ci: Build and release dkml and with-dkml

Part of diskuv/dkml-installer-ocaml#80

.github/workflows/dkml.yml

@@ -121,3 +121,39 @@ jobs:
       - name: Teardown DkML compilers on a Linux host
         if: startsWith(matrix.dkml_host_abi, 'linux_')
         uses: ./.ci/dkml-compilers/gh-linux/post
+
+      # Upload artifact
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: ${{ matrix.dkml_host_abi }}
+          path: dist/
+
+  #--------
+  # Release
+  #--------
+
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # Needed for softprops/action-gh-release@v1
+    # Wait until `build` complete
+    needs:
+      - build
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - uses: actions/download-artifact@v3
+        with:
+          path: dist
+
+      - name: Restructure multi-ABI directories
+        run: ci/prepare-release.sh
+
+      - name: Release (only when Git tag pushed)
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: |
+            _release/*

ci/build-test.sh

@@ -43,12 +43,19 @@ if [ -x /usr/bin/cygpath ]; then
     PROJECT_DIR=$(/usr/bin/cygpath -au "$PROJECT_DIR")
 fi
 
+dkml_version=$(cat "$PROJECT_DIR/src/runtimelib/version.txt")
+
 # shellcheck disable=SC2154
 echo "
 =============
 build-test.sh
 =============
 .
+----
+DkML
+----
+$dkml_version
+.
 ---------
 Arguments
 ---------
@@ -78,6 +85,56 @@ opamrun exec -- ocamlc -config
 # Update
 opamrun update
 
+# Reset repository to match the current version of DkML, not the dkml-workflows' version
+opamrun repository remove diskuv --all || true
+opamrun repository add diskuv "git+https://github.com/diskuv/diskuv-opam-repository.git#$dkml_version"
+
 # Make your own build logic! It may look like ...
 opamrun install . --deps-only --with-test --yes
-opamrun exec -- dune runtest
+case "$dkml_host_abi" in
+darwin_x86_64)
+    toolchain=darwin_arm64;;
+*)
+    toolchain=''
+esac
+if [ -n "$toolchain" ]; then
+    opamrun exec -- dune build -x "$toolchain"
+else
+    opamrun exec -- dune build
+fi
+
+# ------------ Verbatim from diskuvbox (plus for OPAM_PKGNAME loop) --------------
+
+# Prereq: Diagnostics
+case "${dkml_host_abi}" in
+linux_*)
+    if command -v apk; then
+        apk add file
+    fi ;;
+esac
+
+# Copy the installed binaries (including cross-compiled ones) from Opam into dist/ folder.
+# Name the binaries with the target ABI since GitHub Releases are flat namespaces.
+install -d dist/
+mv _build/install/default "_build/install/default.${dkml_host_abi}"
+set +f
+for OPAM_PKGNAME in dkml with-dkml; do
+for i in _build/install/default.*; do
+  target_abi=$(basename "$i" | sed s/default.//)
+  if [ -e "_build/install/default.${target_abi}/bin/${OPAM_PKGNAME}.exe" ]; then
+    install -v "_build/install/default.${target_abi}/bin/${OPAM_PKGNAME}.exe" "dist/${target_abi}-${OPAM_PKGNAME}.exe"
+    file "dist/${target_abi}-${OPAM_PKGNAME}.exe"
+  else
+    install -v "_build/install/default.${target_abi}/bin/${OPAM_PKGNAME}" "dist/${target_abi}-${OPAM_PKGNAME}"
+    file "dist/${target_abi}-${OPAM_PKGNAME}"
+  fi
+done
+done
+
+# For Windows you must ask your users to first install the vc_redist executable.
+# Confer: https://github.com/diskuv/dkml-workflows#distributing-your-windows-executables
+case "${dkml_host_abi}" in
+windows_x86_64) wget -O dist/vc_redist.x64.exe https://aka.ms/vs/17/release/vc_redist.x64.exe ;;
+windows_x86) wget -O dist/vc_redist.x86.exe https://aka.ms/vs/17/release/vc_redist.x86.exe ;;
+windows_arm64) wget -O dist/vc_redist.arm64.exe https://aka.ms/vs/17/release/vc_redist.arm64.exe ;;
+esac

ci/prepare-release.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+# ------------ Verbatim from diskuvbox --------------
+set -euf
+
+# Restructure multi-ABI directories
+_release="$(pwd)/_release"
+install -d "$_release"
+
+cd dist
+find . -mindepth 1 -maxdepth 1 -type d | while read -r distname; do
+    rsync -av "$distname/" "$_release"
+done
+cd ..
+
+# Display files to be distributed
+cd _release
+ls -R
+cd ..