GH: Waku windows build configuration (#432)

* Update binutils for windows

* Create mingw-env action and move configuration there

* Use cc and cxx vars for gowaku

* Use go 1.20 for waku

.github/actions/mingw-env/action.yml

@@ -0,0 +1,22 @@
+# Adapting https://github.com/microsoft/windows-rs/blob/master/.github/actions/fix-environment/action.yml
+# for waku windows builds to use desired binutils version.
+name: Fix environment
+description: GitHub VMs aren't configured correctly
+runs:
+  using: "composite"
+  steps:
+    - name: Update binutils (Windows)
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: mingw64
+        update: true
+        pacboy: binutils
+    - name: Configure CC and CXX for GNU
+      shell: pwsh
+      run: |
+        "CC=x86_64-w64-mingw32-gcc" >> $env.GITHUB_ENV
+        "CXX=x86_64-w64-mingw32-g++" >> $env.GITHUB_ENV
+    - name: Configure environment
+      shell: pwsh
+      run: |
+        "C:\msys64\mingw64\bin" >> $env:GITHUB_PATH

.github/workflows/pr.yml

@@ -44,7 +44,7 @@ jobs:
           submodules: true
       - uses: actions/setup-go@v3 # we need go to build go-waku
         with:
-          go-version: '1.19'
+          go-version: '1.20'
       # Setup Rust toolchain with GNU for Windows
       - name: Setup Rust with GNU toolchain (Windows)
         if: matrix.os == 'windows-latest'
@@ -61,6 +61,10 @@ jobs:
           profile: minimal
           toolchain: stable
           override: true
+      # Setup build environment (Windows)
+      - name: Setup build environment (Windows)
+        if: matrix.os == 'windows-latest'
+        uses: ./.github/actions/mingw-env
       - uses: actions-rs/cargo@v1
         with:
           command: build