cmake: Find Cups and enable its plugin

Change-Id: I44bf176587331d86eb147d106f28deb0a6618ab4
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

src/plugins/CMakeLists.txt

@@ -23,6 +23,6 @@ if (QT_FEATURE_widgets)
 #     TODO add_subdirectory(styles)
 endif()
 
-if (NOT WINRT AND QT_FEATURE_printsupport)
+if (NOT WINRT AND TARGET PrintSupport)
-#     TODO add_subdirectory(printsupport)
+    add_subdirectory(printsupport)
 endif()

src/plugins/printsupport/CMakeLists.txt

@@ -0,0 +1,11 @@
+if (APPLE_OSX)
+#     TODO add_subdirectory(cocoa)
+endif()
+
+if (WIN32)
+#     TODO add_subdirectory(windows)
+endif()
+
+if (UNIX AND NOT APPLE AND QT_FEATURE_cups)
+    add_subdirectory(cups)
+endif()

src/plugins/printsupport/cups/CMakeLists.txt

@@ -0,0 +1,28 @@
+# Generated from cups.pro.
+
+find_package(Cups)
+
+#####################################################################
+## cupsprintersupport Plugin:
+#####################################################################
+
+add_qt_plugin(cupsprintersupport
+    TYPE printsupport
+    SOURCES
+        main.cpp
+        qcupsprintengine.cpp qcupsprintengine_p.h
+        qcupsprintersupport.cpp qcupsprintersupport_p.h
+        qppdprintdevice.cpp qppdprintdevice.h
+    INCLUDE_DIRECTORIES
+        ../../../printsupport/kernel
+    LIBRARIES
+        Qt::CorePrivate
+        Qt::GuiPrivate
+        Qt::PrintSupport
+        Qt::PrintSupportPrivate
+        Cups::Cups
+    # MODULE = "cupsprintersupport"
+    # OTHER_FILES = "cups.json"
+    # PLUGIN_CLASS_NAME = "QCupsPrinterSupportPlugin"
+    # _LOADED = "qt_plugin"
+)

src/printsupport/configure.cmake

@@ -6,6 +6,8 @@
 
 #### Libraries
 
+find_package(Cups)
+set_package_properties(Cups PROPERTIES TYPE OPTIONAL)
 
 
 #### Tests
@@ -18,7 +20,7 @@ qt_feature("cups" PUBLIC PRIVATE
     SECTION "Painting"
     LABEL "CUPS"
     PURPOSE "Provides support for the Common Unix Printing System."
-    CONDITION libs.cups AND QT_FEATURE_printer AND QT_FEATURE_datestring OR FIXME
+    CONDITION Cups_FOUND AND QT_FEATURE_printer AND QT_FEATURE_datestring
 )
 qt_feature_definition("cups" "QT_NO_CUPS" NEGATE VALUE "1")
 qt_feature("cupsjobwidget" PUBLIC PRIVATE

util/cmake/configurejson2cmake.py

@@ -49,6 +49,7 @@ def map_library(lib: str) -> Union[str, LibraryMapping, List[str]]:
     libmap = {
        'atspi': 'ATSPI2',
        'corewlan': None, # Framework
+       'cups': 'Cups',
        'double-conversion': 'WrapDoubleConversion',
        'drm': 'Libdrm',
        'egl': LibraryMapping(package="OpenGL", resultVariable="OpenGL_EGL"),