Add project files.

source/tests/UndefinedSymbolFixture/CMakeLists.txt

@@ -0,0 +1,21 @@
+# Hand-written rather than add_lib_module(), same reasoning as
+# HotReloadDemo/PluginV1's CMakeLists.txt: this needs to be a plain,
+# always-rebuildable SHARED library gated on BUILD_TESTS rather than a
+# PRIMARY install target.
+
+if(BUILD_TESTS)
+	add_library(hotreload_tests_undefined_symbol_fixture SHARED src/Fixture.cpp)
+else()
+	add_library(hotreload_tests_undefined_symbol_fixture SHARED EXCLUDE_FROM_ALL src/Fixture.cpp)
+endif()
+
+set_target_properties(hotreload_tests_undefined_symbol_fixture PROPERTIES
+	OUTPUT_NAME "hotreload_tests_undefined_symbol_fixture"
+	WINDOWS_EXPORT_ALL_SYMBOLS ON)
+_set_output_dirs(hotreload_tests_undefined_symbol_fixture
+	"${CMAKE_BINARY_DIR}/${RUNTIME_OUTPUT_SUBDIR}/tests"
+	"${CMAKE_BINARY_DIR}/${LIBRARY_OUTPUT_SUBDIR}/tests")
+_apply_compile_options(hotreload_tests_undefined_symbol_fixture)
+
+_register_module_target(TEST hotreload_tests_undefined_symbol_fixture)
+add_dependencies(all_tests hotreload_tests_undefined_symbol_fixture)