Windows: Header-only mode with multiple translation units requires BOOST_TEST_NO_LIB

[valiko-ua]

According to documentation, BOOST_TEST_NO_LIB macro is not required when building multiple translation units in header-only mode, but I get the following error on Windows:

1>------ Rebuild All started: Project: MyTest, Configuration: Debug x64 ------
1>test_main.cpp
1>test2.cpp
1>Generating Code...
1>LINK : fatal error LNK1104: cannot open file 'libboost_unit_test_framework-vc142-mt-gd-x64-1_72.lib'
1>Done building project "MyTest.vcxproj" -- FAILED.
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========

Defining BOOST_TEST_NO_LIB macro in all additional translation units (the ones that include boost/test/unit_test.hpp) fixes the problem. If boost/test/detail/config.hpp cannot be enhanced somehow to fix this problem, then documentation should mention that BOOST_TEST_NO_LIB macro is required for the described case in all additional translation units (or just in all translation units).

There is no problem when project contains only one translation unit (which includes boost/test/included/unit_test.hpp).

Minimum example

Linker settings should not contain path to boost binary libraries to reproduce this problem.
File test_main.cpp:

#define BOOST_TEST_MODULE My Test
#include <boost/test/included/unit_test.hpp>

BOOST_AUTO_TEST_CASE(test1)
{
    int i = 1;
    BOOST_TEST(i == 1);
    BOOST_TEST(i == 2);
}

File test2.cpp:

//#define BOOST_TEST_NO_LIB // uncomment this line to fix link error
#include <boost/test/unit_test.hpp>

BOOST_AUTO_TEST_CASE(test2)
{
    int i = 2;
    BOOST_TEST(i == 1);
    BOOST_TEST(i == 2);
}

[raffienficiaud]

This is odd because there is a unit test covering this case on Windows: https://github.com/boostorg/test/blob/develop/test/Jamfile.v2#L137
Do you know what is defining BOOST_TEST_NO_LIB ?

Ok, now I think I know why the tests are not catching the issue. Thanks for the report

[raffienficiaud]

Fix available on branch topic/GH-263-header-variant-test-no-lib. If you have some time, it would be nice if you can give a try.

[valiko-ua]

The fix works, thanks!

[raffienficiaud]

Thanks for the quick feedback!

[raffienficiaud]

Fix in master