Catch.cmake: Support CMake multi-config with PRE_TEST discovery mode #1618

	name: Mac builds

	on: [push, pull_request]

	jobs:
	build:
	# macos-12 updated to a toolchain that crashes when linking the
	# test binary. This seems to be a known bug in that version,
	# and will eventually get fixed in an update. After that, we can go
	# back to newer macos images.
	runs-on: macos-11
	strategy:
	matrix:
	cxx:
	- g++-11
	- clang++
	build_type: [Debug, Release]
	std: [14, 17]
	include:
	- build_type: Debug
	examples: ON
	extra_tests: ON

	steps:
	- uses: actions/checkout@v2

	- name: Configure build
	working-directory: ${{runner.workspace}}
	env:
	CXX: ${{matrix.cxx}}
	CXXFLAGS: ${{matrix.cxxflags}}
	# Note: $GITHUB_WORKSPACE is distinct from ${{runner.workspace}}.
	# This is important
	run: \|
	cmake -Bbuild -H$GITHUB_WORKSPACE \
	-DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
	-DCMAKE_CXX_STANDARD=${{matrix.std}} \
	-DCMAKE_CXX_STANDARD_REQUIRED=ON \
	-DCATCH_DEVELOPMENT_BUILD=ON \
	-DCATCH_BUILD_EXAMPLES=${{matrix.examples}} \
	-DCATCH_BUILD_EXTRA_TESTS=${{matrix.examples}}

	- name: Build tests + lib
	working-directory: ${{runner.workspace}}/build
	run: make -j 2

	- name: Run tests
	env:
	CTEST_OUTPUT_ON_FAILURE: 1
	working-directory: ${{runner.workspace}}/build
	# Hardcode 2 cores we know are there
	run: ctest -C ${{matrix.build_type}} -j 2

Provide feedback