github actions making build on macos

.github/workflows/macos.yml

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+name: Build ForeFire on macOS
+
+on:
+  push:
+    branches:
+      - brew-macos
+
+  workflow_dispatch:
+
+jobs:
+  build-native-macos:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Make install script executable
+        run: chmod +x ./install-forefire-osx.sh
+
+      - name: Build ForeFire using macOS install script
+        run: ./install-forefire-osx.sh
+
+      - name: Check ForeFire version
+        run: ./bin/forefire -v

install-forefire-osx.sh

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+#!/bin/bash
+set -e
+echo "====== MAC OS REQUIREMENTS ========"
+
+# Update Homebrew.
+brew update
+
+# Ensure Xcode Command Line Tools are installed.
+if ! xcode-select -p > /dev/null 2>&1; then
+    echo "Xcode Command Line Tools not found. Installing..."
+    xcode-select --install
+fi
+
+# Install dependencies via Homebrew.
+brew install cmake
+brew install netcdf
+brew install netcdf-cxx
+
+# Set NETCDF_HOME to the prefix for the NetCDF C library.
+export NETCDF_HOME=$(brew --prefix netcdf)
+echo "NETCDF_HOME set to $NETCDF_HOME"
+
+# Set NETCDF_CXX_HOME to the prefix for the NetCDF C++ library.
+export NETCDF_CXX_HOME=$(brew --prefix netcdf-cxx)
+echo "NETCDF_CXX_HOME set to $NETCDF_CXX_HOME"
+
+# Debug: list headers in NETCDF_HOME/include
+echo "Contents of $NETCDF_HOME/include:"
+ls -l "$NETCDF_HOME/include"
+
+# Create a symlink in NETCDF_HOME/include so that "netcdf" points to "netcdf.h"
+cd "$NETCDF_HOME/include"
+if [ ! -e netcdf ]; then
+    echo "Creating symlink for netcdf -> netcdf.h"
+    ln -s netcdf.h netcdf
+else
+    echo "Symlink for netcdf already exists."
+fi
+cd - > /dev/null
+
+# Debug: list the contents of NETCDF_CXX_HOME/lib
+cd "$NETCDF_CXX_HOME/lib"
+echo "Contents of $NETCDF_CXX_HOME/lib:"
+ls -l
+
+# Determine target library name.
+target=""
+if [ -e libnetcdf-cxx4.dylib ]; then
+    target="libnetcdf-cxx4.dylib"
+elif [ -e libnetcdf-cxx.dylib ]; then
+    target="libnetcdf-cxx.dylib"
+else
+    echo "Error: Neither libnetcdf-cxx4.dylib nor libnetcdf-cxx.dylib found in $NETCDF_CXX_HOME/lib"
+    exit 1
+fi
+
+echo "Using target library: $target"
+if [ ! -e libnetcdf_c++4.dylib ]; then
+    echo "Creating symlink: libnetcdf_c++4.dylib -> $target"
+    ln -s "$target" libnetcdf_c++4.dylib
+else
+    echo "Symlink libnetcdf_c++4.dylib already exists."
+fi
+echo "Contents after symlink creation:"
+ls -l
+cd - > /dev/null
+
+# Set LIBRARY_PATH for the linker.
+export LIBRARY_PATH=$NETCDF_CXX_HOME/lib:$LIBRARY_PATH
+echo "LIBRARY_PATH set to: $LIBRARY_PATH"
+
+echo "==========================="
+echo "========= FOREFIRE ========"
+echo "==========================="
+
+# Create build directory, configure, and compile ForeFire.
+mkdir -p build
+cd build
+
+# Pass include flags for both netcdf-cxx and netcdf,
+# and add the netcdf-cxx lib directory to the shared linker flags.
+cmake -D NETCDF_HOME=$NETCDF_HOME \
+      -DCMAKE_CXX_FLAGS="-I$NETCDF_CXX_HOME/include -I$NETCDF_HOME/include" \
+      -DCMAKE_SHARED_LINKER_FLAGS="-L$NETCDF_CXX_HOME/lib" \
+      ../
+make