def test_guessed_linker_dependencies(self):
        '''
        Test that meson adds dependencies for libraries based on the final
        linker command line.
        '''
        testdirbase = os.path.join(self.unit_test_dir, '29 guessed linker dependencies')
        testdirlib = os.path.join(testdirbase, 'lib')

        extra_args = None
        libdir_flags = ['-L']
        env = get_fake_env(testdirlib, self.builddir, self.prefix)
        if detect_c_compiler(env, MachineChoice.HOST).get_id() in {'msvc', 'clang-cl', 'intel-cl'}:
            # msvc-like compiler, also test it with msvc-specific flags
            libdir_flags += ['/LIBPATH:', '-LIBPATH:']
        else:
            # static libraries are not linkable with -l with msvc because meson installs them
            # as .a files which unix_args_to_native will not know as it expects libraries to use
            # .lib as extension. For a DLL the import library is installed as .lib. Thus for msvc
            # this tests needs to use shared libraries to test the path resolving logic in the
            # dependency generation code path.
            extra_args = ['--default-library', 'static']

        initial_builddir = self.builddir
        initial_installdir = self.installdir

        for libdir_flag in libdir_flags:
            # build library
            self.new_builddir()
            self.init(testdirlib, extra_args=extra_args)
            self.build()
            self.install()
            libbuilddir = self.builddir
            installdir = self.installdir
            libdir = os.path.join(self.installdir, self.prefix.lstrip('/').lstrip('\\'), 'lib')

            # build user of library
            self.new_builddir()
            # replace is needed because meson mangles platform paths passed via LDFLAGS
            self.init(os.path.join(testdirbase, 'exe'),
                      override_envvars={"LDFLAGS": '{}{}'.format(libdir_flag, libdir.replace('\\', '/'))})
            self.build()
            self.assertBuildIsNoop()

            # rebuild library
            exebuilddir = self.builddir
            self.installdir = installdir
            self.builddir = libbuilddir
            # Microsoft's compiler is quite smart about touching import libs on changes,
            # so ensure that there is actually a change in symbols.
            self.setconf('-Dmore_exports=true')
            self.build()
            self.install()
            # no ensure_backend_detects_changes needed because self.setconf did that already

            # assert user of library will be rebuild
            self.builddir = exebuilddir
            self.assertRebuiltTarget('app')

            # restore dirs for the next test case
            self.installdir = initial_builddir
            self.builddir = initial_installdir

        Test that meson adds dependencies for libraries based on the final
        linker command line.
        
unittests/allplatformstests.py