build: Use more precompiled headers to reduce build time by around 50% (#1740)

Author: slurmlord

Core/Libraries/Source/WWVegas/WWLib/CMakeLists.txt

@@ -169,6 +169,15 @@ target_include_directories(core_wwlib PUBLIC
     ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
+target_precompile_headers(core_wwlib PRIVATE
+    always.h
+    STLUtils.h
+    win.h
+    WWCommon.h
+    wwstring.h
+    <windows.h>
+)
+
 target_link_libraries(core_wwlib PRIVATE
     core_wwcommon
     corei_always

Core/Libraries/Source/debug/CMakeLists.txt

@@ -1,6 +1,4 @@
 set(DEBUG_SRC
-    "_pch.cpp"
-    "_pch.h"
     "debug_cmd.cpp"
     "debug_cmd.h"
     "debug_debug.cpp"
@@ -17,7 +15,6 @@ set(DEBUG_SRC
     "debug_macro.h"
     "debug_stack.cpp"
     "debug_stack.h"
-    "debug.cpp"
     "debug.h"
     "internal_except.h"
     "internal_io.h"
@@ -32,6 +29,14 @@ target_include_directories(core_debug INTERFACE
     ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
+target_precompile_headers(core_debug PRIVATE
+    "debug.h"
+    "internal.h"
+    "internal_except.h"
+    "internal_io.h"
+    <windows.h>
+)
+
 target_link_libraries(core_debug PRIVATE
     core_config
     core_wwcommon

Core/Libraries/Source/debug/_pch.cpp

@@ -26,7 +26,10 @@
 //
 // Debug command group 'debug'
 //////////////////////////////////////////////////////////////////////////////
-#include "_pch.h"
+#include "debug.h"
+#include "debug_cmd.h"
+#include "internal.h"
+#include <windows.h>
 #include <process.h>
 
 bool DebugCmdInterfaceDebug::Execute(class Debug& dbg, const char *cmd,

Core/Libraries/Source/debug/_pch.h

@@ -26,8 +26,12 @@
 //
 // Debug class implementation
 //////////////////////////////////////////////////////////////////////////////
-#include "_pch.h"
+#include "debug.h"
+#include "internal.h"
+#include "internal_except.h"
+#include "internal_io.h"
 #include <stdlib.h>
+#include <windows.h>
 #include <WWCommon.h>
 #include <new>      // needed for placement new prototype
 

Core/Libraries/Source/debug/debug.cpp

@@ -26,7 +26,9 @@
 //
 // Unhandled exception handler
 //////////////////////////////////////////////////////////////////////////////
-#include "_pch.h"
+#include "debug.h"
+#include "internal_except.h"
+#include <windows.h>
 #include <commctrl.h>
 
 DebugExceptionhandler::DebugExceptionhandler(void)

Core/Libraries/Source/debug/debug_cmd.cpp

@@ -26,7 +26,6 @@
 //
 // DebugGetDefaultCommands function
 //////////////////////////////////////////////////////////////////////////////
-#include "_pch.h"
 
 // this function has its own file so that it can be 'overridden'
 // by another program using the Debug module

Core/Libraries/Source/debug/debug_debug.cpp

@@ -26,7 +26,8 @@
 //
 // Implementation of internal code
 //////////////////////////////////////////////////////////////////////////////
-#include "_pch.h"
+#include "debug.h"
+#include <windows.h>
 
 void DebugInternalAssert(const char *file, int line, const char *expr)
 {