Userland: Properly populate GENERATED_SOURCES

We previously put the generated headers in SOURCES, which did not mark
them as GENERATED (and did not produce a proper dependency).
This commit moves all generated headers into GENERATED_SOURCES, and
removes useless header SOURCES.

Userland/Games/GameOfLife/CMakeLists.txt

@@ -10,9 +10,12 @@ set(SOURCES
     main.cpp
     Board.cpp
     BoardWidget.cpp
-    GameOfLifeGML.h
     Pattern.cpp
 )
 
+set(GENERATED_SOURCES
+    GameOfLifeGML.h
+)
+
 serenity_app(GameOfLife ICON app-gameoflife)
 target_link_libraries(GameOfLife LibGUI LibMain LibDesktop)

Userland/Games/Hearts/CMakeLists.txt

@@ -13,6 +13,9 @@ set(SOURCES
     Player.cpp
     ScoreCard.cpp
     SettingsDialog.cpp
+)
+
+set(GENERATED_SOURCES
     HeartsGML.h
 )
 

Userland/Games/Minesweeper/CMakeLists.txt

@@ -8,12 +8,15 @@ compile_gml(MinesweeperCustomGameWindow.gml MinesweeperCustomGameWindowGML.h min
 compile_gml(MinesweeperWindow.gml MinesweeperWindowGML.h minesweeper_window_gml)
 
 set(SOURCES
-    MinesweeperCustomGameWindowGML.h
-    MinesweeperWindowGML.h
     CustomGameDialog.cpp
     Field.cpp
     main.cpp
 )
 
+set(GENERATED_SOURCES
+    MinesweeperCustomGameWindowGML.h
+    MinesweeperWindowGML.h
+)
+
 serenity_app(Minesweeper ICON app-minesweeper)
 target_link_libraries(Minesweeper LibGUI LibConfig LibMain LibDesktop)

Userland/Games/Solitaire/CMakeLists.txt

@@ -9,6 +9,9 @@ compile_gml(Solitaire.gml SolitaireGML.h solitaire_gml)
 set(SOURCES
     Game.cpp
     main.cpp
+)
+
+set(GENERATED_SOURCES
     SolitaireGML.h
 )
 

Userland/Games/Spider/CMakeLists.txt

@@ -9,6 +9,9 @@ compile_gml(Spider.gml SpiderGML.h spider_gml)
 set(SOURCES
     Game.cpp
     main.cpp
+)
+
+set(GENERATED_SOURCES
     SpiderGML.h
 )