Improve release workflow to build in the main branch (#50)

Also update macos to prevent compile errors.

Author: philss

.github/workflows/release.yml

@@ -1,18 +1,21 @@
-name: Build release
+name: Build precompiled NIFs
 
 env:
-  MIN_SUPPORTED_RUST_VERSION: "1.55.0"
+  NIF_DIRECTORY: "native/html5ever_nif"
 
 on:
   push:
+    branches:
+      - main
+      - master
     tags:
       - '*'
 
 defaults:
   run:
     # Sets the working dir for "run" scripts.
     # Note that this won't change the directory for actions (tasks with "uses").
-    working-directory: ./native/html5ever_nif
+    working-directory: "./native/html5ever_nif"
 
 jobs:
   build_release:
@@ -25,26 +28,26 @@ jobs:
           # NIF version 2.16
           - { target: arm-unknown-linux-gnueabihf , os: ubuntu-20.04 , nif: "2.16", use-cross: true }
           - { target: aarch64-unknown-linux-gnu   , os: ubuntu-20.04 , nif: "2.16", use-cross: true }
-          - { target: aarch64-apple-darwin        , os: macos-10.15  , nif: "2.16" }
-          - { target: x86_64-apple-darwin         , os: macos-10.15  , nif: "2.16" }
+          - { target: aarch64-apple-darwin        , os: macos-11     , nif: "2.16" }
+          - { target: x86_64-apple-darwin         , os: macos-11     , nif: "2.16" }
           - { target: x86_64-unknown-linux-gnu    , os: ubuntu-20.04 , nif: "2.16" }
           - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04 , nif: "2.16", use-cross: true }
           - { target: x86_64-pc-windows-gnu       , os: windows-2019 , nif: "2.16" }
           - { target: x86_64-pc-windows-msvc      , os: windows-2019 , nif: "2.16" }
           # NIF version 2.15
           - { target: arm-unknown-linux-gnueabihf , os: ubuntu-20.04 , nif: "2.15", use-cross: true }
           - { target: aarch64-unknown-linux-gnu   , os: ubuntu-20.04 , nif: "2.15", use-cross: true }
-          - { target: aarch64-apple-darwin        , os: macos-10.15  , nif: "2.15" }
-          - { target: x86_64-apple-darwin         , os: macos-10.15  , nif: "2.15" }
+          - { target: aarch64-apple-darwin        , os: macos-11     , nif: "2.15" }
+          - { target: x86_64-apple-darwin         , os: macos-11     , nif: "2.15" }
           - { target: x86_64-unknown-linux-gnu    , os: ubuntu-20.04 , nif: "2.15" }
           - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04 , nif: "2.15", use-cross: true }
           - { target: x86_64-pc-windows-gnu       , os: windows-2019 , nif: "2.15" }
           - { target: x86_64-pc-windows-msvc      , os: windows-2019 , nif: "2.15" }
           # NIF version 2.14
           - { target: arm-unknown-linux-gnueabihf , os: ubuntu-20.04 , nif: "2.14", use-cross: true }
           - { target: aarch64-unknown-linux-gnu   , os: ubuntu-20.04 , nif: "2.14", use-cross: true }
-          - { target: aarch64-apple-darwin        , os: macos-10.15  , nif: "2.14" }
-          - { target: x86_64-apple-darwin         , os: macos-10.15  , nif: "2.14" }
+          - { target: aarch64-apple-darwin        , os: macos-11     , nif: "2.14" }
+          - { target: x86_64-apple-darwin         , os: macos-11     , nif: "2.14" }
           - { target: x86_64-unknown-linux-gnu    , os: ubuntu-20.04 , nif: "2.14" }
           - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04 , nif: "2.14", use-cross: true }
           - { target: x86_64-pc-windows-gnu       , os: windows-2019 , nif: "2.14" }
@@ -88,6 +91,7 @@ jobs:
         rustup default
         cargo -V
         rustc -V
+        rustc --print=cfg
 
     - name: Download cross from GitHub releases
       uses: giantswarm/[email protected]
@@ -144,7 +148,6 @@ jobs:
           *-apple-darwin) LIB_FINAL_SUFFIX=".so" ;;
         esac;
 
-        # Check Html5ever.Precompiled.target/0 - lib/html5ever/precompiled.ex 
         LIB_FINAL_NAME="${LIB_PREFIX}${PROJECT_NAME}-v${PROJECT_VERSION}-nif-${RUSTLER_NIF_VERSION}-${{ matrix.job.target }}${LIB_FINAL_SUFFIX}"
 
         # Copy lib to final name on this directory
@@ -153,7 +156,7 @@ jobs:
         tar -cvzf "${LIB_FINAL_NAME}.tar.gz" "${LIB_FINAL_NAME}"
 
         # Passes the path relative to the root of the project.
-        LIB_FINAL_PATH="native/html5ever_nif/${LIB_FINAL_NAME}.tar.gz"
+        LIB_FINAL_PATH="${NIF_DIRECTORY}/${LIB_FINAL_NAME}.tar.gz"
 
         # Let subsequent steps know where to find the lib
         echo ::set-output name=LIB_FINAL_PATH::${LIB_FINAL_PATH}
@@ -170,3 +173,4 @@ jobs:
       with:
         files: |
           ${{ steps.rename.outputs.LIB_FINAL_PATH }}
+      if: startsWith(github.ref, 'refs/tags/')