Merge pull request #29 from Enet4/ci-gh-actions

Add GitHub Actions CI

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+    steps:
+    - uses: actions/checkout@v2
+    - name: Cache Faiss shared objects
+      uses: actions/cache@v2
+      with:
+        path: ~/.faiss_c
+        key: ${{ runner.os }}-build-${{ env.cache-name }}1
+    - name: Download and build Faiss
+      run: ./faiss-sys/ci/install_faiss_c.sh
+    - name: Install Faiss
+      run: sudo cp $HOME/.faiss_c/lib*.so /usr/lib/
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose

faiss-sys/ci/install_faiss_c.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+set -eu
+
+repo_url=https://github.com/Enet4/faiss.git
+repo_rev=c_api_head
+
+git clone $repo_url faiss --branch $repo_rev --depth 1
+
+mkdir -p "$HOME/.faiss_c"
+
+cd faiss
+
+git rev-parse HEAD > ../rev_hash
+
+if [[ -s "$HOME/.faiss_c/rev_hash" && `diff -w -q ../rev_hash $HOME/.faiss_c/rev_hash` -eq "0" ]]; then
+    echo "libfaiss_c.so is already built for revision" `cat ../rev_hash`
+
+    # clean up
+    cd ..
+    rm -rf faiss rev_hash
+    exit 0
+fi
+
+
+# Build
+cmake . -DFAISS_ENABLE_C_API=ON -DBUILD_SHARED_LIBS=ON \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DFAISS_ENABLE_GPU=OFF -DFAISS_ENABLE_PYTHON=OFF -DBUILD_TESTING=OFF
+
+make
+cp -f "../rev_hash" faiss/libfaiss.so c_api/libfaiss_c.so "$HOME/.faiss_c/"
+
+echo "libfaiss_c.so (" `cat ../rev_hash` ") installed in $HOME/.faiss_c/"
+
+cd ..
+
+# clean up
+rm -rf faiss rev_hash