Add tag workflow (#136)

Author: wsmoses

.github/workflows/tagger.yml

@@ -0,0 +1,50 @@
+name: Tag CI
+
+on: [release]
+
+jobs:
+  build:
+    name: Enzyme Tag CI
+    runs-on: ubuntu-latest
+    steps:
+    - uses: tibdex/github-app-token@v1
+      id: generate_token
+      with:
+        app_id: ${{ secrets.APP_ID }}
+        private_key: ${{ secrets.APP_PRIVATE_KEY }}
+        repository: JuliaPackaging/Yggdrasil
+
+    - uses: actions/checkout@v2
+      with:
+          repository: 'JuliaPackaging/Yggdrasil'
+          fetch-depth: 1
+          path: ygg
+
+    - uses: actions/checkout@v2
+      with:
+          fetch-depth: 1
+          path: enz
+    - name: replace
+      run: |
+          cd ygg
+          git rm -rf E/Enzyme
+          mkdir -p E/Enzyme/Enzyme@9
+          cd E/Enzyme
+          cp ../../../enz/.packaging/build_tarballs.jl Enzyme@9/build_tarballs.jl
+          sed "s~%ENZYME_VERSION%~${GITHUB_REF}~g" Enzyme@9/build_tarballs.jl -i
+          sed "s~%ENZYME_HASH%~${GITHUB_SHA}~g" Enzyme@9/build_tarballs.jl -i
+          git add Enzyme@9
+    - name: Create Pull Request
+      id: cpr
+      uses: peter-evans/create-pull-request@v3
+      with:
+        path: ygg
+        commit-message: "Upgrade enzyme to ${{ github.ref }}"
+        title: "Upgrade enzyme to ${{ github.ref }}"
+        token: ${{ steps.generate_token.outputs.token }}
+        reviewers: vchuravy
+        branch: enzyme/${{ github.ref }}
+    - name: Check outputs
+      run: |
+        echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
+        echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"

.packaging/build_tarballs.jl

@@ -0,0 +1,52 @@
+using BinaryBuilder, Pkg
+
+name = "Enzyme"
+repo = "https://github.com/wsmoses/Enzyme.git"
+
+auto_version = "%ENZYME_VERSION%"
+version = VersionNumber(split(auto_version, "/")[end])
+
+# Collection of sources required to build attr
+sources = [GitSource(repo, "%ENZYME_HASH%")]
+
+# These are the platforms we will build for by default, unless further
+# platforms are passed in on the command line
+platforms = expand_cxxstring_abis(supported_platforms())
+
+# Bash recipe for building across all platforms
+script = raw"""
+cd Enzyme
+# install_license LICENSE.TXT
+CMAKE_FLAGS=()
+# Release build for best performance
+CMAKE_FLAGS+=(-DENZYME_EXTERNAL_SHARED_LIB=ON)
+CMAKE_FLAGS+=(-DCMAKE_BUILD_TYPE=RelWithDebInfo)
+# Install things into $prefix
+CMAKE_FLAGS+=(-DCMAKE_INSTALL_PREFIX=${prefix})
+# Explicitly use our cmake toolchain file and tell CMake we're cross-compiling
+CMAKE_FLAGS+=(-DCMAKE_TOOLCHAIN_FILE=${CMAKE_TARGET_TOOLCHAIN})
+CMAKE_FLAGS+=(-DCMAKE_CROSSCOMPILING:BOOL=ON)
+# Tell CMake where LLVM is
+CMAKE_FLAGS+=(-DLLVM_DIR="${prefix}/lib/cmake/llvm")
+# Force linking against shared lib
+CMAKE_FLAGS+=(-DLLVM_LINK_LLVM_DYLIB=ON)
+# Build the library
+CMAKE_FLAGS+=(-DBUILD_SHARED_LIBS=ON)
+cmake -B build -S enzyme -GNinja ${CMAKE_FLAGS[@]}
+ninja -C build -j ${nproc} install
+"""
+
+# The products that we will ensure are always built
+products = Product[
+    LibraryProduct(["libEnzyme-9", "libEnzyme"], :libEnzyme),
+]
+
+dependencies = [
+    BuildDependency(PackageSpec(name="LLVM_full_jll", version=v"9.0.1")),
+#    Dependency(PackageSpec(name="libLLVM_jll", version=v"9.0.1"))
+]
+
+
+# Build the tarballs.
+build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies;
+               preferred_gcc_version=v"8", julia_compat="1.5")