fix CI build #225

	name: CI

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build_linux:
	runs-on: ubuntu-latest
	steps:
	- name: Download deps
	run: sudo apt-get update && sudo apt-get install libx11-dev libxext-dev libxft-dev libxinerama-dev libxcursor-dev libxrender-dev libxfixes-dev libpango1.0-dev libgl1-mesa-dev libglu1-mesa-dev
	shell: bash
	- uses: actions/checkout@v2
	- uses: goto-bus-stop/setup-zig@v2
	with:
	version: 0.12.0
	- name: Build
	run: zig build -Dzfltk-use-zigcc=true
	build_macos:
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v2
	- uses: goto-bus-stop/setup-zig@v2
	with:
	version: 0.12.0
	- name: Build
	run: zig build -Dzfltk-use-zigcc=true
	build_windows-mingw:
	runs-on: windows-latest
	steps:
	- uses: actions/checkout@v2
	- uses: msys2/setup-msys2@v2
	with:
	msystem: MINGW64
	update: true
	- shell: msys2 {0}
	run: \|
	pacman -Sy
	pacman --noconfirm -S $MINGW_PACKAGE_PREFIX-cmake $MINGW_PACKAGE_PREFIX-gcc $MINGW_PACKAGE_PREFIX-ninja wget unzip git --needed
	wget https://ziglang.org/builds/zig-windows-x86_64-0.12.0.zip
	unzip -qq zig-windows-x86_64-0.12.0.zip
	git submodule update --init --recursive
	zig-windows-x86_64-0.12.0/zig build --search-prefix $MINGW_PREFIX
	# build_windows:
	# runs-on: windows-latest
	# steps:
	# - uses: actions/checkout@v2
	# - uses: goto-bus-stop/setup-zig@v2
	# with:
	# version: 0.12.0
	# - uses: seanmiddleditch/gha-setup-ninja@master
	# - name: build
	# shell: bash
	# run: zig build

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