Simplify the build script to eliminate unused variable.

As the enable_pch() macro is not being called, there is no need to set SOURCE_FILES variable at this scope.

Source/Engine/Audio/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/STB PARENT_SCOPE)

Source/Engine/Container/CMakeLists.txt

@@ -23,5 +23,4 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)

Source/Engine/Core/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 if (NOT IOS AND NOT ANDROID AND NOT RASPI)

Source/Engine/Engine/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_INCLUDE_DIRS_ONLY ${ENGINE_INCLUDE_DIRS_ONLY} ../ThirdParty/Bullet/src ../ThirdParty/kNet/include PARENT_SCOPE)

Source/Engine/Graphics/CMakeLists.txt

@@ -30,8 +30,7 @@ else ()
     file (GLOB SYS_CPP_FILES Direct3D9/*.cpp)
     file (GLOB SYS_H_FILES Direct3D9/*.h)
 endif ()
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES} ${SYS_CPP_FILES} ${SYS_H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} ${SYS_CPP_FILES} ${SYS_H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LINK_LIBS_ONLY ${ENGINE_LINK_LIBS_ONLY} SDL PARENT_SCOPE)

Source/Engine/IO/CMakeLists.txt

@@ -26,8 +26,7 @@ file (GLOB H_FILES *.h)
 if (APPLE AND NOT IOS)
     file (GLOB C_FILES *.m)
 endif()
-set (SOURCE_FILES ${CPP_FILES} ${C_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${C_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/LZ4 PARENT_SCOPE)

Source/Engine/Input/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LINK_LIBS_ONLY ${ENGINE_LINK_LIBS_ONLY} SDL PARENT_SCOPE)

Source/Engine/Math/CMakeLists.txt

@@ -23,5 +23,4 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)

Source/Engine/Navigation/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/Recast/include ../ThirdParty/Detour/include PARENT_SCOPE)

Source/Engine/Network/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/kNet/include ../ThirdParty/Civetweb/include PARENT_SCOPE)

Source/Engine/Physics/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/Bullet/src ../ThirdParty/StanHull PARENT_SCOPE)

Source/Engine/Resource/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/JO ../ThirdParty/PugiXml/src ../ThirdParty/STB PARENT_SCOPE)

Source/Engine/Scene/CMakeLists.txt

@@ -23,5 +23,4 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)

Source/Engine/Script/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/AngelScript/include PARENT_SCOPE)

Source/Engine/UI/CMakeLists.txt

@@ -23,8 +23,7 @@
 # Define source files
 file (GLOB CPP_FILES *.cpp)
 file (GLOB H_FILES *.h)
-set (SOURCE_FILES ${CPP_FILES} ${H_FILES})
-set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${SOURCE_FILES} PARENT_SCOPE)
+set (ENGINE_SOURCE_FILES ${ENGINE_SOURCE_FILES} ${CPP_FILES} ${H_FILES} PARENT_SCOPE)
 
 # Define dependency libs
 set (ENGINE_LIBS ${ENGINE_LIBS} ../ThirdParty/FreeType/include PARENT_SCOPE)