Updating version of cmake.

Adding netcdf libraries to CI.

Adding libmesh job.

Extending prefix path for libmesh to the  directory.

A couple more tweaks to the libmesh paths.

Updating how libmesh is installed. Relying on MOOSE install scripts.

.github/workflows/ci.yml

@@ -30,6 +30,7 @@ jobs:
         mpi: [n, y]
         omp: [n, y]
         dagmc: [n]
+        libmesh: [n]
         event: [n]
         vectfit: [n]
 
@@ -44,6 +45,10 @@ jobs:
             python-version: 3.8
             mpi: y
             omp: y
+          - libmesh: y
+            python-version: 3.8
+            mpi: y
+            omp: y
           - event: y
             python-version: 3.8
             omp: y
@@ -63,6 +68,7 @@ jobs:
       DAGMC: ${{ matrix.dagmc }}
       EVENT: ${{ matrix.event }}
       VECTFIT: ${{ matrix.vectfit }}
+      LIBMESH: ${{ matrix.libmesh }}
 
     steps:
       -
@@ -73,7 +79,11 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
-
+      -
+        name: Set up CMake
+        uses: jwlawson/actions-setup-cmake@v1.5
+        with:
+          cmake-version: 3.12.x
       -
         name: Environment Variables
         run: |
@@ -88,6 +98,8 @@ jobs:
           sudo apt -y update
           sudo apt install -y mpich \
                               libmpich-dev \
+                              libnetcdf-dev \
+                              libpnetcdf-dev \
                               libhdf5-serial-dev \
                               libhdf5-mpich-dev \
                               libeigen3-dev