Revert "Add a way to exclude INTERFACE properties from exported targets."

This reverts commit 2c3654c3de.

The removal of some tests added in commit 77cecb77 (Add includes and compile
definitions with target_link_libraries., 2012-11-05) are also squashed
into this commit.

Source/cmExportFileGenerator.cxx

@@ -264,7 +264,6 @@ void cmExportFileGenerator::GenerateInterfaceProperties(cmTarget *target,
 {
   if (!properties.empty())
     {
-    os << "if(NOT ${CMAKE_FIND_PACKAGE_NAME}_NO_INTERFACES)\n";
     std::string targetName = this->Namespace;
     targetName += target->GetName();
     os << "set_target_properties(" << targetName << " PROPERTIES\n";
@@ -273,7 +272,7 @@ void cmExportFileGenerator::GenerateInterfaceProperties(cmTarget *target,
       {
       os << "  " << pi->first << " \"" << pi->second << "\"\n";
       }
-    os << "  )\nendif()\n\n";
+    os << ")\n\n";
     }
 }
 

Source/cmFindPackageCommand.cxx

@@ -376,27 +376,6 @@ void cmFindPackageCommand::GenerateDocumentation()
     "The package configuration file may set <package>_FOUND to false "
     "to tell find_package that component requirements are not satisfied."
     "\n"
-    "Targets exported by the install() command may have additional INTERFACE "
-    "properties set for include directories, compile definitions etc.  As "
-    "these may create a backward compatibility concern for consumers of "
-    "existing projects, it is possible to set the <package>_NO_INTERFACES "
-    "variable to disable populating those interfaces.  It is possible to "
-    "emulate a version-based policy for whether the interfaces should be "
-    "enabled in the config file before including the imported targets file. "
-    "This allows consumers to decide when to enable the new interfaces when "
-    "upgrading.  The upstream project is responsible for adding code similar "
-    "to this in the version which generates the INTERFACE content:\n"
-    "  if(${CMAKE_FIND_PACKAGE_NAME}_FIND_VERSION VERSION_LESS 2.3\n"
-    "      AND NOT ${CMAKE_FIND_PACKAGE_NAME}_INTERFACES)\n"
-    "    set(${CMAKE_FIND_PACKAGE_NAME}_NO_INTERFACES 1)\n"
-    "  endif()\n"
-    "  include(\"${CMAKE_CURRENT_LIST_DIR}/<package>Targets.cmake\")\n"
-    "\n"
-    "Downstream users may then choose to use the new interfaces by finding "
-    "the newer version of upstream.  They can also choose to not use the new "
-    "interfaces by setting <package>_INTERFACES to false before finding the "
-    "package.\n"
-    "\n"
     "See the cmake_policy() command documentation for discussion of the "
     "NO_POLICY_SCOPE option."
     ;

Tests/ExportImport/Import/CMakeLists.txt

@@ -17,8 +17,3 @@ add_executable(imp_testTransExe1 imp_testTransExe1.c)
 target_link_libraries(imp_testTransExe1 imp_lib1)
 add_executable(imp_testTransExe1b imp_testTransExe1.c)
 target_link_libraries(imp_testTransExe1b imp_lib1b)
-
-# Test package INTERFACE controls
-add_subdirectory(package_old_old)
-add_subdirectory(package_new_old)
-add_subdirectory(package_new_new)

Tests/ExportImport/Import/package_new_new/CMakeLists.txt

@@ -1,23 +0,0 @@
-
-cmake_minimum_required(VERSION 2.8)
-
-find_package(testLibRequired 2.5 REQUIRED)
-
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/main.cpp"
-  "
-#include \"testSharedLibRequired.h\"
-int main(int argc, char **argv)
-{
-  TestSharedLibRequired req;
-  return req.foo();
-}
-"
-)
-
-get_target_property(prop Req::testSharedLibRequired INTERFACE_INCLUDE_DIRECTORIES)
-if (NOT prop)
-  message(SEND_ERROR "Interface of Req::testSharedLibRequired should not be empty")
-endif()
-
-add_executable(new_new_test "${CMAKE_CURRENT_BINARY_DIR}/main.cpp")
-target_link_libraries(new_new_test Req::testSharedLibRequired)

Tests/ExportImport/Import/package_new_old/CMakeLists.txt

@@ -1,24 +0,0 @@
-
-cmake_minimum_required(VERSION 2.8)
-
-find_package(testLibRequired 2.5 REQUIRED)
-
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/main.cpp"
-  "
-#include \"testSharedLibRequired.h\"
-int main(int argc, char **argv)
-{
-  TestSharedLibRequired req;
-  return req.foo();
-}
-"
-)
-
-get_target_property(prop Req::testSharedLibRequired INTERFACE_INCLUDE_DIRECTORIES)
-if ("${prop}" STREQUAL "")
-  message(SEND_ERROR "Interface of Req::testSharedLibRequired should not be empty")
-endif()
-
-add_executable(new_old_test "${CMAKE_CURRENT_BINARY_DIR}/main.cpp")
-target_link_libraries(new_old_test Req::testSharedLibRequired)
-include_directories(${testLibRequired_INCLUDE_DIRS})

Tests/ExportImport/Import/package_old_old/CMakeLists.txt

@@ -1,24 +0,0 @@
-
-cmake_minimum_required(VERSION 2.8)
-
-find_package(testLibRequired 2.1 REQUIRED)
-
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/main.cpp"
-  "
-#include \"testSharedLibRequired.h\"
-int main(int argc, char **argv)
-{
-  TestSharedLibRequired req;
-  return req.foo();
-}
-"
-)
-
-get_target_property(prop Req::testSharedLibRequired INTERFACE_INCLUDE_DIRECTORIES)
-if (prop)
-  message(SEND_ERROR "Interface of Req::testSharedLibRequired should be empty, but is ${prop}")
-endif()
-
-add_executable(old_old_test "${CMAKE_CURRENT_BINARY_DIR}/main.cpp")
-target_link_libraries(old_old_test Req::testSharedLibRequired)
-include_directories(${testLibRequired_INCLUDE_DIRS})