Build perf: speed up bullet3 build by creating PCH files

examples/ThirdPartyLibs/Gwen/CMakeLists.txt

@@ -20,7 +20,16 @@ ADD_DEFINITIONS( -DGLEW_STATIC -DGWEN_COMPILE_STATIC -D_HAS_EXCEPTIONS=0 )
 FILE(GLOB gwen_SRCS "*.cpp" "Controls/*.cpp" "Controls/Dialog/*.cpp" "Controls/Dialogs/*.cpp" "Controls/Layout/*.cpp" "Controls/Property/*.cpp" "Input/*.cpp" "Platforms/*.cpp" "Renderers/*.cpp" "Skins/*.cpp")
 FILE(GLOB gwen_HDRS "*.h" "Controls/*.h" "Controls/Dialog/*.h" "Controls/Dialogs/*.h" "Controls/Layout/*.h" "Controls/Property/*.h" "Input/*.h" "Platforms/*.h" "Renderers/*.h" "Skins/*.h")
 
+# Add PCH source file
+SET(gwen_SRCS ${gwen_SRCS} GwenPCH.cpp)
+
 ADD_LIBRARY(gwen ${gwen_SRCS} ${gwen_HDRS})
+
+# Enable precompiled headers (CMake 3.16+)
+IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16.0")
+	TARGET_PRECOMPILE_HEADERS(gwen PRIVATE GwenPCH.h)
+ENDIF()
+
 IF (BUILD_SHARED_LIBS)
 IF(WIN32 OR APPLE)
   target_link_libraries(gwen ${OPENGL_gl_LIBRARY})

examples/ThirdPartyLibs/Gwen/GwenPCH.cpp

@@ -0,0 +1,5 @@
+/*
+GWEN Library - Precompiled Header Implementation
+*/
+
+#include "GwenPCH.h"

examples/ThirdPartyLibs/Gwen/GwenPCH.h

@@ -0,0 +1,29 @@
+/*
+GWEN Library - Precompiled Header
+*/
+
+#ifndef GWEN_PCH_H
+#define GWEN_PCH_H
+
+// Standard Library Headers - Most expensive
+#include <string>
+#include <vector>
+#include <map>
+#include <list>
+#include <set>
+#include <algorithm>
+#include <cmath>
+#include <cassert>
+#include <sstream>
+#include <iostream>
+
+// Windows headers (if on Windows) - without LEAN_AND_MEAN for Gwen
+#ifdef _WIN32
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <windows.h>
+#include <commdlg.h>
+#endif
+
+#endif // GWEN_PCH_H

src/Bullet3Collision/Bullet3CollisionPCH.cpp

@@ -0,0 +1,5 @@
+/*
+Bullet3 Collision - Precompiled Header Implementation
+*/
+
+#include "Bullet3CollisionPCH.h"

src/Bullet3Collision/Bullet3CollisionPCH.h

@@ -0,0 +1,13 @@
+/*
+Bullet3 Collision - Precompiled Header
+*/
+
+#ifndef BULLET3_COLLISION_PCH_H
+#define BULLET3_COLLISION_PCH_H
+
+// Standard Library Headers
+#include <vector>
+#include <cmath>
+#include <cassert>
+
+#endif // BULLET3_COLLISION_PCH_H

src/Bullet3Collision/CMakeLists.txt

@@ -4,6 +4,7 @@ INCLUDE_DIRECTORIES(
 )
 
 SET(Bullet3Collision_SRCS
+	Bullet3CollisionPCH.cpp
 	BroadPhaseCollision/b3DynamicBvh.cpp
 	BroadPhaseCollision/b3DynamicBvhBroadphase.cpp
 	BroadPhaseCollision/b3OverlappingPairCache.cpp
@@ -58,6 +59,12 @@ SET(Bullet3Collision_HDRS
 )
 
 ADD_LIBRARY(Bullet3Collision ${Bullet3Collision_SRCS} ${Bullet3Collision_HDRS})
+
+# Enable precompiled headers (CMake 3.16+)
+IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16.0")
+	TARGET_PRECOMPILE_HEADERS(Bullet3Collision PRIVATE Bullet3CollisionPCH.h)
+ENDIF()
+
 if (BUILD_SHARED_LIBS)
   target_link_libraries(Bullet3Collision Bullet3Geometry)
 endif ()

src/Bullet3Dynamics/Bullet3DynamicsPCH.cpp

@@ -0,0 +1,5 @@
+/*
+Bullet3 Dynamics - Precompiled Header Implementation
+*/
+
+#include "Bullet3DynamicsPCH.h"

src/Bullet3Dynamics/Bullet3DynamicsPCH.h

@@ -0,0 +1,13 @@
+/*
+Bullet3 Dynamics - Precompiled Header
+*/
+
+#ifndef BULLET3_DYNAMICS_PCH_H
+#define BULLET3_DYNAMICS_PCH_H
+
+// Standard Library Headers
+#include <vector>
+#include <cmath>
+#include <cassert>
+
+#endif // BULLET3_DYNAMICS_PCH_H

src/Bullet3Dynamics/CMakeLists.txt

@@ -4,6 +4,7 @@ INCLUDE_DIRECTORIES(
 )
 
 SET(Bullet3Dynamics_SRCS
+	Bullet3DynamicsPCH.cpp
 	b3CpuRigidBodyPipeline.cpp
 	ConstraintSolver/b3FixedConstraint.cpp
 	ConstraintSolver/b3Generic6DofConstraint.cpp
@@ -30,6 +31,12 @@ SET(Bullet3Dynamics_HDRS
 )
 
 ADD_LIBRARY(Bullet3Dynamics ${Bullet3Dynamics_SRCS} ${Bullet3Dynamics_HDRS})
+
+# Enable precompiled headers (CMake 3.16+)
+IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16.0")
+	TARGET_PRECOMPILE_HEADERS(Bullet3Dynamics PRIVATE Bullet3DynamicsPCH.h)
+ENDIF()
+
 if (BUILD_SHARED_LIBS)
   target_link_libraries(Bullet3Dynamics Bullet3Collision)
 endif ()

src/BulletCollision/BulletCollisionPCH.cpp

@@ -0,0 +1,6 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for BulletCollision - Implementation
+*/
+
+#include "BulletCollisionPCH.h"

src/BulletCollision/BulletCollisionPCH.h

@@ -0,0 +1,37 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for BulletCollision
+*/
+
+#ifndef BULLET_COLLISION_PCH_H
+#define BULLET_COLLISION_PCH_H
+
+// Standard Library Headers - Most expensive
+#include <string>
+#include <vector>
+#include <map>
+#include <algorithm>
+#include <cmath>
+#include <cassert>
+
+// Windows headers (if on Windows)
+#ifdef _WIN32
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <windows.h>
+#endif
+
+// Common Bullet LinearMath headers
+#include "LinearMath/btQuaternion.h"
+#include "LinearMath/btTransform.h"
+#include "LinearMath/btDefaultMotionState.h"
+#include "LinearMath/btQuickprof.h"
+#include "LinearMath/btIDebugDraw.h"
+#include "LinearMath/btSerializer.h"
+#include "LinearMath/btHashMap.h"
+
+#endif // BULLET_COLLISION_PCH_H

src/BulletCollision/CMakeLists.txt

@@ -1,6 +1,7 @@
 INCLUDE_DIRECTORIES( ${BULLET_PHYSICS_SOURCE_DIR}/src  )
 
 SET(BulletCollision_SRCS
+	BulletCollisionPCH.cpp
 	BroadphaseCollision/btAxisSweep3.cpp
 	BroadphaseCollision/btBroadphaseProxy.cpp
 	BroadphaseCollision/btCollisionAlgorithm.cpp
@@ -256,6 +257,12 @@ SET(BulletCollision_HDRS
 ADD_LIBRARY(BulletCollision ${BulletCollision_SRCS} ${BulletCollision_HDRS})
 SET_TARGET_PROPERTIES(BulletCollision PROPERTIES VERSION ${BULLET_VERSION})
 SET_TARGET_PROPERTIES(BulletCollision PROPERTIES SOVERSION ${BULLET_VERSION})
+
+# Enable precompiled headers (CMake 3.16+)
+IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16.0")
+	TARGET_PRECOMPILE_HEADERS(BulletCollision PRIVATE BulletCollisionPCH.h)
+ENDIF()
+
 IF (BUILD_SHARED_LIBS)
   TARGET_LINK_LIBRARIES(BulletCollision LinearMath)
 ENDIF (BUILD_SHARED_LIBS)

src/BulletDynamics/BulletDynamicsPCH.cpp

@@ -0,0 +1,6 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for BulletDynamics - Implementation
+*/
+
+#include "BulletDynamicsPCH.h"

src/BulletDynamics/BulletDynamicsPCH.h

@@ -0,0 +1,32 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for BulletDynamics
+*/
+
+#ifndef BULLET_DYNAMICS_PCH_H
+#define BULLET_DYNAMICS_PCH_H
+
+// Standard Library Headers - Most expensive
+#include <string>
+#include <vector>
+#include <map>
+#include <algorithm>
+#include <cmath>
+#include <cassert>
+
+// Windows headers (if on Windows)
+#ifdef _WIN32
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <windows.h>
+#endif
+
+// Common Bullet headers
+#include "btBulletCollisionCommon.h"
+#include "LinearMath/btHashMap.h"
+
+#endif // BULLET_DYNAMICS_PCH_H

src/BulletDynamics/CMakeLists.txt

@@ -3,6 +3,7 @@ INCLUDE_DIRECTORIES( ${BULLET_PHYSICS_SOURCE_DIR}/src  )
 
 
 SET(BulletDynamics_SRCS
+	BulletDynamicsPCH.cpp
 	Character/btKinematicCharacterController.cpp
 	ConstraintSolver/btConeTwistConstraint.cpp
 	ConstraintSolver/btContactConstraint.cpp
@@ -143,6 +144,12 @@ SET(BulletDynamics_HDRS
 ADD_LIBRARY(BulletDynamics ${BulletDynamics_SRCS} ${BulletDynamics_HDRS})
 SET_TARGET_PROPERTIES(BulletDynamics PROPERTIES VERSION ${BULLET_VERSION})
 SET_TARGET_PROPERTIES(BulletDynamics PROPERTIES SOVERSION ${BULLET_VERSION})
+
+# Enable precompiled headers (CMake 3.16+)
+IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16.0")
+	TARGET_PRECOMPILE_HEADERS(BulletDynamics PRIVATE BulletDynamicsPCH.h)
+ENDIF()
+
 IF (BUILD_SHARED_LIBS)
 	TARGET_LINK_LIBRARIES(BulletDynamics BulletCollision LinearMath)
 ENDIF (BUILD_SHARED_LIBS)

src/BulletSoftBody/BulletSoftBodyPCH.cpp

@@ -0,0 +1,6 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for BulletSoftBody - Implementation
+*/
+
+#include "BulletSoftBodyPCH.h"

src/BulletSoftBody/BulletSoftBodyPCH.h

@@ -0,0 +1,32 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for BulletSoftBody
+*/
+
+#ifndef BULLET_SOFT_BODY_PCH_H
+#define BULLET_SOFT_BODY_PCH_H
+
+// Standard Library Headers - Most expensive
+#include <string>
+#include <vector>
+#include <map>
+#include <algorithm>
+#include <cmath>
+#include <cassert>
+
+// Windows headers (if on Windows)
+#ifdef _WIN32
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <windows.h>
+#endif
+
+// Common Bullet headers
+#include "btBulletDynamicsCommon.h"
+#include "LinearMath/btHashMap.h"
+
+#endif // BULLET_SOFT_BODY_PCH_H

src/BulletSoftBody/CMakeLists.txt

@@ -7,6 +7,7 @@ ${BULLET_PHYSICS_SOURCE_DIR}/src
 #SUBDIRS( Solvers )
 
 SET(BulletSoftBody_SRCS
+	BulletSoftBodyPCH.cpp
 	btSoftBody.cpp
 	btSoftBodyConcaveCollisionAlgorithm.cpp
 	btSoftBodyHelpers.cpp
@@ -80,6 +81,12 @@ SET(BulletSoftBody_HDRS
 ADD_LIBRARY(BulletSoftBody  ${BulletSoftBody_SRCS} ${BulletSoftBody_HDRS})
 SET_TARGET_PROPERTIES(BulletSoftBody PROPERTIES VERSION ${BULLET_VERSION})
 SET_TARGET_PROPERTIES(BulletSoftBody PROPERTIES SOVERSION ${BULLET_VERSION})
+
+# Enable precompiled headers (CMake 3.16+)
+IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16.0")
+	TARGET_PRECOMPILE_HEADERS(BulletSoftBody PRIVATE BulletSoftBodyPCH.h)
+ENDIF()
+
 IF (BUILD_SHARED_LIBS)
 	TARGET_LINK_LIBRARIES(BulletSoftBody BulletDynamics)
 ENDIF (BUILD_SHARED_LIBS)

src/LinearMath/CMakeLists.txt

@@ -4,6 +4,7 @@ INCLUDE_DIRECTORIES(
 )
 
 SET(LinearMath_SRCS
+	LinearMathPCH.cpp
 	btAlignedAllocator.cpp
 	btConvexHull.cpp
 	btConvexHullComputer.cpp
@@ -58,6 +59,11 @@ ADD_LIBRARY(LinearMath ${LinearMath_SRCS} ${LinearMath_HDRS})
 SET_TARGET_PROPERTIES(LinearMath PROPERTIES VERSION ${BULLET_VERSION})
 SET_TARGET_PROPERTIES(LinearMath PROPERTIES SOVERSION ${BULLET_VERSION})
 
+# Enable precompiled headers (CMake 3.16+)
+IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.16.0")
+	TARGET_PRECOMPILE_HEADERS(LinearMath PRIVATE LinearMathPCH.h)
+ENDIF()
+
 IF (INSTALL_LIBS)
 	IF (NOT INTERNAL_CREATE_DISTRIBUTABLE_MSVC_PROJECTFILES)
 		#FILES_MATCHING requires CMake 2.6

src/LinearMath/LinearMathPCH.cpp

@@ -0,0 +1,6 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for LinearMath - Implementation
+*/
+
+#include "LinearMathPCH.h"

src/LinearMath/LinearMathPCH.h

@@ -0,0 +1,27 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Precompiled Header for LinearMath
+*/
+
+#ifndef LINEAR_MATH_PCH_H
+#define LINEAR_MATH_PCH_H
+
+// Standard Library Headers - Most expensive
+#include <string>
+#include <vector>
+#include <cmath>
+#include <cassert>
+#include <algorithm>
+
+// Windows headers (if on Windows)
+#ifdef _WIN32
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <windows.h>
+#endif
+
+#endif // LINEAR_MATH_PCH_H