examples/executable_dll_and_plugin/dll.cpp

#define DOCTEST_CONFIG_IMPLEMENTATION_IN_DLL
#include <doctest/doctest.h>

DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_BEGIN
#include <iostream>
DOCTEST_MAKE_STD_HEADERS_CLEAN_FROM_WARNINGS_ON_WALL_END

TEST_CASE("dll") {
    std::cout << "I am a test from the dll!\n";
    CHECK(true);
    CHECK(doctest::IsNaN<long double>(0.1L));
}

DOCTEST_SYMBOL_EXPORT void from_dll();   // to silence "-Wmissing-declarations" with GCC
DOCTEST_SYMBOL_EXPORT void from_dll() {} // force the creation of a .lib file with MSVC