Qt4: Add module dependencies to the IMPORTED targets

This means for example, that consumers can use:

 target_link_libraries(foo ${QT_QTGUI_LIBRARIES})

instead of also needing to specify all 'public' dependencies:

 target_link_libraries(foo ${QT_QTGUI_LIBRARIES} ${QT_QTCORE_LIBRARIES} )

when using the IMPORTED targets.  Also populate the
IMPORTED_LINK_DEPENDENT_LIBRARIES property so CMake can help the linker
find shared library dependencies.

3 files changed, 45 insertions, 0 deletions

diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index f443b5b..924ff38 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -989,6 +989,21 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
       )
     list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/QtAutomoc")
   endif()
+  if(QT4_WORKS AND QT_QTGUI_FOUND)
+    add_test(Qt4Targets ${CMAKE_CTEST_COMMAND}
+      --build-and-test
+      "${CMake_SOURCE_DIR}/Tests/Qt4Targets"
+      "${CMake_BINARY_DIR}/Tests/Qt4Targets"
+      --build-generator ${CMAKE_TEST_GENERATOR}
+      --build-project Qt4Targets
+      --build-makeprogram ${CMAKE_TEST_MAKEPROGRAM}
+      --build-exe-dir "${CMake_BINARY_DIR}/Tests/Qt4Targets"
+      --force-new-ctest-process
+      --build-options -DQT_QMAKE_EXECUTABLE:FILEPATH=${QT_QMAKE_EXECUTABLE}
+      --test-command ${CMAKE_CTEST_COMMAND} -V
+      )
+    list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/Qt4Targets")
+  endif()
 
   add_test(ExternalProject ${CMAKE_CTEST_COMMAND}
     --build-and-test
diff --git a/Tests/Qt4Targets/CMakeLists.txt b/Tests/Qt4Targets/CMakeLists.txt
new file mode 100644
index 0000000..3adff48
--- /dev/null
+++ b/Tests/Qt4Targets/CMakeLists.txt
@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 2.8)
+
+project(Qt4Targets)
+
+find_package(Qt4 REQUIRED)
+
+include_directories(${QT_INCLUDES})
+
+add_executable(Qt4Targets WIN32 main.cpp)
+target_link_libraries(Qt4Targets Qt4::QtGui)
+
+if (WIN32)
+  target_link_libraries(Qt4Targets Qt4::qtmain)
+endif()
diff --git a/Tests/Qt4Targets/main.cpp b/Tests/Qt4Targets/main.cpp
new file mode 100644
index 0000000..f4890fa
--- /dev/null
+++ b/Tests/Qt4Targets/main.cpp
@@ -0,0 +1,16 @@
+
+#include <QApplication>
+#include <QWidget>
+
+#include <QString>
+
+int main(int argc, char **argv)
+{
+  QApplication app(argc, argv);
+
+  QWidget w;
+  w.setWindowTitle(QString::fromLatin1("SomeTitle"));
+  w.show();
+
+  return 0;
+}