CI: Enabled parallel builds with Make

kvrigor · kvrigor · commit 036d64e2687e · 2025-02-19T09:33:41.000+01:00
diff --git a/.github/workflows/deploy-book.yml b/.github/workflows/deploy-book.yml
@@ -21,6 +21,7 @@ jobs:
 
     env:
       FC: gfortran-14
+      MAKEFLAGS: -j4
 
     name: ${{ matrix.os }} / Python ${{ matrix.python-version }}
 
