Precompile artifacts for musl

Author: jonatanklosko

.github/workflows/release.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Install system dependencies
         run: |
           apt-get update
-          apt-get install -y curl git cmake \
+          apt-get install -y curl wget git cmake \
             build-essential automake autoconf cmake pkg-config bc m4 unzip zip \
             gcc g++ \
             gcc-i686-linux-gnu g++-i686-linux-gnu \
@@ -35,6 +35,16 @@ jobs:
             gcc-riscv64-linux-gnu g++-riscv64-linux-gnu \
             gcc-powerpc64le-linux-gnu g++-powerpc64le-linux-gnu \
             gcc-s390x-linux-gnu g++-s390x-linux-gnu
+      - name: Get musl cross-compilers
+        run: |
+          for musl_arch in x86_64 aarch64 riscv64; do
+            # We use a musl.cc mirror, see https://github.com/orgs/community/discussions/27906.
+            musl_cc_url="https://github.com/jonatanklosko/musl_cc_mirror/releases/download/20250915-100603"
+            wget "${musl_cc_url}/${musl_arch}-linux-musl-cross.tgz" -O "${musl_arch}-linux-musl-cross.tgz" --no-verbose
+            tar -xf "${musl_arch}-linux-musl-cross.tgz"
+
+            echo "$(pwd)/${musl_arch}-linux-musl-cross/bin" >> $GITHUB_PATH
+          done
       - uses: erlef/setup-beam@v1
         with:
           otp-version: ${{ matrix.otp_version }}

mix.exs

@@ -29,7 +29,41 @@ defmodule LazyHTML.MixProject do
       make_precompiler: {:nif, CCPrecompiler},
       make_precompiler_url: "#{@github_url}/releases/download/v#{@version}/@{artefact_filename}",
       make_precompiler_filename: "liblazy_html",
-      make_precompiler_nif_versions: [versions: ["2.16"]]
+      make_precompiler_nif_versions: [versions: ["2.16"]],
+      cc_precompiler: [
+        # Defaults + musl
+        compilers: %{
+          {:unix, :linux} => %{
+            "x86_64-linux-gnu" => "x86_64-linux-gnu-",
+            "i686-linux-gnu" => "i686-linux-gnu-",
+            "aarch64-linux-gnu" => "aarch64-linux-gnu-",
+            "armv7l-linux-gnueabihf" => "arm-linux-gnueabihf-",
+            "riscv64-linux-gnu" => "riscv64-linux-gnu-",
+            "powerpc64le-linux-gnu" => "powerpc64le-linux-gnu-",
+            "s390x-linux-gnu" => "s390x-linux-gnu-",
+
+            "x86_64-linux-musl" => "x86_64-linux-musl-",
+            "aarch64-linux-musl" => "aarch64-linux-musl-"
+          },
+          {:unix, :darwin} => %{
+            "x86_64-apple-darwin" => {
+              "gcc",
+              "g++",
+              "<%= cc %> -arch x86_64",
+              "<%= cxx %> -arch x86_64"
+            },
+            "aarch64-apple-darwin" => {
+              "gcc",
+              "g++",
+              "<%= cc %> -arch arm64",
+              "<%= cxx %> -arch arm64"
+            }
+          },
+          {:win32, :nt} => %{
+            "x86_64-windows-msvc" => {"cl", "cl"}
+          }
+        }
+      ]
     ]
   end