gcc windows #1125

	name: gcc windows

	on:
	push:
	pull_request:
	workflow_dispatch:
	schedule:
	- cron: '20 3 * * *'


	jobs:
	all:
	strategy:
	fail-fast: false
	matrix:
	cpp_version: [c++17, c++20, c++23, c++26]
	# Note: We are never building without optimizations because mingw complains that the object
	# files become too big.
	build_flags: [-O2, -O3 -DNDEBUG, -O3 -DNDEBUG -ffast-math]

	runs-on: windows-2022
	timeout-minutes: 15

	defaults:
	run:
	shell: msys2 {0}

	steps:
	- uses: actions/checkout@v6

	- uses: msys2/setup-msys2@v2.31.1
	with:
	msystem: mingw64
	install: mingw-w64-x86_64-toolchain mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja

	- name: Print compiler version
	run: g++ --version

	- name: Configure
	run: >
	cmake -S . -B build
	-DTINY_OPTIONAL_BUILD_TESTS=ON
	-DCMAKE_BUILD_TYPE=
	-DCMAKE_CXX_COMPILER=g++
	-DTINY_OPTIONAL_ADDITIONAL_FLAGS="${{ format('-Wa,-mbig-obj -std={0} {1}', matrix.cpp_version, matrix.build_flags) }}"

	- name: Build
	run: cmake --build build --parallel

	- name: Run tests
	run: ctest --test-dir build --output-on-failure --parallel

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