From 1569a43f7e610fca5d551793e5c06fe5b81aee62 Mon Sep 17 00:00:00 2001
From: Jiaxun Yang <jiaxun.yang@flygoat.com>
Date: Mon, 8 Aug 2022 20:14:05 +0100
Subject: [PATCH] GitHub Actions: Add cross compile tests

Add cross compile tests without running checks. Currently
only mips64el, riscv64, mipsel, alpha is wired up.
Just help us make sure those less popular CPUs are not
messed up by changes.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 .github/workflows/dynamic_arch.yml | 50 ++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/.github/workflows/dynamic_arch.yml b/.github/workflows/dynamic_arch.yml
index 153c63045..c34b0c462 100644
--- a/.github/workflows/dynamic_arch.yml
+++ b/.github/workflows/dynamic_arch.yml
@@ -257,3 +257,53 @@ jobs:
       - name: Run tests
         timeout-minutes: 60
         run: cd build && ctest
+
+  cross_build:
+    runs-on: ubuntu-22.04
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: mips64el
+            triple: mips64el-linux-gnuabi64
+            opts: DYNAMIC_ARCH=1
+          - target: riscv64
+            triple: riscv64-linux-gnu
+            opts: TARGET=RISCV64_GENERIC
+          - target: mipsel
+            triple: mipsel-linux-gnu
+            opts: TARGET=MIPS1004K
+          - target: alpha
+            triple: alpha-linux-gnu
+            opts: TARGET=EV4
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install Dependencies
+        run: |
+          sudo apt-get install -y ccache gcc-${{ matrix.triple }} gfortran-${{ matrix.triple }} libgomp1-${{ matrix.target }}-cross
+
+      - name: Compilation cache
+        uses: actions/cache@v3
+        with:
+          path: ~/.ccache
+          key: ccache-${{ runner.os }}-${{ matrix.target }}-${{ github.ref }}-${{ github.sha }}
+          restore-keys: |
+            ccache-${{ runner.os }}-${{ matrix.target }}-${{ github.ref }}
+            ccache-${{ runner.os }}-${{ matrix.target }}
+
+      - name: Configure ccache
+        run: |
+          # Limit the maximum size and switch on compression to avoid exceeding the total disk or cache quota (5 GB).
+          test -d ~/.ccache || mkdir -p ~/.ccache
+          echo "max_size = 300M" > ~/.ccache/ccache.conf
+          echo "compression = true" >> ~/.ccache/ccache.conf
+          ccache -s
+
+
+      - name: Build OpenBLAS
+        run: |
+          make -j$(nproc) HOSTCC="ccache gcc" CC="ccache ${{ matrix.triple }}-gcc" FC="ccache ${{ matrix.triple }}-gfortran" ARCH=${{ matrix.target }} ${{ matrix.opts }}