Compile doctest library ahead of time

Author: cschreib

tests/CMakeLists.txt

@@ -31,13 +31,15 @@ endfunction()
 
 include(FetchContent)
 
+set(DOCTEST_WITH_MAIN_IN_STATIC_LIB ON)
+set(DOCTEST_NO_INSTALL ON)
+
 FetchContent_Declare(doctest
  GIT_REPOSITORY https://github.com/doctest/doctest.git
  GIT_TAG v2.4.9)
 FetchContent_MakeAvailable(doctest)
 
 set(RUNTIME_TEST_FILES
- ${PROJECT_SOURCE_DIR}/tests/testing.cpp
  ${PROJECT_SOURCE_DIR}/tests/tests_common.cpp
  ${PROJECT_SOURCE_DIR}/tests/memory_tracker.cpp
  ${PROJECT_SOURCE_DIR}/tests/runtime_tests_owner_misc.cpp
@@ -62,7 +64,7 @@ set(RUNTIME_TEST_FILES
 
 add_executable(oup_runtime_tests ${RUNTIME_TEST_FILES})
 target_link_libraries(oup_runtime_tests PRIVATE oup::oup)
-target_link_libraries(oup_runtime_tests PRIVATE doctest::doctest)
+target_link_libraries(oup_runtime_tests PRIVATE doctest::doctest doctest::doctest_with_main)
 add_platform_definitions(oup_runtime_tests)
 
 add_custom_target(oup_runtime_tests_run