Merge topic 'revert-link-interface-direct-for-3.23' into release-3.23

687a91967f Revert INTERFACE_LINK_LIBRARIES_DIRECT feature for 3.23 branch

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !7098

78 files changed, 27 insertions, 1320 deletions

diff --git a/Help/manual/cmake-properties.7.rst b/Help/manual/cmake-properties.7.rst
index f4efd3c..ddb917a 100644
--- a/Help/manual/cmake-properties.7.rst
+++ b/Help/manual/cmake-properties.7.rst
@@ -266,8 +266,6 @@ Properties on Targets
    /prop_tgt/INTERFACE_LINK_DEPENDS
    /prop_tgt/INTERFACE_LINK_DIRECTORIES
    /prop_tgt/INTERFACE_LINK_LIBRARIES
-   /prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT
-   /prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE
    /prop_tgt/INTERFACE_LINK_OPTIONS
    /prop_tgt/INTERFACE_POSITION_INDEPENDENT_CODE
    /prop_tgt/INTERFACE_PRECOMPILE_HEADERS
diff --git a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES.rst b/Help/prop_tgt/INTERFACE_LINK_LIBRARIES.rst
index 53f5838..af3d9c2 100644
--- a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES.rst
+++ b/Help/prop_tgt/INTERFACE_LINK_LIBRARIES.rst
@@ -26,12 +26,6 @@ manual for more on defining buildsystem properties.
 
 .. include:: LINK_LIBRARIES_INDIRECTION.txt
 
-``INTERFACE_LINK_LIBRARIES`` adds transitive link dependencies for a
-target's dependents.  In advanced use cases, one may update the
-direct link dependencies of a target's dependents by using the
-:prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` and
-:prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target properties.
-
 Creating Relocatable Packages
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT.rst b/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT.rst
deleted file mode 100644
index 0507261..0000000
--- a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT.rst
+++ /dev/null
@@ -1,223 +0,0 @@
-INTERFACE_LINK_LIBRARIES_DIRECT
--------------------------------
-
-.. versionadded:: 3.23
-
-List of libraries that consumers of this library should treat
-as direct link dependencies.
-
-This target property may be set to *include* items in a dependent
-target's final set of direct link dependencies.  See the
-:prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target property
-to exclude items.
-
-The initial set of a dependent target's direct link dependencies is
-specified by its :prop_tgt:`LINK_LIBRARIES` target property.  Indirect
-link dependencies are specified by the transitive closure of the direct
-link dependencies' :prop_tgt:`INTERFACE_LINK_LIBRARIES` properties.
-Any link dependency may specify additional direct link dependencies
-using the ``INTERFACE_LINK_LIBRARIES_DIRECT`` target property.
-The set of direct link dependencies is then filtered to exclude items named
-by any dependency's :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE`
-target property.
-
-.. |INTERFACE_PROPERTY_LINK_DIRECT| replace:: ``INTERFACE_LINK_LIBRARIES_DIRECT``
-.. include:: INTERFACE_LINK_LIBRARIES_DIRECT.txt
-
-Direct Link Dependencies as Usage Requirements
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-The ``INTERFACE_PROPERTY_LINK_DIRECT`` and
-``INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE`` target properties
-are :ref:`usage requirements <Target Usage Requirements>`.
-Their effects propagate to dependent targets transitively, and can
-therefore affect the direct link dependencies of every target in a
-chain of dependent libraries.  Whenever some library target ``X`` links
-to another library target ``Y`` whose direct or transitive usage
-requirements contain ``INTERFACE_PROPERTY_LINK_DIRECT`` or
-``INTERFACE_PROPERTY_LINK_DIRECT_EXCLUDE``, the properties may affect
-``X``'s list of direct link dependencies:
-
-* If ``X`` is a shared library or executable, its dependencies are linked.
-  They also affect the usage requirements with which ``X``'s sources are
-  compiled.
-
-* If ``X`` is a static library or object library, it does not actually
-  link, so its dependencies at most affect the usage requirements with
-  which ``X``'s sources are compiled.
-
-The properties may also affect the list of direct link dependencies
-on ``X``'s dependents:
-
-* If ``X`` links ``Y`` publicly:
-
-  .. code-block:: cmake
-
-    target_link_libraries(X PUBLIC Y)
-
-  then ``Y`` is placed in ``X``'s :prop_tgt:`INTERFACE_LINK_LIBRARIES`,
-  so ``Y``'s usage requirements, including ``INTERFACE_PROPERTY_LINK_DIRECT``
-  and ``INTERFACE_PROPERTY_LINK_DIRECT_EXCLUDE``, are propagated
-  to ``X``'s dependents.
-
-* If ``X`` links ``Y`` privately:
-
-  .. code-block:: cmake
-
-    target_link_libraries(X PRIVATE Y)
-
-  then ``Y`` is not placed in ``X``'s :prop_tgt:`INTERFACE_LINK_LIBRARIES`,
-  so ``Y``'s usage requirements, even ``INTERFACE_PROPERTY_LINK_DIRECT``
-  and ``INTERFACE_PROPERTY_LINK_DIRECT_EXCLUDE``, are not propagated
-  to ``X``'s dependents.
-  (If ``X`` is a static library or object library, then ``$<LINK_ONLY:Y>``
-  is placed in ``X``'s :prop_tgt:`INTERFACE_LINK_LIBRARIES`, but the
-  :genex:`LINK_ONLY` generator expression block ``Y``'s usage requirements.)
-
-* In either case, the content of ``X``'s :prop_tgt:`INTERFACE_LINK_LIBRARIES`
-  is not affected by ``Y``'s ``INTERFACE_PROPERTY_LINK_DIRECT`` or
-  ``INTERFACE_PROPERTY_LINK_DIRECT_EXCLUDE``.
-
-One may limit the effects of ``INTERFACE_PROPERTY_LINK_DIRECT`` and
-``INTERFACE_PROPERTY_LINK_DIRECT_EXCLUDE`` to a subset of dependent
-targets by using the :genex:`TARGET_PROPERTY` generator expression.
-For example, to limit the effects to executable targets, use an
-entry of the form::
-
-  "$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:...>"
-
-Similarly, to limit the effects to specific targets, use an entry
-of the form::
-
-  "$<$<BOOL:$<TARGET_PROPERTY:USE_IT>>:...>"
-
-This entry will only affect targets that set their ``USE_IT``
-target property to a true value.
-
-Direct Link Dependency Ordering
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-The list of direct link dependencies for a target is computed from an
-initial ordered list in its :prop_tgt:`LINK_LIBRARIES` target property.
-For each item, additional direct link dependencies are discovered from
-its direct and transitive ``INTERFACE_LINK_LIBRARIES_DIRECT`` usage
-requirements.  Each discovered item is injected before the item that
-specified it.  However, a discovered item is added at most once,
-and only if it did not appear anywhere in the initial list.
-This gives :prop_tgt:`LINK_LIBRARIES` control over ordering of
-those direct link dependencies that it explicitly specifies.
-
-Once all direct link dependencies have been collected, items named by
-all of their :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE`
-usage requirements are removed from the final list.  This does not
-affect the order of the items that remain.
-
-Example: Static Plugins
-^^^^^^^^^^^^^^^^^^^^^^^
-
-Consider a static library ``Foo`` that provides a static plugin
-``FooPlugin`` to consuming application executables, where the
-implementation of the plugin depends on ``Foo`` and other things.
-In this case, the application should link to ``FooPlugin`` directly,
-before ``Foo``.  However, the application author only knows about ``Foo``.
-We can express this as follows:
-
-.. code-block:: cmake
-
-  # Core library used by other components.
-  add_library(Core STATIC core.cpp)
-
-  # Foo is a static library for use by applications.
-  # Implementation of Foo depends on Core.
-  add_library(Foo STATIC foo.cpp foo_plugin_helper.cpp)
-  target_link_libraries(Foo PRIVATE Core)
-
-  # Extra parts of Foo for use by its static plugins.
-  # Implementation of Foo's extra parts depends on both Core and Foo.
-  add_library(FooExtras STATIC foo_extras.cpp)
-  target_link_libraries(FooExtras PRIVATE Core Foo)
-
-  # The Foo library has an associated static plugin
-  # that should be linked into the final executable.
-  # Implementation of the plugin depends on Core, Foo, and FooExtras.
-  add_library(FooPlugin STATIC foo_plugin.cpp)
-  target_link_libraries(FooPlugin PRIVATE Core Foo FooExtras)
-
-  # An app that links Foo should link Foo's plugin directly.
-  set_property(TARGET Foo PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT FooPlugin)
-
-  # An app does not need to link Foo directly because the plugin links it.
-  set_property(TARGET Foo PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE Foo)
-
-An application ``app`` only needs to specify that it links to ``Foo``:
-
-.. code-block:: cmake
-
-  add_executable(app main.cpp)
-  target_link_libraries(app PRIVATE Foo)
-
-The ``INTERFACE_LINK_LIBRARIES_DIRECT`` target property on ``Foo`` tells
-CMake to pretend that ``app`` also links directly to ``FooPlugin``.
-The ``INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE`` target property on ``Foo``
-tells CMake to pretend that ``app`` did *not* link directly to ``Foo``.
-Instead, ``Foo`` will be linked as a dependency of ``FooPlugin``.  The
-final link line for ``app`` will link the libraries in the following
-order:
-
-* ``FooPlugin`` as a direct link dependency of ``app``
-  (via ``Foo``'s usage requiremens).
-* ``FooExtras`` as a dependency of ``FooPlugin``.
-* ``Foo`` as a dependency of ``FooPlugin`` and ``FooExtras``.
-* ``Core`` as a dependency of ``FooPlugin``, ``FooExtras``, and ``Foo``.
-
-Note that without the ``INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE`` target
-property, ``Foo`` would be linked twice: once as a direct dependency
-of ``app``, and once as a dependency of ``FooPlugin``.
-
-Example: Opt-In Static Plugins
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-In the above `Example: Static Plugins`_, the ``app`` executable specifies
-that it links directly to ``Foo``.  In a real application, there might
-be an intermediate library:
-
-.. code-block:: cmake
-
-  add_library(app_impl STATIC app_impl.cpp)
-  target_link_libraries(app_impl PUBLIC Foo)
-
-  add_executable(app main.cpp)
-  target_link_libraries(app PRIVATE app_impl)
-
-In this case we do not want ``Foo``'s ``INTERFACE_LINK_LIBRARIES_DIRECT``
-and ``INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE`` target properties to affect
-the direct dependencies of ``app_impl``.  To avoid this, we can revise
-the property values to make their effects opt-in:
-
-.. code-block:: cmake
-
-  # An app that links Foo should link Foo's plugin directly.
-  set_property(TARGET Foo PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT
-    "$<$<BOOL:$<TARGET_PROPERTY:FOO_STATIC_PLUGINS>>:FooPlugin>"
-  )
-
-  # An app does not need to link Foo directly because the plugin links it.
-  set_property(TARGET Foo PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE
-    "$<$<BOOL:$<TARGET_PROPERTY:FOO_STATIC_PLUGINS>>:Foo>"
-  )
-
-Now, the ``app`` executable can opt-in to get ``Foo``'s plugin(s):
-
-.. code-block:: cmake
-
-  set_property(TARGET app PROPERTY FOO_STATIC_PLUGINS 1)
-
-The final link line for ``app`` will now link the libraries in the following
-order:
-
-* ``FooPlugin`` as a direct link dependency of ``app``
-  (via ``Foo``'s usage requiremens).
-* ``app_impl`` as a direct link dependency of ``app``.
-* ``FooExtras`` as a dependency of ``FooPlugin``.
-* ``Foo`` as a dependency of ``app_impl``, ``FooPlugin``, and ``FooExtras``.
-* ``Core`` as a dependency of ``FooPlugin``, ``FooExtras``, and ``Foo``.
diff --git a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT.txt b/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT.txt
deleted file mode 100644
index 077af42..0000000
--- a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-The value of |INTERFACE_PROPERTY_LINK_DIRECT| may use
-:manual:`generator expressions <cmake-generator-expressions(7)>`.
-
-.. note::
-
-  The |INTERFACE_PROPERTY_LINK_DIRECT| target property is intended for
-  advanced use cases such as injection of static plugins into a consuming
-  executable.  It should not be used as a substitute for organizing
-  normal calls to :command:`target_link_libraries`.
diff --git a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE.rst b/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE.rst
deleted file mode 100644
index c92f142..0000000
--- a/Help/prop_tgt/INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE.rst
+++ /dev/null
@@ -1,34 +0,0 @@
-INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE
----------------------------------------
-
-.. versionadded:: 3.23
-
-List of libraries that consumers of this library should *not* treat
-as direct link dependencies.
-
-This target property may be set to *exclude* items from a dependent
-target's final set of direct link dependencies.  This property is
-processed after the :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT`
-target property of all other dependencies of the dependent target, so
-exclusion from direct link dependence takes priority over inclusion.
-
-The initial set of a dependent target's direct link dependencies is
-specified by its :prop_tgt:`LINK_LIBRARIES` target property.  Indirect
-link dependencies are specified by the transitive closure of the direct
-link dependencies' :prop_tgt:`INTERFACE_LINK_LIBRARIES` properties.
-Any link dependency may specify additional direct link dependencies
-using the :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` target property.
-The set of direct link dependencies is then filtered to exclude items named
-by any dependency's ``INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE`` target
-property.
-
-Excluding an item from a dependent target's direct link dependencies
-does not mean the dependent target won't link the item.  The item
-may still be linked as an indirect link dependency via the
-:prop_tgt:`INTERFACE_LINK_LIBRARIES` property on other dependencies.
-
-.. |INTERFACE_PROPERTY_LINK_DIRECT| replace:: ``INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE``
-.. include:: INTERFACE_LINK_LIBRARIES_DIRECT.txt
-
-See the :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` target property
-documentation for more details and examples.
diff --git a/Help/prop_tgt/LINK_LIBRARIES.rst b/Help/prop_tgt/LINK_LIBRARIES.rst
index ae5334a..29baf8c 100644
--- a/Help/prop_tgt/LINK_LIBRARIES.rst
+++ b/Help/prop_tgt/LINK_LIBRARIES.rst
@@ -20,8 +20,3 @@ for available expressions.  See the :manual:`cmake-buildsystem(7)` manual
 for more on defining buildsystem properties.
 
 .. include:: LINK_LIBRARIES_INDIRECTION.txt
-
-In advanced use cases, the list of direct link dependencies specified
-by this property may be updated by usage requirements from dependencies.
-See the :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` and
-:prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target properties.
diff --git a/Help/release/3.23.rst b/Help/release/3.23.rst
index 285a471..1a3f53e 100644
--- a/Help/release/3.23.rst
+++ b/Help/release/3.23.rst
@@ -130,11 +130,6 @@ Properties
   not be treated as a system library (i.e. its include directories
   are not automatically ``SYSTEM``).
 
-* The :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT` and
-  :prop_tgt:`INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE` target properties
-  were added to express usage requirements affecting a consumer's
-  direct link dependencies.
-
 * The :prop_tgt:`XCODE_EMBED_PLUGINS <XCODE_EMBED_<type>>` target property
   was added to tell the :generator:`Xcode` generator what targets to put in
   the ``Embed PlugIns`` build phase.
diff --git a/Source/cmExportFileGenerator.cxx b/Source/cmExportFileGenerator.cxx
index b46b933..ed1e4cb 100644
--- a/Source/cmExportFileGenerator.cxx
+++ b/Source/cmExportFileGenerator.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmExportFileGenerator.h"
 
-#include <array>
 #include <cassert>
 #include <cstring>
 #include <sstream>
@@ -176,24 +175,18 @@ bool cmExportFileGenerator::PopulateInterfaceLinkLibrariesProperty(
   if (!target->IsLinkable()) {
     return false;
   }
-  static const std::array<std::string, 3> linkIfaceProps = {
-    { "INTERFACE_LINK_LIBRARIES", "INTERFACE_LINK_LIBRARIES_DIRECT",
-      "INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE" }
-  };
-  bool hadINTERFACE_LINK_LIBRARIES = false;
-  for (std::string const& linkIfaceProp : linkIfaceProps) {
-    if (cmValue input = target->GetProperty(linkIfaceProp)) {
-      std::string prepro =
-        cmGeneratorExpression::Preprocess(*input, preprocessRule);
-      if (!prepro.empty()) {
-        this->ResolveTargetsInGeneratorExpressions(
-          prepro, target, missingTargets, ReplaceFreeTargets);
-        properties[linkIfaceProp] = prepro;
-        hadINTERFACE_LINK_LIBRARIES = true;
-      }
+  cmValue input = target->GetProperty("INTERFACE_LINK_LIBRARIES");
+  if (input) {
+    std::string prepro =
+      cmGeneratorExpression::Preprocess(*input, preprocessRule);
+    if (!prepro.empty()) {
+      this->ResolveTargetsInGeneratorExpressions(
+        prepro, target, missingTargets, ReplaceFreeTargets);
+      properties["INTERFACE_LINK_LIBRARIES"] = prepro;
+      return true;
     }
   }
-  return hadINTERFACE_LINK_LIBRARIES;
+  return false;
 }
 
 static bool isSubDirectory(std::string const& a, std::string const& b)
diff --git a/Source/cmExportTryCompileFileGenerator.cxx b/Source/cmExportTryCompileFileGenerator.cxx
index e98aa05..db9b05b 100644
--- a/Source/cmExportTryCompileFileGenerator.cxx
+++ b/Source/cmExportTryCompileFileGenerator.cxx
@@ -111,8 +111,6 @@ void cmExportTryCompileFileGenerator::PopulateProperties(
   std::vector<std::string> props = target->GetPropertyKeys();
   // Include special properties that might be relevant here.
   props.emplace_back("INTERFACE_LINK_LIBRARIES");
-  props.emplace_back("INTERFACE_LINK_LIBRARIES_DIRECT");
-  props.emplace_back("INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE");
   for (std::string const& p : props) {
     cmValue v = target->GetProperty(p);
     if (!v) {
diff --git a/Source/cmGeneratorExpressionDAGChecker.cxx b/Source/cmGeneratorExpressionDAGChecker.cxx
index d4b02a5..187db73 100644
--- a/Source/cmGeneratorExpressionDAGChecker.cxx
+++ b/Source/cmGeneratorExpressionDAGChecker.cxx
@@ -189,8 +189,6 @@ bool cmGeneratorExpressionDAGChecker::EvaluatingLinkLibraries(
   }
 
   return prop == "LINK_LIBRARIES"_s || prop == "INTERFACE_LINK_LIBRARIES"_s ||
-    prop == "INTERFACE_LINK_LIBRARIES_DIRECT"_s ||
-    prop == "INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE"_s ||
     prop == "LINK_INTERFACE_LIBRARIES"_s ||
     prop == "IMPORTED_LINK_INTERFACE_LIBRARIES"_s ||
     cmHasLiteralPrefix(prop, "LINK_INTERFACE_LIBRARIES_") ||
diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index 63cf2ec..a8bc91c 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -58,10 +58,6 @@ using LinkInterfaceFor = cmGeneratorTarget::LinkInterfaceFor;
 const cmsys::RegularExpression FrameworkRegularExpression(
   "^(.*/)?([^/]*)\\.framework/(.*)$");
 const std::string kINTERFACE_LINK_LIBRARIES = "INTERFACE_LINK_LIBRARIES";
-const std::string kINTERFACE_LINK_LIBRARIES_DIRECT =
-  "INTERFACE_LINK_LIBRARIES_DIRECT";
-const std::string kINTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE =
-  "INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE";
 }
 
 template <>
@@ -6671,10 +6667,12 @@ cm::optional<cmLinkItem> cmGeneratorTarget::LookupLinkItem(
   return maybeItem;
 }
 
-void cmGeneratorTarget::ExpandLinkItems(
-  std::string const& prop, cmBTStringRange entries, std::string const& config,
-  cmGeneratorTarget const* headTarget, LinkInterfaceFor interfaceFor,
-  LinkInterfaceField field, cmLinkInterface& iface) const
+void cmGeneratorTarget::ExpandLinkItems(std::string const& prop,
+                                        cmBTStringRange entries,
+                                        std::string const& config,
+                                        cmGeneratorTarget const* headTarget,
+                                        LinkInterfaceFor interfaceFor,
+                                        cmLinkInterface& iface) const
 {
   if (entries.empty()) {
     return;
@@ -6698,19 +6696,9 @@ void cmGeneratorTarget::ExpandLinkItems(
                     this, headTarget->LinkerLanguage));
     for (std::string const& lib : libs) {
       if (cm::optional<cmLinkItem> maybeItem = this->LookupLinkItem(
-            lib, cge->GetBacktrace(), &scope,
-            field == LinkInterfaceField::Libraries ? LookupSelf::No
-                                                   : LookupSelf::Yes)) {
+            lib, cge->GetBacktrace(), &scope, LookupSelf::No)) {
         cmLinkItem item = std::move(*maybeItem);
 
-        if (field == LinkInterfaceField::HeadInclude) {
-          iface.HeadInclude.emplace_back(std::move(item));
-          continue;
-        }
-        if (field == LinkInterfaceField::HeadExclude) {
-          iface.HeadExclude.emplace_back(std::move(item));
-          continue;
-        }
         if (!item.Target) {
           // Report explicitly linked object files separately.
           std::string const& maybeObj = item.AsStr();
@@ -7181,9 +7169,7 @@ void cmGeneratorTarget::ComputeLinkInterfaceLibraries(
                            this->GetPolicyStatusCMP0022() != cmPolicies::WARN);
   if (cmp0022NEW) {
     // CMP0022 NEW behavior is to use INTERFACE_LINK_LIBRARIES.
-    haveExplicitLibraries = !this->Target->GetLinkInterfaceEntries().empty() ||
-      !this->Target->GetLinkInterfaceDirectEntries().empty() ||
-      !this->Target->GetLinkInterfaceDirectExcludeEntries().empty();
+    haveExplicitLibraries = !this->Target->GetLinkInterfaceEntries().empty();
   } else {
     // CMP0022 OLD behavior is to use LINK_INTERFACE_LIBRARIES if set on a
     // shared lib or executable.
@@ -7248,24 +7234,15 @@ void cmGeneratorTarget::ComputeLinkInterfaceLibraries(
   if (cmp0022NEW) {
     // The interface libraries are specified by INTERFACE_LINK_LIBRARIES.
     // Use its special representation directly to get backtraces.
-    this->ExpandLinkItems(
-      kINTERFACE_LINK_LIBRARIES, this->Target->GetLinkInterfaceEntries(),
-      config, headTarget, interfaceFor, LinkInterfaceField::Libraries, iface);
-    this->ExpandLinkItems(kINTERFACE_LINK_LIBRARIES_DIRECT,
-                          this->Target->GetLinkInterfaceDirectEntries(),
-                          config, headTarget, interfaceFor,
-                          LinkInterfaceField::HeadInclude, iface);
-    this->ExpandLinkItems(kINTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE,
-                          this->Target->GetLinkInterfaceDirectExcludeEntries(),
-                          config, headTarget, interfaceFor,
-                          LinkInterfaceField::HeadExclude, iface);
+    this->ExpandLinkItems(kINTERFACE_LINK_LIBRARIES,
+                          this->Target->GetLinkInterfaceEntries(), config,
+                          headTarget, interfaceFor, iface);
   } else if (explicitLibrariesCMP0022OLD) {
     // The interface libraries have been explicitly set in pre-CMP0022 style.
     std::vector<BT<std::string>> entries;
     entries.emplace_back(*explicitLibrariesCMP0022OLD);
     this->ExpandLinkItems(linkIfacePropCMP0022OLD, cmMakeRange(entries),
-                          config, headTarget, interfaceFor,
-                          LinkInterfaceField::Libraries, iface);
+                          config, headTarget, interfaceFor, iface);
   }
 
   // If the link interface is explicit, do not fall back to the link impl.
@@ -7285,8 +7262,7 @@ void cmGeneratorTarget::ComputeLinkInterfaceLibraries(
       cmLinkInterface ifaceNew;
       this->ExpandLinkItems(kINTERFACE_LINK_LIBRARIES,
                             this->Target->GetLinkInterfaceEntries(), config,
-                            headTarget, interfaceFor,
-                            LinkInterfaceField::Libraries, ifaceNew);
+                            headTarget, interfaceFor, ifaceNew);
       if (ifaceNew.Libraries != iface.Libraries) {
         std::string oldLibraries = cmJoin(impl->Libraries, ";");
         std::string newLibraries = cmJoin(ifaceNew.Libraries, ";");
@@ -7426,17 +7402,8 @@ const cmLinkInterface* cmGeneratorTarget::GetImportLinkInterface(
     iface.LibrariesDone = true;
     iface.Multiplicity = info->Multiplicity;
     cmExpandList(info->Languages, iface.Languages);
-    this->ExpandLinkItems(kINTERFACE_LINK_LIBRARIES_DIRECT,
-                          cmMakeRange(info->LibrariesHeadInclude), config,
-                          headTarget, interfaceFor,
-                          LinkInterfaceField::HeadInclude, iface);
-    this->ExpandLinkItems(kINTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE,
-                          cmMakeRange(info->LibrariesHeadExclude), config,
-                          headTarget, interfaceFor,
-                          LinkInterfaceField::HeadExclude, iface);
     this->ExpandLinkItems(info->LibrariesProp, cmMakeRange(info->Libraries),
-                          config, headTarget, interfaceFor,
-                          LinkInterfaceField::Libraries, iface);
+                          config, headTarget, interfaceFor, iface);
     std::vector<std::string> deps = cmExpandedList(info->SharedDeps);
     LookupLinkItemScope scope{ this->LocalGenerator };
     for (std::string const& dep : deps) {
@@ -7529,14 +7496,6 @@ void cmGeneratorTarget::ComputeImportInfo(std::string const& desired_config,
       }
     }
   }
-  for (BT<std::string> const& entry :
-       this->Target->GetLinkInterfaceDirectEntries()) {
-    info.LibrariesHeadInclude.emplace_back(entry);
-  }
-  for (BT<std::string> const& entry :
-       this->Target->GetLinkInterfaceDirectExcludeEntries()) {
-    info.LibrariesHeadExclude.emplace_back(entry);
-  }
   if (this->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
     if (loc) {
       info.LibName = *loc;
@@ -7970,112 +7929,6 @@ bool cmGeneratorTarget::IsNullImpliedByLinkLibraries(
   return cm::contains(this->LinkImplicitNullProperties, p);
 }
 
-namespace {
-class TransitiveLinkImpl
-{
-  cmGeneratorTarget const* Self;
-  std::string const& Config;
-  cmLinkImplementation& Impl;
-
-  std::set<cmLinkItem> Emitted;
-  std::set<cmLinkItem> Excluded;
-  std::unordered_set<cmGeneratorTarget const*> Followed;
-
-  void Follow(cmGeneratorTarget const* target);
-
-public:
-  TransitiveLinkImpl(cmGeneratorTarget const* self, std::string const& config,
-                     cmLinkImplementation& impl)
-    : Self(self)
-    , Config(config)
-    , Impl(impl)
-  {
-  }
-
-  void Compute();
-};
-
-void TransitiveLinkImpl::Follow(cmGeneratorTarget const* target)
-{
-  if (!target || !this->Followed.insert(target).second ||
-      target->GetPolicyStatusCMP0022() == cmPolicies::OLD ||
-      target->GetPolicyStatusCMP0022() == cmPolicies::WARN) {
-    return;
-  }
-
-  // Get this target's usage requirements.
-  cmLinkInterfaceLibraries const* iface = target->GetLinkInterfaceLibraries(
-    this->Config, this->Self, LinkInterfaceFor::Usage);
-  if (!iface) {
-    return;
-  }
-  if (iface->HadContextSensitiveCondition) {
-    this->Impl.HadContextSensitiveCondition = true;
-  }
-
-  // Process 'INTERFACE_LINK_LIBRARIES_DIRECT' usage requirements.
-  for (cmLinkItem const& item : iface->HeadInclude) {
-    // Inject direct dependencies from the item's usage requirements
-    // before the item itself.
-    this->Follow(item.Target);
-
-    // Add the item itself, but at most once.
-    if (this->Emitted.insert(item).second) {
-      this->Impl.Libraries.emplace_back(item, /* checkCMP0027= */ false);
-    }
-  }
-
-  // Follow transitive dependencies.
-  for (cmLinkItem const& item : iface->Libraries) {
-    this->Follow(item.Target);
-  }
-
-  // Record exclusions from 'INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE'
-  // usage requirements.
-  for (cmLinkItem const& item : iface->HeadExclude) {
-    this->Excluded.insert(item);
-  }
-}
-
-void TransitiveLinkImpl::Compute()
-{
-  // Save the original items and start with an empty list.
-  std::vector<cmLinkImplItem> original = std::move(this->Impl.Libraries);
-
-  // Avoid injecting any original items as usage requirements.
-  // This gives LINK_LIBRARIES final control over the order
-  // if it explicitly lists everything.
-  this->Emitted.insert(original.cbegin(), original.cend());
-
-  // Process each original item.
-  for (cmLinkImplItem& item : original) {
-    // Inject direct dependencies listed in 'INTERFACE_LINK_LIBRARIES_DIRECT'
-    // usage requirements before the item itself.
-    this->Follow(item.Target);
-
-    // Add the item itself.
-    this->Impl.Libraries.emplace_back(std::move(item));
-  }
-
-  // Remove items listed in 'INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE'
-  // usage requirements found through any dependency above.
-  this->Impl.Libraries.erase(
-    std::remove_if(this->Impl.Libraries.begin(), this->Impl.Libraries.end(),
-                   [this](cmLinkImplItem const& item) {
-                     return this->Excluded.find(item) != this->Excluded.end();
-                   }),
-    this->Impl.Libraries.end());
-}
-
-void ComputeLinkImplTransitive(cmGeneratorTarget const* self,
-                               std::string const& config,
-                               cmLinkImplementation& impl)
-{
-  TransitiveLinkImpl transitiveLinkImpl(self, config, impl);
-  transitiveLinkImpl.Compute();
-}
-}
-
 void cmGeneratorTarget::ComputeLinkImplementationLibraries(
   const std::string& config, cmOptionalLinkImplementation& impl,
   cmGeneratorTarget const* head) const
@@ -8182,11 +8035,6 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
     cge->GetMaxLanguageStandard(this, this->MaxLanguageStandards);
   }
 
-  // Update the list of direct link dependencies from usage requirements.
-  if (head == this) {
-    ComputeLinkImplTransitive(this, config, impl);
-  }
-
   // Get the list of configurations considered to be DEBUG.
   std::vector<std::string> debugConfigs =
     this->Makefile->GetCMakeInstance()->GetDebugConfigs();
diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index 45639c0..7cf1720 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -1006,8 +1006,6 @@ private:
     std::string Languages;
     std::string LibrariesProp;
     std::vector<BT<std::string>> Libraries;
-    std::vector<BT<std::string>> LibrariesHeadInclude;
-    std::vector<BT<std::string>> LibrariesHeadExclude;
     std::string SharedDeps;
   };
 
@@ -1068,16 +1066,10 @@ private:
   bool IsLinkLookupScope(std::string const& n,
                          cmLocalGenerator const*& lg) const;
 
-  enum class LinkInterfaceField
-  {
-    Libraries,
-    HeadExclude,
-    HeadInclude,
-  };
   void ExpandLinkItems(std::string const& prop, cmBTStringRange entries,
                        std::string const& config,
                        const cmGeneratorTarget* headTarget,
-                       LinkInterfaceFor interfaceFor, LinkInterfaceField field,
+                       LinkInterfaceFor interfaceFor,
                        cmLinkInterface& iface) const;
 
   struct LookupLinkItemScope
diff --git a/Source/cmLinkItem.h b/Source/cmLinkItem.h
index 262728b..e715659 100644
--- a/Source/cmLinkItem.h
+++ b/Source/cmLinkItem.h
@@ -70,12 +70,6 @@ struct cmLinkInterfaceLibraries
   // Object files listed in the interface.
   std::vector<cmLinkItem> Objects;
 
-  // Items to be included as if directly linked by the head target.
-  std::vector<cmLinkItem> HeadInclude;
-
-  // Items to be excluded from direct linking by the head target.
-  std::vector<cmLinkItem> HeadExclude;
-
   // Whether the list depends on a genex referencing the head target.
   bool HadHeadSensitiveCondition = false;
 
diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 6059055..e1a9667 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -203,8 +203,6 @@ public:
   std::vector<BT<std::string>> LinkDirectoriesEntries;
   std::vector<BT<std::string>> LinkImplementationPropertyEntries;
   std::vector<BT<std::string>> LinkInterfacePropertyEntries;
-  std::vector<BT<std::string>> LinkInterfaceDirectPropertyEntries;
-  std::vector<BT<std::string>> LinkInterfaceDirectExcludePropertyEntries;
   std::vector<BT<std::string>> HeaderSetsEntries;
   std::vector<BT<std::string>> InterfaceHeaderSetsEntries;
   std::vector<std::pair<cmTarget::TLLSignature, cmListFileContext>>
@@ -1144,16 +1142,6 @@ cmBTStringRange cmTarget::GetLinkInterfaceEntries() const
   return cmMakeRange(this->impl->LinkInterfacePropertyEntries);
 }
 
-cmBTStringRange cmTarget::GetLinkInterfaceDirectEntries() const
-{
-  return cmMakeRange(this->impl->LinkInterfaceDirectPropertyEntries);
-}
-
-cmBTStringRange cmTarget::GetLinkInterfaceDirectExcludeEntries() const
-{
-  return cmMakeRange(this->impl->LinkInterfaceDirectExcludePropertyEntries);
-}
-
 cmBTStringRange cmTarget::GetHeaderSetsEntries() const
 {
   return cmMakeRange(this->impl->HeaderSetsEntries);
@@ -1198,8 +1186,6 @@ MAKE_PROP(HEADER_SET);
 MAKE_PROP(HEADER_SETS);
 MAKE_PROP(INTERFACE_HEADER_SETS);
 MAKE_PROP(INTERFACE_LINK_LIBRARIES);
-MAKE_PROP(INTERFACE_LINK_LIBRARIES_DIRECT);
-MAKE_PROP(INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE);
 #undef MAKE_PROP
 }
 
@@ -1331,19 +1317,6 @@ void cmTarget::StoreProperty(const std::string& prop, ValueType value)
       cmListFileBacktrace lfbt = this->impl->Makefile->GetBacktrace();
       this->impl->LinkInterfacePropertyEntries.emplace_back(value, lfbt);
     }
-  } else if (prop == propINTERFACE_LINK_LIBRARIES_DIRECT) {
-    this->impl->LinkInterfaceDirectPropertyEntries.clear();
-    if (value) {
-      cmListFileBacktrace lfbt = this->impl->Makefile->GetBacktrace();
-      this->impl->LinkInterfaceDirectPropertyEntries.emplace_back(value, lfbt);
-    }
-  } else if (prop == propINTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE) {
-    this->impl->LinkInterfaceDirectExcludePropertyEntries.clear();
-    if (value) {
-      cmListFileBacktrace lfbt = this->impl->Makefile->GetBacktrace();
-      this->impl->LinkInterfaceDirectExcludePropertyEntries.emplace_back(value,
-                                                                         lfbt);
-    }
   } else if (prop == propSOURCES) {
     this->impl->SourceEntries.clear();
     if (value) {
@@ -1602,17 +1575,6 @@ void cmTarget::AppendProperty(const std::string& prop,
       cmListFileBacktrace lfbt = this->impl->Makefile->GetBacktrace();
       this->impl->LinkInterfacePropertyEntries.emplace_back(value, lfbt);
     }
-  } else if (prop == propINTERFACE_LINK_LIBRARIES_DIRECT) {
-    if (!value.empty()) {
-      cmListFileBacktrace lfbt = this->impl->Makefile->GetBacktrace();
-      this->impl->LinkInterfaceDirectPropertyEntries.emplace_back(value, lfbt);
-    }
-  } else if (prop == propINTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE) {
-    if (!value.empty()) {
-      cmListFileBacktrace lfbt = this->impl->Makefile->GetBacktrace();
-      this->impl->LinkInterfaceDirectExcludePropertyEntries.emplace_back(value,
-                                                                         lfbt);
-    }
   } else if (prop == "SOURCES") {
     cmListFileBacktrace lfbt = this->impl->Makefile->GetBacktrace();
     this->impl->SourceEntries.emplace_back(value, lfbt);
@@ -1923,8 +1885,6 @@ cmValue cmTarget::GetProperty(const std::string& prop) const
     propHEADER_SETS,
     propINTERFACE_HEADER_SETS,
     propINTERFACE_LINK_LIBRARIES,
-    propINTERFACE_LINK_LIBRARIES_DIRECT,
-    propINTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE,
   };
   if (specialProps.count(prop)) {
     if (prop == propC_STANDARD || prop == propCXX_STANDARD ||
@@ -1954,25 +1914,6 @@ cmValue cmTarget::GetProperty(const std::string& prop) const
       output = cmJoin(this->impl->LinkInterfacePropertyEntries, ";");
       return cmValue(output);
     }
-    if (prop == propINTERFACE_LINK_LIBRARIES_DIRECT) {
-      if (this->impl->LinkInterfaceDirectPropertyEntries.empty()) {
-        return nullptr;
-      }
-
-      static std::string output;
-      output = cmJoin(this->impl->LinkInterfaceDirectPropertyEntries, ";");
-      return cmValue(output);
-    }
-    if (prop == propINTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE) {
-      if (this->impl->LinkInterfaceDirectExcludePropertyEntries.empty()) {
-        return nullptr;
-      }
-
-      static std::string output;
-      output =
-        cmJoin(this->impl->LinkInterfaceDirectExcludePropertyEntries, ";");
-      return cmValue(output);
-    }
     // the type property returns what type the target is
     if (prop == propTYPE) {
       return cmValue(cmState::GetTargetTypeName(this->GetType()));
diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index 0cdd2fc..1bbd0b0 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -269,8 +269,6 @@ public:
   cmBTStringRange GetLinkImplementationEntries() const;
 
   cmBTStringRange GetLinkInterfaceEntries() const;
-  cmBTStringRange GetLinkInterfaceDirectEntries() const;
-  cmBTStringRange GetLinkInterfaceDirectExcludeEntries() const;
 
   cmBTStringRange GetHeaderSetsEntries() const;
 
diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index 6946ffb..faa199d 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -3589,8 +3589,6 @@ if(BUILD_TESTING)
     --test-command InterfaceLinkLibraries)
   list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/InterfaceLinkLibraries")
 
-  ADD_TEST_MACRO(InterfaceLinkLibrariesDirect)
-
   if(NOT CMake_TEST_EXTERNAL_CMAKE)
     add_subdirectory(CMakeTests)
   endif()
diff --git a/Tests/ExportImport/Export/CMakeLists.txt b/Tests/ExportImport/Export/CMakeLists.txt
index c9e41f5..a79efd0 100644
--- a/Tests/ExportImport/Export/CMakeLists.txt
+++ b/Tests/ExportImport/Export/CMakeLists.txt
@@ -163,16 +163,6 @@ install(
 
 cmake_policy(PUSH)
 cmake_policy(SET CMP0022 NEW)
-
-# Test control over direct linking.
-include(../../InterfaceLinkLibrariesDirect/testStaticLibPlugin.cmake)
-include(../../InterfaceLinkLibrariesDirect/testSharedLibWithHelper.cmake)
-include(../../InterfaceLinkLibrariesDirect/testExeWithPluginHelper.cmake)
-if(NOT maybe_OBJECTS_DESTINATION)
-  target_compile_definitions(testSharedLibHelperObj INTERFACE testSharedLibHelperObj_NO_OBJECT)
-  target_compile_definitions(testExePluginHelperObj INTERFACE testExePluginHelperObj_NO_OBJECT)
-endif()
-
 # Test exporting dependent libraries into different exports
 add_library(testLibRequired testLibRequired.c)
 add_library(testLibDepends testLibDepends.c)
@@ -554,9 +544,6 @@ install(
   testLibDeprecation
   testLibCycleA testLibCycleB
   testLibNoSONAME
-  testStaticLibWithPlugin testStaticLibPluginExtra testStaticLibPlugin
-  testSharedLibWithHelper testSharedLibHelperObj
-  testExeWithPluginHelper testExePluginHelperObj
   testMod1 testMod2
   cmp0022NEW cmp0022OLD
   TopDirLib SubDirLinkA
@@ -632,9 +619,6 @@ export(TARGETS testExe2 testLib4 testLib5 testLib6 testLib7 testExe3 testExe4 te
   testLib4lib testLib4libdbg testLib4libopt
   testLibCycleA testLibCycleB
   testLibNoSONAME
-  testStaticLibWithPlugin testStaticLibPluginExtra testStaticLibPlugin
-  testSharedLibWithHelper testSharedLibHelperObj
-  testExeWithPluginHelper testExePluginHelperObj
   testMod1 testMod2
   testLibPerConfigDest
   NAMESPACE bld_
diff --git a/Tests/ExportImport/Import/A/CMakeLists.txt b/Tests/ExportImport/Import/A/CMakeLists.txt
index 272c7a9..d6cc8d0 100644
--- a/Tests/ExportImport/Import/A/CMakeLists.txt
+++ b/Tests/ExportImport/Import/A/CMakeLists.txt
@@ -68,23 +68,16 @@ target_link_libraries(imp_testExe1
   exp_testLib7
   exp_testLibCycleA
   exp_testLibPerConfigDest
-  exp_testStaticLibWithPlugin
   )
 
 add_library(imp_testInterfaceInclude1 STATIC imp_testInterfaceInclude1.c)
 target_include_directories(imp_testInterfaceInclude1 SYSTEM PRIVATE testInterfaceIncludeSystem)
 target_link_libraries(imp_testInterfaceInclude1 PRIVATE exp_testInterfaceIncludeUser)
 
-add_executable(imp_UseSharedLibWithHelper1 ../../../InterfaceLinkLibrariesDirect/UseSharedLibWithHelper.c)
-target_link_libraries(imp_UseSharedLibWithHelper1 PRIVATE exp_testSharedLibWithHelper testSharedLibHelperExclude)
-
 # Try building a plugin to an executable imported from the install tree.
 add_library(imp_mod1 MODULE imp_mod1.c)
 target_link_libraries(imp_mod1 exp_testExe2)
 
-add_library(imp_ExePlugin1 MODULE ../../../InterfaceLinkLibrariesDirect/ExePlugin.c)
-target_link_libraries(imp_ExePlugin1 PRIVATE exp_testExeWithPluginHelper testExePluginHelperExclude)
-
 # Try referencing an executable imported from the build tree.
 add_custom_command(
   OUTPUT ${Import_BINARY_DIR}/bld_generated.c
@@ -119,7 +112,6 @@ target_link_libraries(imp_testExe1b
   bld_testLib7
   bld_testLibCycleA
   bld_testLibPerConfigDest
-  bld_testStaticLibWithPlugin
   )
 
 add_library(imp_testInterfaceInclude1b STATIC imp_testInterfaceInclude1.c)
@@ -191,16 +183,10 @@ target_link_libraries(SubDirLink_bld PRIVATE bld_TopDirLib bld_SubDirLinkA)
 add_executable(SubDirLink_exp SubDirLink.c)
 target_link_libraries(SubDirLink_exp PRIVATE exp_TopDirLib exp_SubDirLinkA)
 
-add_executable(imp_UseSharedLibWithHelper1b ../../../InterfaceLinkLibrariesDirect/UseSharedLibWithHelper.c)
-target_link_libraries(imp_UseSharedLibWithHelper1b PRIVATE bld_testSharedLibWithHelper testSharedLibHelperExclude)
-
 # Try building a plugin to an executable imported from the build tree.
 add_library(imp_mod1b MODULE imp_mod1.c)
 target_link_libraries(imp_mod1b bld_testExe2)
 
-add_library(imp_ExePlugin1b MODULE ../../../InterfaceLinkLibrariesDirect/ExePlugin.c)
-target_link_libraries(imp_ExePlugin1b PRIVATE bld_testExeWithPluginHelper testExePluginHelperExclude)
-
 # Export/CMakeLists.txt pretends the RelWithDebInfo (as well as Debug)
 # configuration should link to debug libs.
 foreach(c DEBUG RELWITHDEBINFO)
diff --git a/Tests/ExportImport/Import/A/imp_testExe1.c b/Tests/ExportImport/Import/A/imp_testExe1.c
index 7490a80..8173557 100644
--- a/Tests/ExportImport/Import/A/imp_testExe1.c
+++ b/Tests/ExportImport/Import/A/imp_testExe1.c
@@ -10,7 +10,6 @@ extern int testLib6(void);
 extern int testLib7(void);
 extern int testLibCycleA1(void);
 extern int testLibPerConfigDest(void);
-extern int testStaticLibPlugin(void);
 
 /* Switch a symbol between debug and optimized builds to make sure the
    proper library is found from the testLib4 link interface.  */
@@ -25,7 +24,6 @@ int main()
 {
   return (testLib2() + generated_by_testExe1() + testLib3() + testLib4() +
           testLib5() + testLib6() + testLib7() + testLibCycleA1() +
-          testLibPerConfigDest() + testStaticLibPlugin() +
-          generated_by_testExe3() + generated_by_testExe4() + testLib4lib() +
-          testLib4libcfg());
+          testLibPerConfigDest() + generated_by_testExe3() +
+          generated_by_testExe4() + testLib4lib() + testLib4libcfg());
 }
diff --git a/Tests/InterfaceLinkLibrariesDirect/CMakeLists.txt b/Tests/InterfaceLinkLibrariesDirect/CMakeLists.txt
deleted file mode 100644
index b06a2fb..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/CMakeLists.txt
+++ /dev/null
@@ -1,156 +0,0 @@
-cmake_minimum_required(VERSION 3.21)
-project(InterfaceLinkLibrariesDirect C)
-
-include(testStaticLibPlugin.cmake)
-add_executable(InterfaceLinkLibrariesDirect main.c)
-target_link_libraries(InterfaceLinkLibrariesDirect PRIVATE testStaticLibWithPlugin)
-
-include(testSharedLibWithHelper.cmake)
-add_executable(UseSharedLibWithHelper UseSharedLibWithHelper.c)
-target_link_libraries(UseSharedLibWithHelper PRIVATE testSharedLibWithHelper testSharedLibHelperExclude)
-
-include(testExeWithPluginHelper.cmake)
-add_library(ExePlugin MODULE ExePlugin.c)
-target_link_libraries(ExePlugin PRIVATE testExeWithPluginHelper testExePluginHelperExclude)
-
-#----------------------------------------------------------------------------
-
-# Offer usage requirements and symbols to be used through static libs below.
-add_library(A STATIC
-  a_always.c
-
-  # Good symbols that direct_from_A libraries poison if incorrectly used.
-  a_not_direct_from_A.c
-  a_not_direct_from_A_for_exe.c
-  a_not_direct_from_A_optional.c
-
-  # Bad symbols in direct_from_A libraries below to ensure they come first.
-  a_poison_direct_from_A.c
-  a_poison_direct_from_A_for_exe.c
-  a_poison_direct_from_A_optional.c
-  )
-
-# Propagates as usage requirement from A.
-add_library(direct_from_A STATIC direct_from_A.c direct_from_A_poison.c)
-target_compile_definitions(direct_from_A INTERFACE DEF_DIRECT_FROM_A)
-set_property(TARGET A APPEND PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT direct_from_A)
-
-# Propagates as usage requirement from A, but only for executables.
-add_library(direct_from_A_for_exe STATIC direct_from_A_for_exe.c direct_from_A_for_exe_poison.c)
-target_compile_definitions(direct_from_A_for_exe INTERFACE DEF_DIRECT_FROM_A_FOR_EXE)
-set_property(TARGET A APPEND PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT
-  "$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:direct_from_A_for_exe>")
-
-# Propagates as usage requirement from A, but only for targets that opt-in.
-add_library(direct_from_A_optional STATIC direct_from_A_optional.c direct_from_A_optional_poison.c)
-target_compile_definitions(direct_from_A_optional INTERFACE DEF_DIRECT_FROM_A_OPTIONAL)
-set_property(TARGET A APPEND PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT
-  "$<$<BOOL:$<TARGET_PROPERTY:A_LINK_OPTIONAL>>:direct_from_A_optional>")
-
-# Uses and propagates A's usage requirements.
-# Does not use the exe-only or optional usage requirements.
-add_library(static_A_public STATIC static_A_public.c)
-target_link_libraries(static_A_public PUBLIC A)
-
-# Uses A's usage requirements, but does not propagate them.
-# Does not use the exe-only usage requirement.  Does use the optional one.
-add_library(static_A_private STATIC static_A_private.c)
-target_link_libraries(static_A_private PRIVATE A)
-set_property(TARGET static_A_private PROPERTY A_LINK_OPTIONAL 1)
-
-# Uses A's usage requirements, including an optional one.
-add_executable(exe_use_static_A_public exe_use_static_A_public.c)
-target_link_libraries(exe_use_static_A_public PRIVATE static_A_public)
-set_property(TARGET exe_use_static_A_public PROPERTY A_LINK_OPTIONAL 1)
-
-# Does not use A's usage requirements.
-add_executable(exe_use_static_A_private exe_use_static_A_private.c)
-target_link_libraries(exe_use_static_A_private PRIVATE static_A_private)
-
-#----------------------------------------------------------------------------
-
-# Test how original and injected dependencies get ordered.
-
-# A bunch of static libraries that need to be linked in alphabetic order.
-# Each library has an extra source to poison all symbols meant to be
-# provided by earlier libraries.  This enforces ordering on platforms
-# whose linkers re-visit static libraries.
-add_library(order_A STATIC order_A.c)
-add_library(order_B STATIC order_B.c order_B_poison.c)
-add_library(order_C STATIC order_C.c order_C_poison.c)
-add_library(order_D STATIC order_D.c order_D_poison.c)
-add_library(order_E STATIC order_E.c order_E_poison.c)
-add_library(order_F STATIC order_F.c order_F_poison.c)
-add_library(order_G STATIC order_G.c order_G_poison.c)
-add_library(order_H STATIC order_H.c order_H_poison.c)
-add_library(order_I STATIC order_I.c order_I_poison.c)
-add_library(order_J STATIC order_J.c order_J_poison.c)
-
-# An executable to drive linking.
-add_executable(order_main order_main.c)
-
-# In the following diagram, connection by a slash means the top
-# target lists the bottom target in a link interface property:
-#
-#  \ => INTERFACE_LINK_LIBRARIES
-#  / => INTERFACE_LINK_LIBRARIES_DIRECT
-#
-# The top of each tree represents an entry in the exe's LINK_LIBRARIES.
-# CMake should evaluate this graph to generate the proper link order.
-#
-#             D        H
-#            / \      / \
-#           B   J    F   I
-#          /   /    /   / \
-#         A   C    E   G   J
-set_property(TARGET order_main PROPERTY LINK_LIBRARIES order_D order_H)
-set_property(TARGET order_D PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT order_B)
-set_property(TARGET order_D PROPERTY INTERFACE_LINK_LIBRARIES order_J)
-set_property(TARGET order_B PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT order_A)
-set_property(TARGET order_J PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT order_C)
-set_property(TARGET order_H PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT order_F)
-set_property(TARGET order_H PROPERTY INTERFACE_LINK_LIBRARIES order_I)
-set_property(TARGET order_F PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT order_E)
-set_property(TARGET order_I PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT order_G)
-set_property(TARGET order_I PROPERTY INTERFACE_LINK_LIBRARIES order_J)
-
-#----------------------------------------------------------------------------
-
-# Test that the original LINK_LIBRARIES cannot be re-ordered by injection
-# from usage requirements.
-
-# A bunch of static libraries that need to be linked in alphabetic order.
-# Each library has an extra source to poison all symbols meant to be
-# provided by earlier libraries.  This enforces ordering on platforms
-# whose linkers re-visit static libraries.
-add_library(force_A STATIC order_A.c)
-add_library(force_B STATIC order_B.c order_B_poison.c)
-add_library(force_C STATIC order_C.c order_C_poison.c)
-add_library(force_D STATIC order_D.c order_D_poison.c)
-add_library(force_E STATIC order_E.c order_E_poison.c)
-add_library(force_F STATIC order_F.c order_F_poison.c)
-add_library(force_G STATIC order_G.c order_G_poison.c)
-add_library(force_H STATIC order_H.c order_H_poison.c)
-add_library(force_I STATIC order_I.c order_I_poison.c)
-add_library(force_J STATIC order_J.c order_J_poison.c)
-
-# An executable to drive linking.
-add_executable(force_main order_main.c)
-
-# The executable explicitly lists all the libraries in the right order.
-target_link_libraries(force_main PRIVATE force_A force_B force_C force_D force_E force_F force_G force_H)
-
-# Add legitimate normal dependencies.
-set_property(TARGET force_D PROPERTY INTERFACE_LINK_LIBRARIES force_J)
-set_property(TARGET force_H PROPERTY INTERFACE_LINK_LIBRARIES force_I)
-set_property(TARGET force_I PROPERTY INTERFACE_LINK_LIBRARIES force_J)
-
-# Add bogus injected direct dependencies to verify that they do not
-# change the original order of LINK_LIBRARIES.
-set_property(TARGET force_A PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT force_B)
-set_property(TARGET force_B PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT force_C)
-set_property(TARGET force_C PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT force_D)
-set_property(TARGET force_D PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT force_E)
-set_property(TARGET force_E PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT force_F)
-set_property(TARGET force_F PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT force_G)
-set_property(TARGET force_G PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT force_H)
diff --git a/Tests/InterfaceLinkLibrariesDirect/ExePlugin.c b/Tests/InterfaceLinkLibrariesDirect/ExePlugin.c
deleted file mode 100644
index 40a261c..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/ExePlugin.c
+++ /dev/null
@@ -1,21 +0,0 @@
-extern int testExePluginHelperObj(int n);
-
-#ifdef testExePluginHelperObj_NO_OBJECT
-int testExePluginHelperObj(int n)
-{
-  return n;
-}
-#endif
-
-#if defined(_WIN32)
-__declspec(dllimport)
-#endif
-  int testExePluginAPI(int n);
-
-#if defined(_WIN32)
-__declspec(dllexport)
-#endif
-  int testExePlugin(int n)
-{
-  return testExePluginAPI(n) + testExePluginHelperObj(n);
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/UseSharedLibWithHelper.c b/Tests/InterfaceLinkLibrariesDirect/UseSharedLibWithHelper.c
deleted file mode 100644
index 832e31f..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/UseSharedLibWithHelper.c
+++ /dev/null
@@ -1,18 +0,0 @@
-extern int testSharedLibHelperObj(int n);
-
-#ifdef testSharedLibHelperObj_NO_OBJECT
-int testSharedLibHelperObj(int n)
-{
-  return n;
-}
-#endif
-
-#if defined(_WIN32)
-__declspec(dllimport)
-#endif
-  int testSharedLibWithHelper(int n);
-
-int main(void)
-{
-  return testSharedLibWithHelper(0) + testSharedLibHelperObj(0);
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/a_always.c b/Tests/InterfaceLinkLibrariesDirect/a_always.c
deleted file mode 100644
index 007680d..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/a_always.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void a_always(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A.c b/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A.c
deleted file mode 100644
index 732d36e..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void not_direct_from_A(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A_for_exe.c b/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A_for_exe.c
deleted file mode 100644
index 9aed296..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A_for_exe.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void not_direct_from_A_for_exe(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A_optional.c b/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A_optional.c
deleted file mode 100644
index 3572e51..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/a_not_direct_from_A_optional.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void not_direct_from_A_optional(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A.c b/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A.c
deleted file mode 100644
index 6d1963d..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void poison_direct_from_A(void);
-void direct_from_A(void)
-{
-  poison_direct_from_A();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A_for_exe.c b/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A_for_exe.c
deleted file mode 100644
index 623fc07..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A_for_exe.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void poison_direct_from_A_for_exe(void);
-void direct_from_A_for_exe(void)
-{
-  poison_direct_from_A_for_exe();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A_optional.c b/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A_optional.c
deleted file mode 100644
index 0f1328e..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/a_poison_direct_from_A_optional.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void poison_direct_from_A_optional(void);
-void direct_from_A_optional(void)
-{
-  poison_direct_from_A_optional();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/direct_from_A.c b/Tests/InterfaceLinkLibrariesDirect/direct_from_A.c
deleted file mode 100644
index d6d0df3..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/direct_from_A.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void direct_from_A(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_for_exe.c b/Tests/InterfaceLinkLibrariesDirect/direct_from_A_for_exe.c
deleted file mode 100644
index dfa6db1..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_for_exe.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void direct_from_A_for_exe(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_for_exe_poison.c b/Tests/InterfaceLinkLibrariesDirect/direct_from_A_for_exe_poison.c
deleted file mode 100644
index c0ecb0b..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_for_exe_poison.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void poison_not_direct_from_A_for_exe(void);
-void not_direct_from_A_for_exe(void)
-{
-  poison_not_direct_from_A_for_exe();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_optional.c b/Tests/InterfaceLinkLibrariesDirect/direct_from_A_optional.c
deleted file mode 100644
index affdaeb..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_optional.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void direct_from_A_optional(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_optional_poison.c b/Tests/InterfaceLinkLibrariesDirect/direct_from_A_optional_poison.c
deleted file mode 100644
index c7c3528..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_optional_poison.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void poison_not_direct_from_A_optional(void);
-void not_direct_from_A_optional(void)
-{
-  poison_not_direct_from_A_optional();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_poison.c b/Tests/InterfaceLinkLibrariesDirect/direct_from_A_poison.c
deleted file mode 100644
index b03cdf7..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/direct_from_A_poison.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void poison_not_direct_from_A(void);
-void not_direct_from_A(void)
-{
-  poison_not_direct_from_A();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/exe_use_static_A_private.c b/Tests/InterfaceLinkLibrariesDirect/exe_use_static_A_private.c
deleted file mode 100644
index 024e96e..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/exe_use_static_A_private.c
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifdef DEF_DIRECT_FROM_A
-#  error "DEF_DIRECT_FROM_A incorrectly defined"
-#endif
-#ifdef DEF_DIRECT_FROM_A_FOR_EXE
-#  error "DEF_DIRECT_FROM_A_FOR_EXE incorrectly defined"
-#endif
-#ifdef DEF_DIRECT_FROM_A_OPTIONAL
-#  error "DEF_DIRECT_FROM_A_OPTIONAL incorrectly defined"
-#endif
-
-extern void static_A_private(void);
-extern void not_direct_from_A(void);
-extern void not_direct_from_A_for_exe(void);
-extern void not_direct_from_A_optional(void);
-
-int main(void)
-{
-  static_A_private();
-  not_direct_from_A();
-  not_direct_from_A_for_exe();
-  not_direct_from_A_optional();
-  return 0;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/exe_use_static_A_public.c b/Tests/InterfaceLinkLibrariesDirect/exe_use_static_A_public.c
deleted file mode 100644
index b3b0a56..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/exe_use_static_A_public.c
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef DEF_DIRECT_FROM_A
-#  error "DEF_DIRECT_FROM_A incorrectly not defined"
-#endif
-#ifndef DEF_DIRECT_FROM_A_FOR_EXE
-#  error "DEF_DIRECT_FROM_A_FOR_EXE incorrectly not defined"
-#endif
-#ifndef DEF_DIRECT_FROM_A_OPTIONAL
-#  error "DEF_DIRECT_FROM_A_OPTIONAL incorrectly not defined"
-#endif
-
-extern void static_A_public(void);
-extern void direct_from_A(void);
-extern void direct_from_A_for_exe(void);
-extern void direct_from_A_optional(void);
-
-int main(void)
-{
-  static_A_public();
-  direct_from_A();
-  direct_from_A_for_exe();
-  direct_from_A_optional();
-  return 0;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/main.c b/Tests/InterfaceLinkLibrariesDirect/main.c
deleted file mode 100644
index 53f0e6d..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/main.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern int testStaticLibPlugin(void);
-int main(void)
-{
-  return testStaticLibPlugin();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_A.c b/Tests/InterfaceLinkLibrariesDirect/order_A.c
deleted file mode 100644
index 2cd4d60..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_A.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_B(void);
-void order_A(void)
-{
-  order_B();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_B.c b/Tests/InterfaceLinkLibrariesDirect/order_B.c
deleted file mode 100644
index 1787f1d..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_B.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_C(void);
-void order_B(void)
-{
-  order_C();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_B_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_B_poison.c
deleted file mode 100644
index bcb7b4b..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_B_poison.c
+++ /dev/null
@@ -1,6 +0,0 @@
-extern void order_B_poison(void);
-
-void order_A(void)
-{
-  order_B_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_C.c b/Tests/InterfaceLinkLibrariesDirect/order_C.c
deleted file mode 100644
index e67e719..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_C.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_D(void);
-void order_C(void)
-{
-  order_D();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_C_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_C_poison.c
deleted file mode 100644
index fc31104..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_C_poison.c
+++ /dev/null
@@ -1,11 +0,0 @@
-extern void order_C_poison(void);
-
-void order_A(void)
-{
-  order_C_poison();
-}
-
-void order_B(void)
-{
-  order_C_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_D.c b/Tests/InterfaceLinkLibrariesDirect/order_D.c
deleted file mode 100644
index f5bb2d6..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_D.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_E(void);
-void order_D(void)
-{
-  order_E();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_D_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_D_poison.c
deleted file mode 100644
index d2d64e6..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_D_poison.c
+++ /dev/null
@@ -1,16 +0,0 @@
-extern void order_D_poison(void);
-
-void order_A(void)
-{
-  order_D_poison();
-}
-
-void order_B(void)
-{
-  order_D_poison();
-}
-
-void order_C(void)
-{
-  order_D_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_E.c b/Tests/InterfaceLinkLibrariesDirect/order_E.c
deleted file mode 100644
index 2a56443..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_E.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_F(void);
-void order_E(void)
-{
-  order_F();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_E_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_E_poison.c
deleted file mode 100644
index 7d8b53e..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_E_poison.c
+++ /dev/null
@@ -1,21 +0,0 @@
-extern void order_E_poison(void);
-
-void order_A(void)
-{
-  order_E_poison();
-}
-
-void order_B(void)
-{
-  order_E_poison();
-}
-
-void order_C(void)
-{
-  order_E_poison();
-}
-
-void order_D(void)
-{
-  order_E_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_F.c b/Tests/InterfaceLinkLibrariesDirect/order_F.c
deleted file mode 100644
index d242284..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_F.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_G(void);
-void order_F(void)
-{
-  order_G();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_F_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_F_poison.c
deleted file mode 100644
index 285f247..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_F_poison.c
+++ /dev/null
@@ -1,26 +0,0 @@
-extern void order_F_poison(void);
-
-void order_A(void)
-{
-  order_F_poison();
-}
-
-void order_B(void)
-{
-  order_F_poison();
-}
-
-void order_C(void)
-{
-  order_F_poison();
-}
-
-void order_D(void)
-{
-  order_F_poison();
-}
-
-void order_E(void)
-{
-  order_F_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_G.c b/Tests/InterfaceLinkLibrariesDirect/order_G.c
deleted file mode 100644
index ff71038..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_G.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_H(void);
-void order_G(void)
-{
-  order_H();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_G_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_G_poison.c
deleted file mode 100644
index 3a1fe1d..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_G_poison.c
+++ /dev/null
@@ -1,31 +0,0 @@
-extern void order_G_poison(void);
-
-void order_A(void)
-{
-  order_G_poison();
-}
-
-void order_B(void)
-{
-  order_G_poison();
-}
-
-void order_C(void)
-{
-  order_G_poison();
-}
-
-void order_D(void)
-{
-  order_G_poison();
-}
-
-void order_E(void)
-{
-  order_G_poison();
-}
-
-void order_F(void)
-{
-  order_G_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_H.c b/Tests/InterfaceLinkLibrariesDirect/order_H.c
deleted file mode 100644
index 9c62bb1..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_H.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_I(void);
-void order_H(void)
-{
-  order_I();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_H_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_H_poison.c
deleted file mode 100644
index 0c6b84f..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_H_poison.c
+++ /dev/null
@@ -1,36 +0,0 @@
-extern void order_H_poison(void);
-
-void order_A(void)
-{
-  order_H_poison();
-}
-
-void order_B(void)
-{
-  order_H_poison();
-}
-
-void order_C(void)
-{
-  order_H_poison();
-}
-
-void order_D(void)
-{
-  order_H_poison();
-}
-
-void order_E(void)
-{
-  order_H_poison();
-}
-
-void order_F(void)
-{
-  order_H_poison();
-}
-
-void order_G(void)
-{
-  order_H_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_I.c b/Tests/InterfaceLinkLibrariesDirect/order_I.c
deleted file mode 100644
index 96152de..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_I.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern void order_J(void);
-void order_I(void)
-{
-  order_J();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_I_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_I_poison.c
deleted file mode 100644
index 3fabe1f..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_I_poison.c
+++ /dev/null
@@ -1,41 +0,0 @@
-extern void order_I_poison(void);
-
-void order_A(void)
-{
-  order_I_poison();
-}
-
-void order_B(void)
-{
-  order_I_poison();
-}
-
-void order_C(void)
-{
-  order_I_poison();
-}
-
-void order_D(void)
-{
-  order_I_poison();
-}
-
-void order_E(void)
-{
-  order_I_poison();
-}
-
-void order_F(void)
-{
-  order_I_poison();
-}
-
-void order_G(void)
-{
-  order_I_poison();
-}
-
-void order_H(void)
-{
-  order_I_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_J.c b/Tests/InterfaceLinkLibrariesDirect/order_J.c
deleted file mode 100644
index 49eec47..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_J.c
+++ /dev/null
@@ -1,3 +0,0 @@
-void order_J(void)
-{
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_J_poison.c b/Tests/InterfaceLinkLibrariesDirect/order_J_poison.c
deleted file mode 100644
index 9724fd5..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_J_poison.c
+++ /dev/null
@@ -1,46 +0,0 @@
-extern void order_J_poison(void);
-
-void order_A(void)
-{
-  order_J_poison();
-}
-
-void order_B(void)
-{
-  order_J_poison();
-}
-
-void order_C(void)
-{
-  order_J_poison();
-}
-
-void order_D(void)
-{
-  order_J_poison();
-}
-
-void order_E(void)
-{
-  order_J_poison();
-}
-
-void order_F(void)
-{
-  order_J_poison();
-}
-
-void order_G(void)
-{
-  order_J_poison();
-}
-
-void order_H(void)
-{
-  order_J_poison();
-}
-
-void order_I(void)
-{
-  order_J_poison();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/order_main.c b/Tests/InterfaceLinkLibrariesDirect/order_main.c
deleted file mode 100644
index eed2453..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/order_main.c
+++ /dev/null
@@ -1,6 +0,0 @@
-extern void order_A(void);
-int main(void)
-{
-  order_A();
-  return 0;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/static_A_private.c b/Tests/InterfaceLinkLibrariesDirect/static_A_private.c
deleted file mode 100644
index d98a22c..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/static_A_private.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef DEF_DIRECT_FROM_A
-#  error "DEF_DIRECT_FROM_A incorrectly not defined"
-#endif
-#ifdef DEF_DIRECT_FROM_A_FOR_EXE
-#  error "DEF_DIRECT_FROM_A_FOR_EXE incorrectly defined"
-#endif
-#ifndef DEF_DIRECT_FROM_A_OPTIONAL
-#  error "DEF_DIRECT_FROM_A_OPTIONAL incorrectly not defined"
-#endif
-
-extern void a_always(void);
-
-void static_A_private(void)
-{
-  a_always();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/static_A_public.c b/Tests/InterfaceLinkLibrariesDirect/static_A_public.c
deleted file mode 100644
index ed88ca6..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/static_A_public.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef DEF_DIRECT_FROM_A
-#  error "DEF_DIRECT_FROM_A incorrectly not defined"
-#endif
-#ifdef DEF_DIRECT_FROM_A_FOR_EXE
-#  error "DEF_DIRECT_FROM_A_FOR_EXE incorrectly defined"
-#endif
-#ifdef DEF_DIRECT_FROM_A_OPTIONAL
-#  error "DEF_DIRECT_FROM_A_OPTIONAL incorrectly defined"
-#endif
-
-extern void a_always(void);
-
-void static_A_public(void)
-{
-  a_always();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testExePluginHelperObj.c b/Tests/InterfaceLinkLibrariesDirect/testExePluginHelperObj.c
deleted file mode 100644
index 49c495f..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testExePluginHelperObj.c
+++ /dev/null
@@ -1,4 +0,0 @@
-int testExePluginHelperObj(int n)
-{
-  return n;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testExeWithPluginHelper.c b/Tests/InterfaceLinkLibrariesDirect/testExeWithPluginHelper.c
deleted file mode 100644
index f8787db..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testExeWithPluginHelper.c
+++ /dev/null
@@ -1,12 +0,0 @@
-#ifdef _WIN32
-__declspec(dllexport)
-#endif
-  int testExePluginAPI(int n)
-{
-  return n;
-}
-
-int main(void)
-{
-  return 0;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testExeWithPluginHelper.cmake b/Tests/InterfaceLinkLibrariesDirect/testExeWithPluginHelper.cmake
deleted file mode 100644
index 97c5b65..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testExeWithPluginHelper.cmake
+++ /dev/null
@@ -1,7 +0,0 @@
-# Logic common to InterfaceLinkLibrariesDirect and ExportImport tests.
-set(src ${CMAKE_CURRENT_LIST_DIR})
-add_executable(testExeWithPluginHelper ${src}/testExeWithPluginHelper.c)
-add_library(testExePluginHelperObj OBJECT ${src}/testExePluginHelperObj.c)
-set_property(TARGET testExeWithPluginHelper PROPERTY ENABLE_EXPORTS 1)
-set_property(TARGET testExeWithPluginHelper PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT $<TARGET_NAME:testExePluginHelperObj>)
-set_property(TARGET testExeWithPluginHelper PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE $<1:testExePluginHelperExclude>)
diff --git a/Tests/InterfaceLinkLibrariesDirect/testSharedLibHelperObj.c b/Tests/InterfaceLinkLibrariesDirect/testSharedLibHelperObj.c
deleted file mode 100644
index 9d55fcb..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testSharedLibHelperObj.c
+++ /dev/null
@@ -1,4 +0,0 @@
-int testSharedLibHelperObj(int n)
-{
-  return n;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testSharedLibWithHelper.c b/Tests/InterfaceLinkLibrariesDirect/testSharedLibWithHelper.c
deleted file mode 100644
index f942b54..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testSharedLibWithHelper.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifdef _WIN32
-__declspec(dllexport)
-#endif
-  int testSharedLibWithHelper(int n)
-{
-  return n;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testSharedLibWithHelper.cmake b/Tests/InterfaceLinkLibrariesDirect/testSharedLibWithHelper.cmake
deleted file mode 100644
index c51751c..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testSharedLibWithHelper.cmake
+++ /dev/null
@@ -1,6 +0,0 @@
-# Logic common to InterfaceLinkLibrariesDirect and ExportImport tests.
-set(src ${CMAKE_CURRENT_LIST_DIR})
-add_library(testSharedLibWithHelper SHARED ${src}/testSharedLibWithHelper.c)
-add_library(testSharedLibHelperObj OBJECT ${src}/testSharedLibHelperObj.c)
-set_property(TARGET testSharedLibWithHelper PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT $<TARGET_NAME:testSharedLibHelperObj>)
-set_property(TARGET testSharedLibWithHelper PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE $<1:testSharedLibHelperExclude>)
diff --git a/Tests/InterfaceLinkLibrariesDirect/testStaticLibPlugin.c b/Tests/InterfaceLinkLibrariesDirect/testStaticLibPlugin.c
deleted file mode 100644
index 17f643f..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testStaticLibPlugin.c
+++ /dev/null
@@ -1,6 +0,0 @@
-extern int testStaticLibWithPlugin1(void);
-extern int testStaticLibPluginExtra(void);
-int testStaticLibPlugin(void)
-{
-  return testStaticLibWithPlugin1() + testStaticLibPluginExtra();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testStaticLibPlugin.cmake b/Tests/InterfaceLinkLibrariesDirect/testStaticLibPlugin.cmake
deleted file mode 100644
index 907872f..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testStaticLibPlugin.cmake
+++ /dev/null
@@ -1,14 +0,0 @@
-# Logic common to InterfaceLinkLibrariesDirect and ExportImport tests.
-set(src ${CMAKE_CURRENT_LIST_DIR})
-add_library(testStaticLibWithPlugin STATIC
-  ${src}/testStaticLibWithPlugin1.c    # used by testStaticLibPlugin
-  ${src}/testStaticLibWithPlugin2.c    # used by testStaticLibPluginExtra
-  ${src}/testStaticLibWithPluginBad1.c # link error if not after testStaticLibPlugin
-  ${src}/testStaticLibWithPluginBad2.c # link error if not after testStaticLibPluginExtra
-  )
-add_library(testStaticLibPluginExtra STATIC ${src}/testStaticLibPluginExtra.c)
-add_library(testStaticLibPlugin STATIC ${src}/testStaticLibPlugin.c)
-target_link_libraries(testStaticLibPlugin PUBLIC testStaticLibWithPlugin testStaticLibPluginExtra)
-target_link_libraries(testStaticLibPluginExtra PUBLIC testStaticLibWithPlugin)
-set_property(TARGET testStaticLibWithPlugin PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT testStaticLibPlugin)
-set_property(TARGET testStaticLibWithPlugin PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE testStaticLibWithPlugin)
diff --git a/Tests/InterfaceLinkLibrariesDirect/testStaticLibPluginExtra.c b/Tests/InterfaceLinkLibrariesDirect/testStaticLibPluginExtra.c
deleted file mode 100644
index 11fe0f8..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testStaticLibPluginExtra.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern int testStaticLibWithPlugin2(void);
-int testStaticLibPluginExtra(void)
-{
-  return testStaticLibWithPlugin2();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPlugin1.c b/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPlugin1.c
deleted file mode 100644
index 5e75dce..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPlugin1.c
+++ /dev/null
@@ -1,4 +0,0 @@
-int testStaticLibWithPlugin1(void)
-{
-  return 0;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPlugin2.c b/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPlugin2.c
deleted file mode 100644
index 74ac1ae..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPlugin2.c
+++ /dev/null
@@ -1,4 +0,0 @@
-int testStaticLibWithPlugin2(void)
-{
-  return 0;
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPluginBad1.c b/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPluginBad1.c
deleted file mode 100644
index b41abc9..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPluginBad1.c
+++ /dev/null
@@ -1,6 +0,0 @@
-/* Produce an error if if the object compiled from this source is used.  */
-extern int testStaticLibWithPlugin_linked_before_testStaticLibPlugin(void);
-int testStaticLibPlugin(void)
-{
-  return testStaticLibWithPlugin_linked_before_testStaticLibPlugin();
-}
diff --git a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPluginBad2.c b/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPluginBad2.c
deleted file mode 100644
index 43337a5..0000000
--- a/Tests/InterfaceLinkLibrariesDirect/testStaticLibWithPluginBad2.c
+++ /dev/null
@@ -1,7 +0,0 @@
-/* Produce an error if if the object compiled from this source is used.  */
-extern int testStaticLibWithPlugin_linked_before_testStaticLibPluginExtra(
-  void);
-int testStaticLibPluginExtra(void)
-{
-  return testStaticLibWithPlugin_linked_before_testStaticLibPluginExtra();
-}
diff --git a/Tests/ObjectLibrary/Transitive/BarMain.c b/Tests/ObjectLibrary/Transitive/BarMain.c
deleted file mode 100644
index aec3e48..0000000
--- a/Tests/ObjectLibrary/Transitive/BarMain.c
+++ /dev/null
@@ -1,6 +0,0 @@
-extern int BarObject1(void);
-
-int main(void)
-{
-  return BarObject1();
-}
diff --git a/Tests/ObjectLibrary/Transitive/BarObject1.c b/Tests/ObjectLibrary/Transitive/BarObject1.c
deleted file mode 100644
index 2f68386..0000000
--- a/Tests/ObjectLibrary/Transitive/BarObject1.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern int BarObject2(void);
-int BarObject1(void)
-{
-  return BarObject2();
-}
diff --git a/Tests/ObjectLibrary/Transitive/BarObject2.c b/Tests/ObjectLibrary/Transitive/BarObject2.c
deleted file mode 100644
index 881c64a..0000000
--- a/Tests/ObjectLibrary/Transitive/BarObject2.c
+++ /dev/null
@@ -1,5 +0,0 @@
-extern int BarObject3(void);
-int BarObject2(void)
-{
-  return BarObject3();
-}
diff --git a/Tests/ObjectLibrary/Transitive/BarObject3.c b/Tests/ObjectLibrary/Transitive/BarObject3.c
deleted file mode 100644
index e557dbc..0000000
--- a/Tests/ObjectLibrary/Transitive/BarObject3.c
+++ /dev/null
@@ -1,4 +0,0 @@
-int BarObject3(void)
-{
-  return 0;
-}
diff --git a/Tests/ObjectLibrary/Transitive/CMakeLists.txt b/Tests/ObjectLibrary/Transitive/CMakeLists.txt
index 17247eb..e9f57d4 100644
--- a/Tests/ObjectLibrary/Transitive/CMakeLists.txt
+++ b/Tests/ObjectLibrary/Transitive/CMakeLists.txt
@@ -9,17 +9,3 @@ add_library(FooObject2 OBJECT FooObject.c)
 target_link_libraries(FooObject2 INTERFACE FooStatic)
 add_executable(Transitive2 Transitive.c)
 target_link_libraries(Transitive2 PRIVATE FooObject2)
-
-add_library(FooObjectDirect OBJECT FooObject.c)
-add_library(FooStaticDirect STATIC FooStatic.c)
-set_property(TARGET FooStaticDirect PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT FooObjectDirect)
-add_executable(TransitiveDirect Transitive.c)
-target_link_libraries(TransitiveDirect PRIVATE FooStaticDirect)
-
-add_library(BarObject1 OBJECT BarObject1.c)
-add_library(BarObject2 OBJECT BarObject2.c)
-add_library(BarObject3 OBJECT BarObject3.c)
-set_property(TARGET BarObject1 PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT BarObject2)
-set_property(TARGET BarObject2 PROPERTY INTERFACE_LINK_LIBRARIES_DIRECT BarObject3)
-add_executable(BarMain BarMain.c)
-target_link_libraries(BarMain PRIVATE BarObject1)