From a059456d860c7d019bbcf703699fe90fc01b8b27 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20Reitb=C3=B6ck?= <mrpilot@gmx.net>
Date: Sun, 21 Sep 2025 17:19:17 +0200
Subject: [PATCH] Draft: use CMake to generate precompiled headers on all
 platforms

"Professional CMake" book suggest the following:

"Targets should build successfully with or without compiler support for precompiled headers. It
 should be considered an optimization, not a requirement. In particular, do not explicitly include a
 precompile header (e.g. stdafx.h) in the source code, let CMake force-include an automatically
 generated precompile header on the compiler command line instead. This is more portable across
 the major compilers and is likely to be easier to maintain. It will also avoid warnings being
 generated from certain code checking tools like iwyu (include what you use)."

Therefore, removed the "#include <PreCompiled.h>" from sources, also
there is no need for the "#ifdef _PreComp_" anymore
---
 src/Mod/Draft/App/AppDraftUtils.cpp   |  1 -
 src/Mod/Draft/App/AppDraftUtilsPy.cpp |  1 -
 src/Mod/Draft/App/CMakeLists.txt      |  8 +++++++-
 src/Mod/Draft/App/PreCompiled.cpp     | 23 -----------------------
 4 files changed, 7 insertions(+), 26 deletions(-)
 delete mode 100644 src/Mod/Draft/App/PreCompiled.cpp

diff --git a/src/Mod/Draft/App/AppDraftUtils.cpp b/src/Mod/Draft/App/AppDraftUtils.cpp
index 3bfddd9884..a6742cd5fd 100644
--- a/src/Mod/Draft/App/AppDraftUtils.cpp
+++ b/src/Mod/Draft/App/AppDraftUtils.cpp
@@ -20,7 +20,6 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Console.h>
 #include <Base/Interpreter.h>
diff --git a/src/Mod/Draft/App/AppDraftUtilsPy.cpp b/src/Mod/Draft/App/AppDraftUtilsPy.cpp
index a0b831c097..a0ab38b580 100644
--- a/src/Mod/Draft/App/AppDraftUtilsPy.cpp
+++ b/src/Mod/Draft/App/AppDraftUtilsPy.cpp
@@ -20,7 +20,6 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "PreCompiled.h"
 
 #include <Base/Console.h>
 #include <Base/Interpreter.h>
diff --git a/src/Mod/Draft/App/CMakeLists.txt b/src/Mod/Draft/App/CMakeLists.txt
index 993cabed86..da38dcbce3 100644
--- a/src/Mod/Draft/App/CMakeLists.txt
+++ b/src/Mod/Draft/App/CMakeLists.txt
@@ -11,11 +11,17 @@ set(DraftUtils_LIBS
 SET(DraftUtils_SRCS
     AppDraftUtils.cpp
     AppDraftUtilsPy.cpp
-    PreCompiled.cpp
     PreCompiled.h
 )
 
 add_library(DraftUtils SHARED ${DraftUtils_SRCS})
+
+if(FREECAD_USE_PCH)
+    target_precompile_headers(DraftUtils PRIVATE
+            $<$<COMPILE_LANGUAGE:CXX>:"${CMAKE_CURRENT_LIST_DIR}/PreCompiled.h">
+    )
+endif(FREECAD_USE_PCH)
+
 target_include_directories(
     DraftUtils
     PRIVATE
diff --git a/src/Mod/Draft/App/PreCompiled.cpp b/src/Mod/Draft/App/PreCompiled.cpp
deleted file mode 100644
index 2432ed0264..0000000000
--- a/src/Mod/Draft/App/PreCompiled.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-/***************************************************************************
- *   Copyright (c) 2015 Yorik van Havre <yorik@uncreated.net>              *
- *                                                                         *
- *   This file is part of the FreeCAD CAx development system.              *
- *                                                                         *
- *   This library is free software; you can redistribute it and/or         *
- *   modify it under the terms of the GNU Library General Public           *
- *   License as published by the Free Software Foundation; either          *
- *   version 2 of the License, or (at your option) any later version.      *
- *                                                                         *
- *   This library  is distributed in the hope that it will be useful,      *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU Library General Public License for more details.                  *
- *                                                                         *
- *   You should have received a copy of the GNU Library General Public     *
- *   License along with this library; see the file COPYING.LIB. If not,    *
- *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
- *   Suite 330, Boston, MA  02111-1307, USA                                *
- *                                                                         *
- ***************************************************************************/
-
-#include "PreCompiled.h"