CMake|macOS: Added a build option to disable Qt deployment

It makes debug builds faster when macdeployqt is not run.
Instead, use @rpath to locate the local Qt frameworks.

doomsday/apps/plugins/PluginConfig.cmake

@@ -37,12 +37,17 @@ macro (deng_add_plugin target)
         set_property (TARGET ${target}
             APPEND PROPERTY COMPILE_OPTIONS -Wno-missing-braces
         )
+        set (_extraRPath)
+        if (NOT DENG_ENABLE_DEPLOYQT)
+            set (_extraRPath ${QT_LIBS})
+        endif ()
         set_target_properties (${target} PROPERTIES
             BUNDLE ON
             MACOSX_BUNDLE_INFO_PLIST ${DENG_SOURCE_DIR}/cmake/MacOSXPluginBundleInfo.plist.in
             BUILD_WITH_INSTALL_RPATH ON  # staging prevents CMake's own rpath fixing
-            INSTALL_RPATH "@executable_path/../Frameworks"
+            INSTALL_RPATH "@executable_path/../Frameworks;${_extraRPath}"
         )
+        set (_extraRPath)
         macx_set_bundle_name ("net.dengine.plugin.${target}")
         set (MACOSX_BUNDLE_BUNDLE_EXECUTABLE "${target}.bundle/Contents/MacOS/${target}")
         # Stage plugins for symlinking/copying into the client app later.
@@ -57,13 +62,15 @@ macro (deng_add_plugin target)
                 "${stage}/${target}.bundle"
         )
         # Fix the Qt framework install names manually.
-        deng_bundle_install_names (${target}
-            SCRIPT_NAME "qtlibs"
-            LD_PATH "@executable_path/../Frameworks"
-            QtCore.framework/Versions/5/QtCore
-            QtNetwork.framework/Versions/5/QtNetwork
-            VERBATIM
-        )
+        if (DENG_ENABLE_DEPLOYQT)
+            deng_bundle_install_names (${target}
+                SCRIPT_NAME "qtlibs"
+                LD_PATH "@executable_path/../Frameworks"
+                QtCore.framework/Versions/5/QtCore
+                QtNetwork.framework/Versions/5/QtNetwork
+                VERBATIM
+            )
+        endif ()
         deng_xcode_attribs (${target})
         deng_bundle_resources ()
     else ()

doomsday/cmake/Macros.cmake

@@ -112,17 +112,21 @@ endmacro (deng_cotire)
 
 macro (deng_target_rpath target)
     if (APPLE)
+        set (_extraRPath)
+        if (NOT DENG_ENABLE_DEPLOYQT)
+            # Not deployed; include the local Qt library path in @rpath.
+            set (_extraRPath "${QT_LIBS}")
+        endif ()
         set_target_properties (${target} PROPERTIES
-            INSTALL_RPATH "@loader_path/../Frameworks;@executable_path/../${DENG_INSTALL_LIB_DIR}"
+            INSTALL_RPATH "@loader_path/../Frameworks;@executable_path/../${DENG_INSTALL_LIB_DIR};${_extraRPath}"
         )
         if (${target} MATCHES "test_.*")
             # These won't be deployed, so we can use the full path.
-            qmake_query (_qtLibPath QT_INSTALL_LIBS)
             set_property (TARGET ${target} APPEND PROPERTY
-                INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${DENG_INSTALL_LIB_DIR};${CMAKE_INSTALL_PREFIX}/${DENG_INSTALL_PLUGIN_DIR};${_qtLibPath}"
+                INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${DENG_INSTALL_LIB_DIR};${CMAKE_INSTALL_PREFIX}/${DENG_INSTALL_PLUGIN_DIR};${QT_LIBS}"
             )
-            set (_qtLibPath)
         endif ()
+        set (_extraRPath)
     elseif (UNIX)
         set_property (TARGET ${target}
             PROPERTY INSTALL_RPATH
@@ -670,6 +674,9 @@ endfunction (deng_install_bundle_deps)
 # Run the Qt deploy utility on the target, resolving any local system
 # dependencies.
 function (deng_install_deployqt target)
+    if (NOT DENG_ENABLE_DEPLOYQT)
+        return ()
+    endif ()
     if (UNIX AND NOT APPLE)
         return () # No need to deploy Qt.
     endif ()

doomsday/cmake/Options.cmake

@@ -1,5 +1,5 @@
 # Source merging by default is enabled only for debug builds, or never with
-# multiconfiguration projects because all configurations must use the 
+# multiconfiguration projects because all configurations must use the
 # same set of source files.
 if (MSVC OR XCODE_VERSION)
     set (DENG_ENABLE_TURBO_DEFAULT OFF) # multiconfiguration projects
@@ -11,11 +11,12 @@ else ()
     endif ()
 endif ()
 
-option (DENG_ENABLE_TURBO "Enable/disable Turbo mode (source merging)" 
+option (DENG_ENABLE_TURBO    "Enable/disable Turbo mode (source merging)"
         ${DENG_ENABLE_TURBO_DEFAULT})
-option (DENG_ENABLE_GUI   "Enable/disable the client and all GUI related functionality" ON)
-option (DENG_ENABLE_SDK   "Enable/disable installation of the Doomsday 2 SDK" ON)
-option (DENG_ENABLE_TOOLS "Compile the Doomsday tools" ON)
+option (DENG_ENABLE_GUI      "Enable/disable the client and all GUI related functionality" ON)
+option (DENG_ENABLE_SDK      "Enable/disable installation of the Doomsday 2 SDK" ON)
+option (DENG_ENABLE_TOOLS    "Compile the Doomsday tools" ON)
+option (DENG_ENABLE_DEPLOYQT "Enable/disable the *deployqt tool" ON)
 
 if (CCACHE_FOUND OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     # GCC seems to have trouble with cotire when using C++11.