Add build script wrapper around CMake

.gitignore

@@ -1,3 +1,4 @@
 # Fortran
 *.mod
-*.o
+*.o
+build

build.bash

@@ -0,0 +1,80 @@
+#!/bin/bash
+
+show_help() {
+    cat << EOF
+Usage: ./$(basename "${0}") [OPTIONS]
+
+Build script wrapper around CMake.
+
+Options:
+      --clean   Delete build directory before invoking CMake.
+      --mpi     Compile MPI executable.
+  -d, --debug   Compile in debug mode.
+  -v, --verbose Enable verbose output when building the project.
+  -h, --help    Show this screen.
+
+EOF
+}
+
+# Argument parsing adapted and stolen from http://mywiki.wooledge.org/BashFAQ/035#Complex_nonstandard_add-on_utilities
+while [ $# -gt 0 ]; do
+    case $1 in
+        --clean)
+            clean=1
+            ;;
+        --mpi)
+            mpi=1
+            ;;
+        -d|--debug)
+            debug=1
+            ;;
+        -v|--verbose)
+            verbose=1
+            ;;
+        -h|--help)
+            show_help
+            exit
+            ;;
+        ?*)
+            printf 'WARN: Unknown option (ignored): %s\n' "$1" >&2
+            ;;
+    esac
+    shift
+done
+
+if hostname -f | grep gadi.nci.org.au > /dev/null; then
+    module purge
+    module add intel-compiler/2019.5.281
+    module add netcdf/4.6.3
+    # This is required so that the netcdf-fortran library is discoverable by
+    # pkg-config:
+    module prepend-path PKG_CONFIG_PATH "${NETCDF_BASE}/lib/Intel/pkgconfig/"
+    if [[ -n $mpi ]]; then
+        module add intel-mpi/2019.5.281
+    fi
+fi
+
+if [[ -n $clean ]]; then
+    rm -r build
+fi
+
+cmake_args=()
+
+if [[ -n $debug ]]; then
+    cmake_args+=(-DCMAKE_BUILD_TYPE=Debug)
+else
+    cmake_args+=(-DCMAKE_BUILD_TYPE=Release)
+fi
+
+if [[ -n $mpi ]]; then
+    cmake_args+=(-DCABLE_MPI="ON")
+    cmake_args+=(-DCMAKE_Fortran_COMPILER="mpif90")
+fi
+
+cmake_build_args=()
+if [[ -n $verbose ]]; then
+    cmake_build_args+=(-v)
+fi
+
+cmake -S . -B build "${cmake_args[@]}"
+cmake --build build -j 4 "${cmake_build_args[@]}"