMAKE_INSTALL_PREFIX="/tmp/binaryen-$GITHUB_REF_NAME" \
+  -DCMAKE_JOB_POOLS="linking=1" \
+  -DCMAKE_JOB_POOL_LINK=linking \
+  -DCMAKE_EXE_LINKER_FLAGS="-fuse-ld=lld -Wl,--thinlto-cache-dir=$PWD/build/lto-cache -s -static" \
+  -DBUILD_STATIC_LIB=ON \
+  -DENABLE_WERROR=OFF \
+  -DINSTALL_LIBS=OFF
+
+cmake --build build --target install -- -v
+
+CC=clang CXX=clang++ COMPILER_FLAGS="-Wno-unused-command-line-argument -fuse-ld=lld -Wl,--thinlto-cache-dir=$PWD/build/lto-cache -s -static" ./check.py --binaryen-bin build/bin --binaryen-lib build/lib
+
+tar \
+  --sort=name \
+  --mtime=1970-01-01T00:00:00Z \
+  --owner=0 \
+  --group=0 \
+  --numeric-owner \
+  --use-compress-program="zstd --ultra -22 --threads=0" \
+  -cf "binaryen-$GITHUB_REF_NAME-x86_64-linux-musl.tar.zst" \
+  -C /tmp \
+  "binaryen-$GITHUB_REF_NAME"

clang++.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+
+if __name__ == "__main__":
+    args = [arg for arg in sys.argv[1:] if not arg in {"-fcolor-diagnostics"}]
+    if any(any(arg.endswith(f) for f in {"Precompute.cpp"}) for arg in args):
+        compiler = "g++"
+        args = [arg for arg in args if not arg.startswith("-flto")]
+    else:
+        compiler = "clang++"
+    os.execvp(compiler, [compiler] + args)