macOS

Add the `EN_loadpatternfile` function to load pattern data from a `.pat` file into INP #73

	name: macOS

	on:
	push:
	pull_request:
	schedule:
	- cron: '0 0 1 * *'

	jobs:
	build:
	runs-on: macos-latest
	strategy:
	fail-fast: false

	steps:
	- uses: actions/checkout@v4

	- name: Setup build directory
	run: mkdir buildproducts

	- name: CMake
	working-directory: ./buildproducts
	run: \|
	retry=0
	max_retries=3
	until cmake ..; do
	((retry++))
	echo "Retry $retry/$max_retries..."
	if [ "$retry" -ge "$max_retries" ]; then
	echo "CMake configuration failed after $max_retries attempts."
	exit 1
	fi
	sleep 10
	done

	- name: Make
	working-directory: ./buildproducts
	run: \|
	retry=0
	max_retries=3
	until make; do
	((retry++))
	echo "Retry $retry/$max_retries..."
	if [ "$retry" -ge "$max_retries" ]; then
	echo "Make build failed after $max_retries attempts."
	exit 1
	fi
	sleep 10
	done

	- name: Copy header files to build directory
	run: \|
	cp include/epanet2.h buildproducts/
	cp include/epanet2_2.h buildproducts/
	cp include/epanet2_enums.h buildproducts/

	- uses: actions/upload-artifact@v4
	with:
	name: libepanet-output
	path: buildproducts/

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