cmake: allow static PIC builds with new optional WICKED_PIC_CODE (#1010)

CMakeLists.txt

@@ -12,6 +12,7 @@ endif()
 set(WICKED_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 
 option(WICKED_DYNAMIC_LIBRARY "Build WickedEngine as a dynamic library" OFF)
+option(WICKED_PIC "Build WickedEngine as position-independent code" WICKED_DYNAMIC_LIBRARY)
 option(USE_LIBCXX "Link WickedEngine to llvm libc++ library - only available with the Clang compiler" OFF)
 
 option(WICKED_EDITOR "Build WickedEngine editor" ON)
@@ -30,6 +31,7 @@ endif()
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_POSITION_INDEPENDENT_CODE WICKED_PIC)
 
 # Use solution folders to organize projects
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
@@ -50,7 +52,7 @@ endif()
 
 if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fdeclspec -fms-extensions")
-	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} $<$<NOT:$<WICKED_DYNAMIC_LIBRARY>>:--for-linker=-no-pie>" )
+	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} $<$<NOT:$<WICKED_PIC>>:--for-linker=-no-pie>" )
 	if (USE_LIBCXX)
 		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
 		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++ -lc++abi")

Samples/Tests/CMakeLists.txt

@@ -50,6 +50,6 @@ add_custom_command(
 	# Copy font test resources
 	COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/yumin.ttf ${CMAKE_CURRENT_BINARY_DIR}/
 
-	COMMENT Copying Tests resources
+	COMMENT "Copying Tests resources"
 	VERBATIM
 )

WickedEngine/CMakeLists.txt

@@ -55,6 +55,9 @@ add_subdirectory(Utility)
 add_compile_definitions(JPH_DEBUG_RENDERER=1)
 set(PHYSICS_REPO_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
 include(${PHYSICS_REPO_ROOT}/Jolt/Jolt.cmake)
+set_target_properties(Jolt PROPERTIES
+	POSITION_INDEPENDENT_CODE ${WICKED_PIC}
+)
 
 file(GLOB HEADER_FILES CONFIGURE_DEPENDS *.h)
 
@@ -71,7 +74,10 @@ if(MSVC)
 endif()
 
 add_library(WickedEngine ALIAS ${TARGET_NAME})
-set_target_properties(${TARGET_NAME} PROPERTIES PUBLIC_HEADER "${HEADER_FILES}")
+set_target_properties(${TARGET_NAME} PROPERTIES
+	PUBLIC_HEADER "${HEADER_FILES}"
+	POSITION_INDEPENDENT_CODE ${WICKED_PIC}
+)
 
 target_include_directories(${TARGET_NAME} SYSTEM PUBLIC
 	$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
@@ -83,6 +89,9 @@ set(WICKEDENGINE_STATIC_LIBRARIES
 	LUA
 	Utility
 )
+set_target_properties(FAudio PROPERTIES
+	POSITION_INDEPENDENT_CODE ${WICKED_PIC}
+)
 
 if (WIN32)
 	target_compile_definitions(${TARGET_NAME} PUBLIC

WickedEngine/LUA/CMakeLists.txt

@@ -13,7 +13,7 @@ endif()
 
 set_target_properties(LUA PROPERTIES
 	FOLDER "ThirdParty"
-	POSITION_INDEPENDENT_CODE ${WICKED_DYNAMIC_LIBRARY}
+	POSITION_INDEPENDENT_CODE ${WICKED_PIC}
 )
 
 install(FILES ${LUA_HEADERS}

WickedEngine/Utility/CMakeLists.txt

@@ -55,5 +55,5 @@ add_library(Utility STATIC
 
 set_target_properties("Utility" PROPERTIES
 	FOLDER "ThirdParty"
-	POSITION_INDEPENDENT_CODE ${WICKED_DYNAMIC_LIBRARY}
+	POSITION_INDEPENDENT_CODE ${WICKED_PIC}
 )

WickedEngine/Utility/FAudio/CMakeLists.txt

@@ -90,7 +90,6 @@ set_target_properties(FAudio PROPERTIES
 	OUTPUT_NAME "FAudio"
 	VERSION ${LIB_VERSION}
 	SOVERSION ${LIB_MAJOR_VERSION}
-	POSITION_INDEPENDENT_CODE ${WICKED_DYNAMIC_LIBRARY}
 )
 
 # SDL2 Dependency