Dynamically link OpenBLAS in linalg example to reduce CI time.

Author: adamreichold

.github/workflows/ci.yml

@@ -151,9 +151,8 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: 3.8
-      - name: Install gfortran
-        run: |
-          sudo apt install -y gfortran
+      - name: Install OpenBLAS
+        run: sudo apt install --yes libopenblas-dev
       - name: Install Rust
         uses: actions-rs/toolchain@v1
         with:

examples/linalg/Cargo.toml

@@ -11,4 +11,4 @@ crate-type = ["cdylib"]
 [dependencies]
 pyo3 = { version = "0.15", features = ["extension-module"] }
 numpy = { path = "../.." }
-ndarray-linalg = { version = "0.14.1", features = ["openblas-static"] }
+ndarray-linalg = { version = "0.14.1", features = ["openblas-system"] }