attempt to build petsc in azure.

Author: JustinRayAngus

.azure-pipelines.yml

@@ -44,6 +44,9 @@ jobs:
       # Cartesian 2D
       cartesian_2d:
         WARPX_CMAKE_FLAGS: -DWarpX_DIMS=2 -DWarpX_FFT=ON -DWarpX_PYTHON=ON
+      # Cartesian 2D with PETSc
+      cartesian_petsc_2d:
+        WARPX_CMAKE_FLAGS: -DWarpX_DIMS=2 -DWarpX_FFT=OFF -DWarpX_PYTHON=ON -DAMReX_PETSC=YES
       # Cartesian 3D
       cartesian_3d:
         WARPX_CMAKE_FLAGS: -DWarpX_DIMS=3 -DWarpX_FFT=ON -DWarpX_PYTHON=ON
@@ -108,6 +111,18 @@ jobs:
       #    -DopenPMD_USE_PYTHON=OFF -DBUILD_TESTING=OFF -DBUILD_EXAMPLES=OFF -DBUILD_CLI_TOOLS=OFF
       #  #python3 -m pip install --upgrade openpmd-api
       #fi
+      if [ "${AMReX_PETSC:-YES}" == "TRUE" ]; then
+         export warpx_dir=${PWD}
+         export PETSC_DIR=${warpx_dir}/petsc
+         export PETSC_ARCH=arch-opt
+         # clone and configure PETSc
+         cd ${warpx_dir}
+         git clone -b release https://gitlab.com/petsc/petsc.git petsc
+         cd ${PETSC_DIR}
+         ./configure --with-fortran-bindings=no --with-x=no --with-cc=mpicc --with-fc=mpif90 --with-cxx=mpicxx --with-debugging=1 --download-make --download-cmake --download-superlu --download-superlu_dist
+         make -j 4
+         export WARPX_CMAKE_FLAGS="${WARPX_CMAKE_FLAGS} -DPETSC_DIR=${PETSC_DIR} -DPETSC_ARCH=${PETSC_ARCH}"
+      fi
       if [ "${WARPX_RZ_FFT:-FALSE}" == "TRUE" ]; then
         # BLAS++
         cmake-easyinstall --prefix=/usr/local           \
@@ -145,7 +160,7 @@ jobs:
       # display disk space usage
       df -h
       # configure
-      export AMReX_CMAKE_FLAGS="-DAMReX_ASSERTIONS=ON -DAMReX_TESTING=ON -DAMReX_PETSC=YES"
+      export AMReX_CMAKE_FLAGS="-DAMReX_ASSERTIONS=ON -DAMReX_TESTING=ON"
       export WARPX_TEST_FLAGS="-DWarpX_TEST_CLEANUP=ON -DWarpX_TEST_FPETRAP=ON -DWarpX_BACKTRACE_INFO=ON"
       cmake -S . -B build    \
         ${AMReX_CMAKE_FLAGS} \