set OPENSSL_DIR for Linux builds

Author: lordlou

.github/workflows/build-github-actions.yml

@@ -91,6 +91,8 @@ jobs:
           submodules: 'true'
       - name: Install OpenSSL
         run: sudo apt-get update && sudo apt-get install -y libssl-dev
+      - name: Set OPENSSL_DIR
+        run: echo "OPENSSL_DIR=/usr" >> $GITHUB_ENV
       - name: Build x86_64 wheels
         uses: PyO3/maturin-action@v1
         if: ${{ matrix.target == 'x86_64' }}

.github/workflows/manual-build-github-actions.yml

@@ -80,6 +80,8 @@ jobs:
   #          submodules: 'true'
   #     - name: Install OpenSSL
   #       run: sudo apt-get update && sudo apt-get install -y libssl-dev
+  #     - name: Set OPENSSL_DIR
+  #       run: echo "OPENSSL_DIR=/usr" >> $GITHUB_ENV
   #     - name: Build wheels
   #       uses: PyO3/maturin-action@v1
   #       with: