fix linker error: undefined reference (#707) #1234

	name: gismo

	on:
	# Trigger the workflow on push or pull request,
	# but only for the main branch
	push:
	branches:
	- stable
	pull_request:
	branches:
	- stable
	# Also trigger on page_build, as well as release created events
	page_build:
	release:

	env:
	# Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
	BUILD_TYPE: RelWithDebInfo
	GIT_BRANCH: ${{ github.head_ref \|\| github.ref_name }}

	jobs:
	build:
	name: "Run for ${{ matrix.os }}"
	runs-on: "${{ matrix.os }}"
	strategy:
	fail-fast: false
	matrix:
	os: [windows-latest, macos-latest, ubuntu-latest]
	steps:
	- uses: actions/checkout@v3

	- name: Running ctest
	# Use a bash shell so we can use the same syntax for environment variable
	# access regardless of the host operating system
	shell: bash
	working-directory: ${{runner.workspace}}
	run: \|
	export GIT_COMMIT=$(git -C gismo rev-parse --short "$GITHUB_SHA")
	ctest -S gismo/cmake/ctest_script.cmake -D CTEST_BUILD_NAME="$GITHUB_RUN_NUMBER-${{ matrix.os }}[${{ github.event.number }}]" -D CTEST_SITE="$GIT_BRANCH-$GIT_COMMIT [github]" -D CMAKE_ARGS="-DCMAKE_BUILD_TYPE=$BUILD_TYPE;-DCMAKE_CXX_STANDARD=11;-DGISMO_WITH_XDEBUG=ON;-DGISMO_BUILD_UNITTESTS=ON" -D GISMO_OPTIONAL="gsOpennurbs" -D CTEST_BUILD_JOBS=4 -Q

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