GHA: add two Intel compiler CI jobs

Closes #9179

.github/workflows/intel.yml

@@ -0,0 +1,69 @@
+# Copyright (C) 2000 - 2022 Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# SPDX-License-Identifier: curl
+
+name: Linux
+
+on:
+  # Trigger the workflow on push or pull requests, but only for the
+  # master branch
+  push:
+    branches:
+    - master
+    - '*/ci'
+  pull_request:
+    branches:
+    - master
+
+jobs:
+  autotools:
+    name: ${{ matrix.build.name }}
+    runs-on: 'ubuntu-latest'
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        build:
+        - name: Intel compiler - without SSL
+          install: libpsl-dev libbrotli-dev libzstd-dev zlib1g-dev
+          configure: CC=icc --enable-debug --without-ssl
+        - name: Intel compiler - OpenSSL
+          install: libpsl-dev libbrotli-dev libzstd-dev zlib1g-dev libssl-dev
+          configure: CC=icc --enable-debug --with-openssl
+
+    steps:
+    - run: |
+        sudo apt-get update
+        sudo apt-get install libtool autoconf automake pkg-config stunnel4 ${{ matrix.build.install }}
+        sudo python3 -m pip install impacket
+      name: 'install prereqs and impacket'
+
+    - run: |
+        cd /tmp
+        wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+        sudo apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+        rm GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+        sudo add-apt-repository "deb https://apt.repos.intel.com/oneapi all main"
+        sudo apt install --no-install-recommends intel-oneapi-compiler-dpcpp-cpp-and-cpp-classic
+        source /opt/intel/oneapi/setvars.sh
+        printenv >> $GITHUB_ENV
+      name: 'Install Intel compilers'
+
+    - uses: actions/checkout@v3
+
+    - run: autoreconf -fi
+      name: 'autoreconf'
+
+    - run: ./configure --enable-warnings --enable-werror ${{ matrix.build.configure }}
+      name: 'configure'
+
+    - run: make V=1
+      name: 'make'
+
+    - run: make V=1 examples
+      name: 'make examples'
+
+    - run: make V=1 test-ci
+      name: 'test'
+      env:
+        TFLAGS: "${{ matrix.build.tflags }}"