From 09996b852b9ab09ab1ce936d2abc0aea9d141ffe Mon Sep 17 00:00:00 2001
From: Pasukhin Dmitry <dpasukhi@opencascade.com>
Date: Fri, 23 Jan 2026 19:55:58 +0000
Subject: [PATCH] Foundation Classes - Extend precompiled headers (#1029)

- Added precompiled header file for TKBool toolkit with commonly used headers
- Extended TKDESTEP precompiled headers with Interface_EntityIterator.hxx
- Configured Google Test to use precompiled headers when BUILD_USE_PCH is enabled
---
 adm/cmake/occt_gtest.cmake                   |  5 +++++
 src/DataExchange/TKDESTEP/TKDESTEP_pch.hxx   |  1 +
 src/ModelingAlgorithms/TKBool/CMakeLists.txt |  3 +++
 src/ModelingAlgorithms/TKBool/FILES.cmake    |  1 +
 src/ModelingAlgorithms/TKBool/TKBool_pch.hxx | 21 ++++++++++++++++++++
 5 files changed, 31 insertions(+)
 create mode 100644 src/ModelingAlgorithms/TKBool/TKBool_pch.hxx

diff --git a/adm/cmake/occt_gtest.cmake b/adm/cmake/occt_gtest.cmake
index be7c7c7333..4103384fe5 100644
--- a/adm/cmake/occt_gtest.cmake
+++ b/adm/cmake/occt_gtest.cmake
@@ -29,6 +29,11 @@ function(OCCT_INIT_GTEST)
 
   target_compile_definitions(${TEST_PROJECT_NAME} PRIVATE GTEST_LINKED_AS_SHARED_LIBRARY=1)
 
+  # Configure precompiled headers for Google Test
+  if (BUILD_USE_PCH)
+    target_precompile_headers(${TEST_PROJECT_NAME} PRIVATE <gtest/gtest.h>)
+  endif()
+
   # Link with all active toolkits that are libraries
   foreach(TOOLKIT ${BUILD_TOOLKITS})
     if(TARGET ${TOOLKIT})
diff --git a/src/DataExchange/TKDESTEP/TKDESTEP_pch.hxx b/src/DataExchange/TKDESTEP/TKDESTEP_pch.hxx
index bc0b27f834..c574bc18fd 100644
--- a/src/DataExchange/TKDESTEP/TKDESTEP_pch.hxx
+++ b/src/DataExchange/TKDESTEP/TKDESTEP_pch.hxx
@@ -14,6 +14,7 @@
 #ifndef TKDESTEP_PCH_H
 #define TKDESTEP_PCH_H
 
+#include <Interface_EntityIterator.hxx>
 #include <StepData_StepReaderData.hxx>
 #include <StepData_StepWriter.hxx>
 #include <StepGeom_GeometricRepresentationItem.hxx>
diff --git a/src/ModelingAlgorithms/TKBool/CMakeLists.txt b/src/ModelingAlgorithms/TKBool/CMakeLists.txt
index 9bb388fdca..7401d7c7fa 100644
--- a/src/ModelingAlgorithms/TKBool/CMakeLists.txt
+++ b/src/ModelingAlgorithms/TKBool/CMakeLists.txt
@@ -1,3 +1,6 @@
 project(TKBool)
 
 OCCT_INCLUDE_CMAKE_FILE (adm/cmake/occt_toolkit)
+
+# Add the precompiled header
+ADD_PRECOMPILED_HEADER(TKBool "TKBool_pch.hxx" FALSE)
diff --git a/src/ModelingAlgorithms/TKBool/FILES.cmake b/src/ModelingAlgorithms/TKBool/FILES.cmake
index 93f37d0e3c..265b580234 100644
--- a/src/ModelingAlgorithms/TKBool/FILES.cmake
+++ b/src/ModelingAlgorithms/TKBool/FILES.cmake
@@ -2,4 +2,5 @@
 set(OCCT_TKBool_FILES_LOCATION "${CMAKE_CURRENT_LIST_DIR}")
 
 set(OCCT_TKBool_FILES
+  TKBool_pch.hxx
 )
diff --git a/src/ModelingAlgorithms/TKBool/TKBool_pch.hxx b/src/ModelingAlgorithms/TKBool/TKBool_pch.hxx
new file mode 100644
index 0000000000..e23a4c2b6d
--- /dev/null
+++ b/src/ModelingAlgorithms/TKBool/TKBool_pch.hxx
@@ -0,0 +1,21 @@
+// Copyright (c) 2025 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef TKBOOL_PCH_H
+#define TKBOOL_PCH_H
+
+#include <TopOpeBRepBuild_define.hxx>
+#include <TopOpeBRepDS_define.hxx>
+#include <TopOpeBRepTool_PROJECT.hxx>
+
+#endif // TKBOOL_PCH_H