Add LIBRARY_PATH

Author: termoshtt

.github/workflows/openblas.yml

@@ -48,13 +48,12 @@ jobs:
       - uses: actions/checkout@v1
         with:
           submodules: 'recursive'
-      - name: Install GCC by homebrew
-        run: |
-          brew install gcc
       - name: Install OpenBLAS by homebrew
         run: |
           brew install openblas
         if: ${{ contains(matrix.feature, 'system') }}
+      - run: |
+          export LIBRARY_PATH=$(readlink -f $(dirname $(gfortran -print-file-name libgfortran.a)))
       - uses: actions-rs/cargo@v1
         with:
           command: test